EP4258935B1 - Harnais ayant un mécanisme à dégagement rapide - Google Patents

Harnais ayant un mécanisme à dégagement rapide

Info

Publication number
EP4258935B1
EP4258935B1 EP21902803.2A EP21902803A EP4258935B1 EP 4258935 B1 EP4258935 B1 EP 4258935B1 EP 21902803 A EP21902803 A EP 21902803A EP 4258935 B1 EP4258935 B1 EP 4258935B1
Authority
EP
European Patent Office
Prior art keywords
carriage
elongate
lugs
pair
backframe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21902803.2A
Other languages
German (de)
English (en)
Other versions
EP4258935A1 (fr
EP4258935A4 (fr
Inventor
Barry S. LEWIN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
Original Assignee
3M Innovative Properties Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of EP4258935A1 publication Critical patent/EP4258935A1/fr
Publication of EP4258935A4 publication Critical patent/EP4258935A4/fr
Application granted granted Critical
Publication of EP4258935B1 publication Critical patent/EP4258935B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/14—Carrying-straps; Pack-carrying harnesses
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/04—Sacks or packs carried on the body by means of two straps passing over the two shoulders
    • A45F3/08—Carrying-frames; Frames combined with sacks
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/10—Pack-frames carried on the body
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/04—Couplings; Supporting frames
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/04—Sacks or packs carried on the body by means of two straps passing over the two shoulders
    • A45F2003/045—Sacks or packs carried on the body by means of two straps passing over the two shoulders and one additional strap around the waist
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F3/14—Carrying-straps; Pack-carrying harnesses
    • A45F2003/146—Pack-carrying harnesses
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B25/00—Devices for storing or holding or carrying respiratory or breathing apparatus

Definitions

  • Harnesses have found varied uses, e.g., for supporting equipment such as air tanks and the like, for fall protection, and so on.
  • US 2011/0048421 Al describes a carrying system for use with breathing apparatus, said carrying system comprising a backplate and a plurality of straps adapted to hold the backplate on the back of a user when the carrying system is worn, the backplate comprising at least one plate of a plastics material, the at least one plate having a predetermined shape and the at least one plate being adapted to provide impact protection to a user during use by at least partially absorbing and/or dispersing impact forces, and to deform resiliency in response to external forces imposed by bending and/or twisting of a user during use and return substantially to its predetermined shape when not subjected to an external force.
  • US 2017/0105509 Al describes an adjustable device for supporting a load, the device comprising: a belt for fastening about a waist of a user; a rod including two rigid elements, one of the elements being longitudinally slidable relative to the other element so as to adjust a length of the rod, the two rigid elements including a male telescoping element and a female telescoping element, the rod further including a locking mechanism that is operable to prevent sliding of the slidable element so as to fix the length of the rod, the locking mechanism including a component that is extendible outward from the male telescoping element to engage a component on the female element to lock the locking mechanism, a lower end of the rod being attachable to the belt and an upper section of the rod being attachable to a shoulder harness that is placeable on the user's shoulders for carrying the load; and a control that is operable by the user when carrying the load to unlock the locking mechanism, such that when the control is operated concurrently with movement of the user's shoulders relative to the user's waist,
  • the present invention provides a harness for use by a human user comprising a backframe and a strap that is removably connected to the backframe by a connection comprising an elongate guide that is borne by the backframe and a carriage that is borne by the strap.
  • the elongate guide comprises a positioning plate that defines an elongate positioning slot that comprises at least first and second pairs of positioning notches that are spaced along the long axis of the elongate positioning slot.
  • the elongate guide further comprises a retaining plate that forwardly overlies the positioning plate and that defines an elongate retaining slot that forwardly overlies, and is aligned with, the elongate positioning slot of the positioning plate, wherein the elongate retaining slot of the retaining plate comprises at least one pair of removal notches that are located, along the long axis of the elongate guide, between the first and second pairs of positioning notches of the positioning plate, wherein the pair of removal notches takes the form of two removal notches that are in opposed relation to each other across a vertical centerline of the elongate guide; wherein each of the first and second pairs of positioning notches takes the form of two positioning notches that are in opposed relation to each other across a vertical centerline of the elongate guide; and, wherein each pair of positioning notches comprises a transverse width that is greater than a transverse width of the at least one pair of removal notches.
  • the carriage comprises a pair of lugs that, when the carriage is in place on the elongate guide, are seated on transversely-inward edges of the retaining plate that define the transversely-outward boundaries of the elongate retaining slot, the lugs being slidably movable along the retaining plate so that the carriage is movable along a long axis of the elongate guide, and being actuatable back and forth relative to each other in a direction transverse to the long axis of the elongate guide and of the elongate retaining slot.
  • the present invention provides a method of manipulating a strap of a harness relative to a backframe of the harness as set out in claim 12.
  • the lumber and dorsal regions of the torso forward will indicate a direction generally toward the torso of the human user; rearward will indicate a direction generally away from the torso. (Such directions may be occasionally be referred to respectively as inward and outward directions.)
  • the vertical axis (v), the transverse axis (t), and/or the forward-rearward axis (f-r) are denoted for purposes of illustration. It will be understood that such terminology is used for convenience of description; such descriptions still apply when the harness is not being warn, noting that the harness may be manipulated (e.g. a waist strap may be disconnected from a backframe of the harness) while the harness is not being worn.
  • harness 1 configured to be worn by a human user; the harness comprising a backframe and a strap that is removably connected to the backframe by a connection comprising an elongate guide that is borne by the backframe and a carriage that is borne by the strap.
  • harness 1 is configured to support the weight of one or more cylinders 8 containing breathable gases (often referred to herein as "air tanks"), so that the harness may function as part of a so-called self-contained breathing apparatus (SCBA).
  • SCBA self-contained breathing apparatus
  • An exemplary harness will be described herein in the particular context of use in an SCBA. However, as discussed later herein, the arrangements disclosed herein may be used with harnesses of any other type, for other purposes.
  • a harness may be configured for use in an SCBA.
  • a harness 1 comprises a backframe 40 on which at least one air cylinder 8 may be mounted, and may comprise a pair of shoulder straps 7 which are attached at their upper ends to backframe 40, and a waist strap 10 that is attached to a lower region 45 of backframe 40.
  • Waist strap 10 extends away from backframe 40 in transversely opposing directions and, if desired, can be attached or otherwise connected to the lower ends of shoulder straps 7.
  • the harness is worn by positioning backframe 40 adjacently rearward of the wearer's back with the forward side 42 of the backframe facing toward the wearer and with the rearward side 44 of the backframe 40 facing away from the wearer.
  • the waist strap 10 is generally aligned with the wearer's lumbar, waist and/or hip regions and encircles the wearer's torso with the two free ends of the waist strap engaging with each other at the front of the wearer whilst the shoulder straps 7 are positioned over the wearer's shoulders.
  • the two ends of the waist strap 10 may be engaged to each other by tying or by using any conventional belt-type connector, buckle or latch, and so on.
  • the harness may be configured with items that allow the one or more air tanks to be securely attached to the harness.
  • An SCBA of which the harness is a part may further include a facemask (whether a full-face mask, a partial mask, or a helmet), and one or more of hoses, regulators, valves, and so on, that are configured to transport the breathing air from the air tank to the facemask (e.g. to a facepiece within the facemask).
  • the harness, and in particular the backframe may comprises various components, fittings, and so on, that will support such items and facilitate their function.
  • Backframe 40 of harness 1 may take any suitable form in which it is configured to reside rearward of, and adjacent to, the back of the wearer of the harness.
  • the backframe may take the form of a single, integral piece, e.g. that is molded from a suitable injection-moldable organic polymeric material.
  • the backframe may take the form of an assembly of separately-made pieces. (Even if the backframe itself is a single, integral piece, various ancillary items may be attached or otherwise connected to it.)
  • the backframe 40 comprises a main body 41 that takes the general form of a vertically elongate entity with an upper end portion 46 and a lower end portion 45, and which may have a length approximately equal to, or somewhat greater than or less than, the length of a conventional air cylinder.
  • the backframe is generally platelike with a forward side 42 and with a rearward side 44, and with a forward-rearward local thickness that is typically much less than the transverse width and the vertical height of the backframe.
  • backframe 40 may be somewhat contoured (as evident in various Figures herein) such that the plate approximately follows the curvature and contours of a human back in at least one and optionally two dimensions. Thus, all points on either the outer or inner surfaces of the backframe do not necessarily lie in a common plane.
  • Backframe 40 may be formed of a material (e.g. an injection-molded organic polymeric material) which is strong and lightweight.
  • backframe 40 e.g., main body 41 thereof
  • the backframe may comprise one or more layers of resilient padding (not shown in any Figure herein) between at least a portion of the backframe and a portion of the wearer's back. Such padding may take the form of multiple separate pads, a single relatively large pad, and so on.
  • backframe 40 and/or any padding that is present may be covered in a high temperature resistant and/or flame retardant material (e.g. aramid fabrics such as those available under the trade designation KEVLAR and NOMEX, cellulosic fabrics such as those available under the trade designation PROBAN, or the like).
  • a high temperature resistant and/or flame retardant material e.g. aramid fabrics such as those available under the trade designation KEVLAR and NOMEX, cellulosic fabrics such as those available under the trade designation PROBAN, or the like.
  • Such padding e.g. similarly covered by high temperature resistant material
  • the straps and/or padding may themselves be made of high-temperature resistant and/or flame-retardant materials, rather than being merely covered by such materials.
  • Various fabric-based items may be separable from major non-fabric components of the harness (in particular the backframe), e.g. in order to separate machine-washable components (e.g. fabric-containing items such as straps, padding, and the like) from non-machine-washable items (e.g. the backframe itself, the air cylinder(s), hoses, regulators, and so on) for cleaning.
  • machine-washable components e.g. fabric-containing items such as straps, padding, and the like
  • non-machine-washable items e.g. the backframe itself, the air cylinder(s), hoses, regulators, and so on
  • harness 1 when harness 1 is present as part of an SCBA, harness 1 may comprise various fittings, engaging members, fasteners, and so on, to enable this functioning.
  • the SCBA as a whole will comprise one or more air cylinders, a facemask, and one or more of regulators, hoses, and so on, as will be well understood by those in the field.
  • the harness and/or the SCBA may further comprise items such as one or more guards, cradles, tensioning straps, and so on. Various such items and their function are described in detail in U.S. Patent 10137319 .
  • Exemplary harness 1 as depicted in the Figures herein comprises a waist strap 10.
  • waist strap 10 is attached to the forward side 42 of backframe 40 and forwardly overlies a portion of lower end 45 of backframe 40.
  • At least the inward (body-facing) side 13 of waist strap 10 may be equipped with padding 11 at various points along the elongate extent of the waist strap; in particular, a lumbar pad 12 may be present as evident in Fig. 2 .
  • waist strap 10 e.g. padding 11 thereof
  • Waist strap 10 is removably connected to backframe 40 by a manually disconnectable connection 5.
  • waist strap 10 can be disconnected from backframe 40 (so that the waist strap can be cleaned, e.g. by machine-washing, separately from the backframe) manually (by hand), without necessitating the use of any special tools (e.g. pliers, a screwdriver, etc.).
  • Waist strap 10 is shown having been disconnected from backframe 40, in Figs. 4 and 5 .
  • the herein-disclosed arrangements allow the manual disconnection of waist strap 10 from backframe 40 to be accomplished quickly and easily.
  • the herein-disclosed connection between waist strap 10 and backframe 40 allows waist strap 10 to be moved vertically up and down relative to backframe 40. This can allow the harness to be adjusted in view of the height and/or preferences of a particular user of the harness.
  • the connection between waist strap 10 and backframe 40 include a rotatable connection 6 that allows waist strap 10 to be rotated relative to backframe 40.
  • connection 5 between backframe 40 and waist strap 10, which connection relies on an elongate guide 50 that is borne by backframe 40, and a carriage 20 that is borne by waist strap 10.
  • Elongate guide 50 is depicted in exemplary embodiment in Fig. 4 and in magnified isolated view in Fig. 6 .
  • Elongate guide 50 comprises a long axis that is aligned with the vertical axis of backframe 40 and harness 1, and has upper and lower ends 51 and 52.
  • Elongate guide 50 comprises a vertically-aligned elongate slot 53 that is configured to accept one or more lugs 26 of a carriage 20 thereinto. Carriage 20 is visible in Figs.
  • lugs 26 of carriage 20 are visible in the magnified isolated view of Fig. 10 .
  • lugs 26 of carriage 20 reside at least partially within elongate slot 53 of elongate guide 50 and can be slidably moved back and forth along at least a portion of the length of elongate slot 53.
  • lugs 26 are configured so that they are biased transversely-outwardly, as can be accomplished by the use of one or more biasing members 24 (e.g. springs), not visible in any Figure but indicated generally in Fig. 9 .
  • Lugs 26 can be actuated (moved) transversely inward toward each other (as indicated by arrows 27 of Fig. 10 ), overcoming the biasing force, by squeezing handles 22 toward each other in the manner indicated by arrows 23 of Fig. 9 .
  • carriage 20 With lugs 26 having been actuated transversely inward toward each other, carriage 20 can be slidably moved vertically back and forth along elongate guide 50 as desired.
  • carriage 20 When carriage 20 is moved to a location at which lugs 26 are aligned with any of several pairs of notches that are provided in elongate guide 50, various operations can be performed as discussed below.
  • These arrangements enable the waist strap to be moved up and down to specific locations along the vertical axis of the backframe, and then held at the desired location. These arrangements also allow the waist strap to be quickly and easily disconnected from the backframe when desired.
  • An elongate guide 50 as described above comprises a retaining plate 60 and a positioning plate 80 and is correspondingly, favorably provided by the combination of the retaining and positioning plates.
  • plates 60 and 80 may be provided as an aligned stack 54 that is attached to backframe 40, as evident from Figs. 6 and 7 .
  • Retaining plate 60 comprises an elongate retaining slot 63;
  • positioning plate 80 comprises an elongate positioning slot 83;
  • retaining plate 60 forwardly overlies positioning plate 80 so that slots 63 and 83 are aligned with each other, and overlap each other, so as to collectively provide the above-mentioned elongate slot 53 of elongate guide 50.
  • Retaining plate 60 comprises at least one pair of removal notches 66.
  • the pair of notches numbered 66 is a lower pair; there is also an upper pair of removal notches, unnumbered, that is visible in Figs. 6-9 .
  • a pair of removal notches takes the form of two removal notches that are in opposed relation to each other across a vertical centerline of the elongate guide, so as to provide a locally-transversely-widened area of elongate retaining slot 63, as evident e.g. in Fig. 8 .
  • the lugs 26 are no longer seated on the edges of retention plate 60, and carriage 20 is no longer constrained to only moving by sliding along the long axis of elongate guide 50.
  • carriage 20 With carriage 20 having been positioned so that lugs 26 are aligned with a pair of removal notches 66 of retaining plate 60, and with lugs 26 having been actuated transversely-inward, carriage 20 can be moved forwardly, away from elongate guide 50.
  • This operation causes carriage 20 to be removed from elongate guide 50 and thus causes waist strap 10 to be disconnected from, and removed from, backframe 40, e.g. to the position shown in Figs. 4 and 5 .
  • This quick-release arrangement allows waist strap 10 to be manually removed from backframe 40 quickly and easily, without the use of any special tools.
  • the elongate retaining slot 63 of retaining plate 60, and the pair of lugs 26 of carriage 20, can be configured so that when carriage 20 is positioned so that lugs 26 are at a location along the long axis of elongate retaining slot 63 at which a pair of removal notches is not present, lugs 26 are not able to pass between transversely-inward edges 64 of portions of retaining plate 60 that define elongate retaining slot 63, regardless of whether or not lugs 26 are actuated transversely inwards towards each other.
  • carriage 20 will remain connected to elongate guide 50 even as carriage 20 is slidably moved back and forth along elongate guide 50, unless carriage 20 is moved to a specific location comprising a pair of removal notches and lugs 26 are actuated transversely inwards to allow the disconnection of carriage 20 from elongate guide 50.
  • This can allow the position of the waist strap relative to the backframe to be chosen and maintained as desired, e.g. depending on the height and/or preferences of the wearer of the harness. That is, according to the arrangements herein, a waist strap 10 can be attached to a backframe 40 in a manner which permits the waist strap to be selectively positioned in one of several different predetermined vertical locations relative to the backframe.
  • elongate guide 50 comprises a positioning plate 80 in addition to the above-described retaining plate 60.
  • positioning plate 80 rearwardly underlies retaining plate 60 in the manner described above.
  • Positioning plate 80 comprises an upper end 81 and a lower end 82 and defines an elongate positioning slot 83, by way of transversely-inward edges 84 of plate 80 that define transversely-outward boundaries 85 of slot 83.
  • elongate positioning slot 83 of positioning plate 80 and elongate retaining slot 63 of retaining plate 60 do not share the exact same boundaries, they are aligned with each other along the vertical axis of backframe 40 and overlap to such an extent to collectively provide the above-discussed elongate slot 53 of elongate guide 50.
  • Elongate positioning slot 83 as defined by positioning plate 80 comprises at least first and second pairs of positioning notches that are spaced along the long axis of elongate positioning slot 83.
  • three pairs of positioning notches are present: a lower pair 86, a middle pair 87, and an upper pair 88.
  • Each pair of positioning notches takes the form of two positioning notches that are in opposed relation to each other across a vertical centerline of the elongate guide so as to provide a locally-transversely-widened area of elongate positioning slot 63, as evident e.g. in Fig. 8 .
  • each pair of positioning notches comprises a transverse width that is greater than a transverse width of the at least one pair of removal notches.
  • the elongate positioning slot 83 of positioning plate 80, and the pair of lugs 26 of carriage 20, are configured so that when carriage 20 is positioned so that lugs 26 are at a location along the long axis of elongate positioning slot 83 at which a pair (e.g.. pair 86) of positioning notches are present, lugs 26 are able to move transversely outward (under a transversely-outward biasing force provided by one or more biasing members of the carriage) so that portions of lugs 26 enter the respective positioning notches 86.
  • portions of the lugs e.g. portions 29 as visible in Fig. 11
  • the presence of these portions of the lugs in the positioning notches will prevent slidable movement of carriage 20 along the long axis of elongate guide 50 and thus will hold carriage 20 at that position along elongate guide 50. This will thus maintain waist strap 10 at a specific vertical location along backframe 40.
  • lugs 26 can be actuated (by squeezing handles 22) to move the lugs transversely inward toward each other, to the point that portions 29 of lugs 26 no longer reside in the positioning notches and do not prevent slidable movement of carriage 20 along the long axis of elongate guide 50.
  • Carriage 20 can then be slidably moved along the long axis of elongate guide 50, e.g. to one of the other pairs of positioning notches.
  • the actuation of lugs 26 can then be discontinued and the lugs will, under the biasing force, become seated in this new pair of positioning notches and will hold the carriage at that position.
  • FIGs. 6-8 depict an optional arrangement in which positioning plate 80 comprises a rearward "floor" 95 (denoted in Fig. 8 ). This floor can enhance the strength, and in particular the torsional rigidity, of positioning plate 80.
  • FIGs also depict an optional arrangement in which positioning plate 80 comprises a central, vertically-oriented elongate rib 92.
  • Such a central rib may enhance the strength of positioning plate 80 and/or it may cooperate with features of carriage 20 to maintain the alignment of carriage 20, as discussed later herein.
  • Such a rib 92 will subdivide the above-described elongate positioning slot 83 into left and right sub-slots 93 and 94, as denoted in Figs. 7 and 8 . However, notwithstanding the presence of such a rib, the thus-formed sub-slots will still be considered to collectively form an elongate positioning slot that comprises pairs of positioning notches as discussed above.
  • any pair of removal notches that is present will be spaced (along the long axis of elongate guide 50) between pairs of positioning notches.
  • lower pair of removal notches 66 is located between lowest pair of positioning notches 86 and middle pair of positioning notches 87.
  • the upper pair of removal notches (unnumbered, but easily visible in Fig. 8 ) is located between middle pair of positioning notches 87 and upper pair of positioning notches 88.
  • This spatial separation of the removal notches from the positioning notches provides that there is no overlap between such notches, which ensures that carriage 20 will not become disconnected from elongate guide 50 when carriage 20 is "parked” at any of the positioning notch pairs 86, 87, or 88.
  • This can be achieved by configuring the positioning plate and the retaining plate so that each positioning notch is forwardly overlaid by a portion of the retaining plate (as evident in Fig. 8 ), so that the lugs cannot be forwardly removed from the positioning notches.
  • carriage 20 when carriage 20 is being slidably moved from one pair of positioning notches to another pair of positioning notches, it will be merely needed to maintain rearward pressure on the carriage as the carriage passes by a pair of removal notches, to provide that carriage 20 does not become disconnected from elongate guide 50 as it passes by the pair of removal notches.
  • an elongate guide 50 of the general type described above is favorably provided by the combination of a retaining plate 60 and a positioning plate 80.
  • Such plates can form a stack 54 which is attached to backframe 40 as illustrated in Fig. 7 .
  • attachment can be by way of any suitable mechanical fastener(s) such as e.g. screws, nuts, bolts, rivets, clamps, or the like.
  • such attachment may be by way of ultrasonic bonding, adhesive bonding, solvent welding, and so on.
  • Many such methods of attachment fall under the general category of "securing" the stack to backframe 40, by which is meant that the stack is attached to backframe 40 in such a way that neither plate 60 nor plate 80 can be removed manually (i.e. by the fingers of a user) from backframe 40, but rather are non-removable or can only be removed by the use of at least one tool such as e.g. a screwdriver or pliers.
  • plates 60 and/or 80, and stack 54 that is collectively formed by plates 60 and 80 may be slightly curved e.g. to approximately follow the contour of the user's lumbar region.
  • elongate slot 63 of plate 60, elongate slot 83 of plate 80, and elongate slot 53 collectively formed therefrom may exhibit an arcuate shape. Any such curvature should be sufficiently gradual that it does not interfere with the ability to slidably move carriage 20 along elongate guide 50.
  • any or all of these components may exhibit an average radius of curvature (when viewed along the transverse axis of the backframe) of at least 6, 10 or 14 cm. In further embodiments, such a radius of curvature may be at most 30, 25, or 20 cm. The radius of curvature may be relatively constant along the elongate length of the item; or it may vary along this length.
  • retaining plate 60 may be made of a suitably stiff material, e.g. a metal such as stainless steel.
  • Positioning plate 80 may be made of any appropriate material, e.g. an organic polymeric material such as polyamide reinforced with glass or carbon fibers.
  • the stack may be configured so that forward major surface 69 of retaining plate 60 will face forwardly (toward waist strap 10), a portion of rearward major surface 71 of retaining plate 60 will be in contact with a portion of forward major surface 89 of positioning plate 80, and a portion of rearward major surface 91 of positioning plate 80 will be in contact with a portion of forward major surface 43 of the main body of the backframe, all as illustrated in Fig. 7 .
  • Retaining plate 60 and positioning plate 80 will be configured so that the long axis of elongate retaining slot 63 of retaining plate 60, the long axis of elongate positioning slot 83 of positioning plate 80, and the long axis of elongate slot 53 collectively formed by slots 63 and 83, will be aligned with the vertical axis of the backframe and of the harness.
  • the necessary features may be molded directly into backframe 40 itself. Such an arrangement will still be considered to provide an elongate guide 50 of the type disclosed herein.
  • Carriage 20 is attached to waist strap 10 and can be connected to elongate guide 50 so that waist strap 10 is connected to backframe 40.
  • Carriage 20 comprises a forward side 21 that faces toward the body of the user of the harness, and a rearward side 25 that faces away from the body, toward backframe 40.
  • Forward side 21 of carriage 20 comprises a pair of lugs 26 that each comprise a channel 28 (most easily seen in Fig. 11 ) that can be used to seat the lug onto an edge 64 of the above-described retaining plate 60.
  • Lugs 26 are transversely-outwardly biased; rearward side 25 of carriage 20 comprises a pair of handles 22 that are movable (slidably movable, toward each other, in the depicted design) to actuate lugs 26 transversely inward in the manner described earlier herein.
  • the forward side 21 of carriage 20 may also comprise a pair of flanges 32. These flanges may establish a space therebetween within which the previously-described central rib 92 of positioning plate 80 may reside. As carriage 20 is moved along elongate guide 50, flanges 32 can slidably move along rib 92 while keeping rib 92 in place between flanges 32. This can help ensure that carriage 20 is maintained in proper alignment with the above-described elongate slots.
  • the width (in the forward-rearward direction, as seen in Fig. 11 ) of channels 28 of lugs 26 may be chosen in view of the thickness of edges 64 of retaining plate 60. That is, these dimensions may be chosen to provide that channels 28 of lugs 26 can be easily seated onto edges 64 of retaining plate 60 when carriage 20 is being installed onto elongate guide 50, but to ensure a relatively tight fit so that there is little "play" in the system.
  • the thickness of edges 64 of retaining plate 60 may be at least 60, 70 or 80 % of the width of channels 28. In further embodiments, the thickness of edges 64 of retaining plate 60 may be at most 95, 90, 85, 80, or 75 % of the width of channels 28.
  • the depth (in the transverse direction, as seen in Fig. 11 ) of channels 28 of lugs 26, along with the amount of transverse travel that the lugs are allowed, can be chosen in view of the transverse dimensions of elongate retaining slot 63 and/or of elongate positioning slot 83.
  • this lug-channel depth and lug-travel distance can be chosen to ensure that two conditions are met. The first condition is that the lugs will remain seated on edges 64 of retaining plate 60, unless and until the carriage is aligned with a pair of removal notches 66 and the lugs are actuated transversely inward so that the lugs become unseated from edges 64. The second condition is that, upon the carriage being aligned with a pair of positioning notches, the lugs will be able to move transversely outward into the positioning notches a sufficient distance that the lugs are adequately seated in the positioning notches.
  • waist strap 10 may be rotatably connected to carriage 20 so that strap 10 is rotatable relative to carriage 20 and thus to backframe 40 and harness 1. Any such rotation will be about an axis of rotation that is at least generally aligned with a forward-rearward axis of the harness and backframe. This rotation does not require actuation of the carriage; rather, the waist strap is capable of automatically undergoing this rotation while the harness is worn, in response to forces exerted on the strap.
  • This rotation of the waist strap relative to the backframe can be useful to accommodate sideways and/or torsional movement of the harness as the wearer e.g. leans, bends, squats, etc., in the course of performing activities while wearing the harness.
  • this freedom of rotation can be achieved by equipping waist strap 10 with an annular ring 16 as seen e.g. in Figs. 4 and 5 .
  • Annular ring 16 can be fixedly (non-rotatably) attached to strap 10 and can be rotatably mounted on the outer perimeter of carriage 20, so that annular ring 16, and thus strap 10, can rotate relative to carriage 20.
  • annular ring 16 can be installed in an opening 14 of strap 10 that is provided for the purpose of accommodating ring 16 and carriage 20. Opening 14 of strap 10 can be bounded by an annular flange (e.g.
  • annular ring 16 (and locking ring 33) are not a part of carriage 20; rather, they are items that are rotatably connected to carriage 20. However, these items are shown in Figs. 9-11 along with carriage 20, for ease of depiction.
  • such rotation of annular ring 16 (and thus strap 10) relative to carriage 20 may be limited, e.g. to an arc of rotation of plus or minus 20, 30, 40 or 50 degrees from vertical, rather than unlimited rotation being allowed.
  • the extent of such rotation can be restricted by, for example, providing an arcuate cut-out 17 in annular ring 16, as seen most easily in Fig. 10 .
  • the limit of rotation of annular ring 16 relative to carriage 20 can be established by way of a terminal end 18 of arcuate cut-out 17 impinging on a stop feature 31 of carriage 20, again as seen most easily in Fig. 10 .
  • carriage 20 may not be disconnectable from annular ring 16.
  • carriage may be washed (e.g. in a washing machine) along with strap 10.
  • carriage may be made of materials that are chosen to be compatible with machine-washing processes.
  • annular ring 16 can be installed in a transversely-central location of strap 10, as evident in Figs. 4 and 5 , thus establishing the location at which carriage 20 will be present.
  • the forward side 21 of carriage 20 may be approximately even with, or slightly recessed rearward relative to, the forward surface of the padding of strap 10.
  • the lumbar area of waist strap 10 may comprise a lumbar pad 12 that is rather thick, thus providing extra room for carriage 20 to be recessed into.) Mounting the carriage in a recess in this manner may minimize any chance of the carriage contacting the body of the wearer in a manner that might cause discomfort, while still allowing the carriage to be brought into contact with the above-described retaining plate so that the carriage can be connected to the retaining plate.
  • padding may be provided that forwardly overlies the forward side 21 of carriage 20 to likewise enhance the comfort of the wearer. Such padding may be configured so that it is removable from the waist strap when the carriage is to be manipulated, and can then be reinstalled on the waist strap afterwards. In some embodiments, such padding may remain attached to the waist strap, but may be able to be temporarily moved to a position in which it does not obstruct access to the carriage.
  • a connection as disclosed herein may be used to connect some other strap (e.g. a shoulder strap, chest strap, or leg strap) to a backframe, or to some other rigid component of a harness.
  • these arrangements are not limited to harnesses for supporting an air tank.
  • a harness may be a fall-protection harness.
  • Such a harness is used to support the body of the user e.g. in the event of a fall.
  • a fall-protection harness may comprise a dorsal plate which may correspond approximately to the herein-described backframe.
  • the arrangements disclosed herein may be used to connect a strap to a dorsal plate (or some other rigid component) of a fall-protection harness.
  • Exemplary fall-protection harnesses are described e.g. in U.S. Patents 8959664 and 10137322 , and in U.S. Provisional Patent Application 62/793163 and in the resulting PCT application published as WO 2020/148655 .

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Supports For Pipes And Cables (AREA)
  • Basic Packing Technique (AREA)

Claims (13)

  1. Harnais (1) pour utilisation par un utilisateur humain, comprenant :
    un châssis dorsal (40) et une sangle (10) qui est reliée de manière amovible au châssis dorsal par une liaison (5) comprenant un guide allongé (50) qui est porté par le châssis dorsal et un support mobile (20) qui est porté par la sangle (10),
    dans lequel le guide allongé comprend une plaque de positionnement (80) qui définit une fente de positionnement allongée (83) qui comprend au moins des première et seconde paires d'encoches de positionnement (86, 87, 88) qui sont espacées le long de l'axe long de la fente de positionnement allongée,
    dans lequel le guide allongé comprend en outre une plaque de retenue (60) qui recouvre vers l'avant la plaque de positionnement et qui définit une fente de retenue allongée (63) qui recouvre vers l'avant, et est alignée avec, la fente de positionnement allongée de la plaque de positionnement,
    dans lequel la fente de retenue allongée de la plaque de retenue comprend une paire d'encoches de retrait (66) qui sont localisées, le long de l'axe long du guide allongé, entre les première et seconde paires d'encoches de positionnement de la plaque de positionnement ;
    et,
    dans lequel le support mobile comprend une paire d'ergots (26) qui, lorsque le support mobile est en place sur le guide allongé, sont logés sur des bords transversalement vers l'intérieur (67) de la plaque de retenue qui définissent les limites transversalement vers l'extérieur (68) de la fente de retenue allongée, les ergots pouvant être déplacés de manière coulissante le long de la plaque de retenue de sorte que le support mobile peut être déplacé le long d'un axe long du guide allongé, et étant actionnables vers l'arrière et vers l'avant l'un par rapport à l'autre dans une direction transversale à l'axe long du guide allongé et de la fente de retenue allongée ; et
    dans lequel la paire d'encoches de retrait prend la forme de deux encoches de retrait qui sont en relation opposée l'une par rapport à l'autre à travers une ligne centrale verticale du guide allongé ; dans lequel chacune des première et seconde paires d'encoches de positionnement prend la forme de deux encoches de positionnement qui sont en relation opposée l'une par rapport à l'autre à travers une ligne centrale verticale du guide allongé ; et, dans lequel chaque paire d'encoches de positionnement comprend une largeur transversale qui est supérieure à une largeur transversale de l'au moins une paire d'encoches de retrait.
  2. Harnais (1) selon la revendication 1 dans lequel la paire d'ergots (26) est respectivement reliée à une paire de poignées (22) qui sont fonctionnelles de manière mobile pour actionner de manière coulissante les ergots vers l'arrière et vers l'avant dans la direction transversale à l'axe long du guide allongé (50).
  3. Harnais (1) selon la revendication 2 dans lequel chaque ergot de la paire d'ergots (26) comprend un canal (28) qui est conçu pour accepter un bord transversalement vers l'intérieur (67) de la plaque de retenue (60) dans celui-ci, de façon à monter la paire d'ergots sur les bords transversalement vers l'intérieur de la plaque de retenue.
  4. Harnais (1) selon la revendication 3 dans lequel la paire d'ergots (26) est sollicitée transversalement vers l'extérieur par un ou plusieurs éléments de sollicitation.
  5. Harnais (1) selon l'une quelconque des revendications 1 à 4 dans lequel la fente de retenue allongée (63) de la plaque de retenue (60), et la paire d'ergots (26) du support mobile (20), sont conçues de sorte que lorsque le support mobile est positionné au niveau d'une localisation le long de l'axe long de la fente de retenue allongée au niveau de laquelle la paire d'encoches de retrait (66) est présente et que les ergots sont actionnés transversalement vers l'intérieur l'un vers l'autre, les ergots sont délogés des bords transversalement vers l'intérieur (67) de parties de la plaque de retenue qui définissent les limites transversalement vers l'extérieur (68) des encoches de retrait de la fente de retenue allongée, et sont capables de passer entre ces bords transversalement vers l'intérieur de sorte que le support mobile peut être détaché du guide allongé (50) en étant déplacé vers l'avant, à l'écart du châssis dorsal (40).
  6. Harnais (1) selon la revendication 5 dans lequel la fente de retenue allongée (63) de la plaque de retenue (60), et la paire d'ergots (26) du support mobile (20), sont conçues de sorte que lorsque le support mobile est positionné de sorte que les ergots sont au niveau d'une localisation le long de l'axe long de la fente de retenue allongée au niveau de laquelle une paire d'encoches de retrait (66) n'est pas présente, les ergots ne sont pas capables de passer entre les bords transversalement vers l'intérieur (67) de parties de la plaque de retenue qui définissent la fente de retenue allongée pour détacher le support mobile du guide allongé (50), indépendamment du fait que les ergots sont ou non actionnés transversalement vers l'intérieur l'un vers l'autre.
  7. Harnais (1) selon l'une quelconque des revendications 1 à 4 dans lequel la fente de positionnement allongée (83) de la plaque de positionnement (80), et la paire d'ergots (26) du support mobile (20), sont conçues de sorte que lorsque le support mobile est positionné de sorte que les barrettes sont au niveau d'une localisation le long de l'axe long de la fente de positionnement allongée au niveau de laquelle une paire d'encoches de positionnement (86, 87, 88) sont présentes, et que les ergots sont autorisés à se déplacer transversalement vers l'extérieur sous une force de sollicitation transversalement vers l'extérieur, fournie par un ou plusieurs éléments de déviation du support mobile, des parties des ergots se trouvent dans les encoches de positionnement et maintiennent le support mobile au niveau de cette position le long de l'axe long du guide allongé (50).
  8. Harnais (19 selon l'une quelconque des revendications 1 à 4 dans lequel la plaque de retenue (60) et la plaque de positionnement (80) sont fournies en tant qu'empilement (54) qui est fixé à un corps principal (41) du châssis dorsal (40) avec une partie d'une surface principale à l'arrière (71) de la plaque de retenue étant en contact avec une partie d'une surface principale à l'avant (89) de la plaque de positionnement et avec une partie d'une surface principale à l'arrière (91) de la plaque de positionnement étant en contact avec une partie d'une surface principale à l'avant (43) du corps principal du châssis dorsal.
  9. Harnais (1) selon l'une quelconque des revendications 1 à 4 dans lequel la plaque de retenue (60) et la plaque de positionnement (0) sont conçues de sorte qu'un axe long de la fente de retenue allongée (63) de la plaque de retenue, un axe long de la fente de positionnement allongée (83) de la plaque de positionnement et un axe long d'une fente allongée (53) du guide allongé (50), formés collectivement par la plaque de retenue et la plaque de positionnement, sont tous alignés avec un axe vertical du châssis dorsal (40) et du harnais.
  10. Harnais (1) selon l'une quelconque des revendications 1 à 4 dans lequel le support mobile (20) qui est porté par la sangle (10) est relié de manière rotative à la sangle de sorte que la sangle peut effectuer une rotation par rapport au support mobile et donc au châssis dorsal (40) et au harnais, autour d'un axe de rotation qui est au moins généralement aligné avec un axe avant-arrière du harnais et du châssis dorsal.
  11. Harnais (1) selon l'une quelconque des revendications 1 à 4 dans lequel le guide allongé (50) du châssis dorsal (40), et le support mobile (20) de la sangle (10), sont conçus de sorte que lorsque les ergots (26) du support mobile sont actionnés transversalement vers l'intérieur, le support mobile peut être déplacé de manière coulissante le long de l'axe long du guide allongé à partir d'une première paire d'encoches de positionnement (86, 87, 88) vers une autre paire d'encoches de positionnement ; ou, peut être déplacé de manière coulissante le long de l'axe long du guide allongé à partir d'une première paire d'encoches de positionnement vers une paire d'encoches de retrait (66), localisation au niveau de laquelle le support mobile peut être déplacé vers l'avant par rapport au châssis dorsal pour détacher manuellement le support mobile et la sangle, du châssis dorsal.
  12. Procédé de manipulation d'une sangle (10) d'un harnais (1) par rapport à un châssis dorsal (40) du harnais, le procédé comprenant :
    l'actionnement d'une paire d'ergots (26) d'un support mobile (20) porté par la sangle de sorte que les barrettes se déplacent chacune transversalement vers l'intérieur de sorte que les barrettes ne sont plus logées dans une première paire d'encoches de positionnement (86, 87, 88) d'un guide allongé (50) du châssis dorsal, de sorte que le support mobile peut être déplacé de manière coulissante le long d'un axe long du guide allongé ;
    le déplacement coulissant du support mobile à une localisation souhaitée le long de l'axe long du guide allongé, la localisation souhaitée comprenant une paire d'encoches de retrait (66) du guide allongé ; et,
    le maintien de l'actionnement transversal vers l'intérieur des ergots du support mobile de sorte que les ergots du support mobile sont capables de passer entre des bords transversalement vers l'intérieur (67) de la paire d'encoches de retrait, et le déplacement du support mobile vers l'avant le long d'une direction avant-arrière du châssis dorsal et du harnais de façon à détacher le support mobile du guide allongé et retirer ainsi la sangle du châssis dorsal.
  13. Procédé selon la revendication 12 dans lequel le support mobile (20) est relié de manière rotative à la sangle (10), et dans lequel lorsque le support mobile est maintenu au niveau d'une localisation du guide allongé (50) avec la paire d'ergots (26) du support mobile logée dans une paire d'encoches de positionnement (86, 87, 88) du guide, la paire d'ergots doit être actionnée afin de déplacer de manière coulissante le support mobile le long de l'axe long du châssis dorsal (40) à l'écart de cette localisation ; et dans lequel en outre la liaison rotative du support mobile à la sangle permet à la sangle d'effectuer une rotation par rapport au support mobile et au châssis dorsal sans qu'aucun actionnement ne soit requis.
EP21902803.2A 2020-12-09 2021-11-22 Harnais ayant un mécanisme à dégagement rapide Active EP4258935B1 (fr)

Applications Claiming Priority (2)

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US202063123279P 2020-12-09 2020-12-09
PCT/IB2021/060828 WO2022123376A1 (fr) 2020-12-09 2021-11-22 Harnais ayant un mécanisme à dégagement rapide

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CN117547754A (zh) * 2022-08-04 2024-02-13 梅思安(苏州)安全设备研发有限公司 腰部调节系统
WO2025210687A1 (fr) * 2024-04-03 2025-10-09 Fasp Automotive Seats Srl Système de rétention d'un appareil respiratoire autonome

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AU2008304501A1 (en) * 2007-09-24 2009-04-02 The Coleman Company, Inc. Backpack suspension system
GB0806359D0 (en) 2008-04-08 2008-05-14 Scott Health & Safety Ltd Carrying system for breathing apparatus
US8959664B2 (en) 2009-02-09 2015-02-24 D B Industries, Llc Harness webbing protection system
WO2012129737A1 (fr) * 2011-04-01 2012-10-04 Shanghai Eagle Safety Equipment Ltd. Coussinet rotatif perfectionné de protection de la taille conçu pour des harnais d'appareil respiratoire autonome
IL226809B (en) 2013-06-06 2018-11-29 Jonathan Bar Or Adjustable device for carrying loads
US9220333B2 (en) * 2013-11-27 2015-12-29 Msa Technology, Llc Adjustable lumbar support for mounting on a backpack and backpack having the same
US10137322B2 (en) 2014-09-26 2018-11-27 D B Industries, Llc Safety harness
GB2606676A (en) * 2018-04-17 2022-11-16 Draeger Safety Uk Ltd Adjustable harness
CA3126214A1 (fr) 2019-01-16 2020-07-23 3M Innovative Properties Company Harnais de securite avec element de transfert de force dorsal rigide amovible

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EP4258935A1 (fr) 2023-10-18
EP4258935A4 (fr) 2024-11-06

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