WO2001094835A1 - Support tel qu'un treteau ou un escabeau - Google Patents
Support tel qu'un treteau ou un escabeau Download PDFInfo
- Publication number
- WO2001094835A1 WO2001094835A1 PCT/FR2001/001727 FR0101727W WO0194835A1 WO 2001094835 A1 WO2001094835 A1 WO 2001094835A1 FR 0101727 W FR0101727 W FR 0101727W WO 0194835 A1 WO0194835 A1 WO 0194835A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- foot
- upright
- pivoting
- screw
- legs
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/06—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby of trestle type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F5/00—Show stands, hangers, or shelves characterised by their constructional features
- A47F5/10—Adjustable or foldable or dismountable display stands
- A47F5/13—Adjustable or foldable or dismountable display stands made of tubes or wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/14—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top
- B25H1/16—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top in height
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/39—Ladders having platforms; Ladders changeable into platforms
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/42—Ladder feet; Supports therefor
- E06C7/44—Means for mounting ladders on uneven ground
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
- F16M11/046—Allowing translations adapted to upward-downward translation movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/242—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by spreading of the legs
Definitions
- the present invention relates to a support comprising at least two pivoting feet, these feet being able to pivot between a folding position and an unfolding position.
- This support can in particular be a trestle or a table with four pivoting legs, a trestle comprising, at one longitudinal end, one or two fixed legs and, at its other longitudinal end, two pivoting legs, or a stepladder comprising two fixed legs on one side and two swivel feet on another side.
- a support of this type must include folding legs so that it can be stored in a small footprint.
- a conventional trestle is thus formed by two frame-shaped structures, pivotally connected to each other at their upper parts, and which can be placed either in a close-up position, for folding, or in a separate position , unfolding.
- a trestle of this type has the disadvantage of being unstable when the surface on which the trestle is placed is not perfectly flat. This problem arises particularly for trestles for professional use such as those used on construction sites. In addition, a conventional trestle is not perfectly suited to receiving relatively heavy loads.
- Patent document GB-A-2,020,545 describes a tripod comprising a structure on which three feet are pivotally mounted; the structure has a vertical upright and each foot is bent at its upper part, above the zone by which it is connected to this upright, this elbow being such that the bent upper part of the foot comes to bear against said upright when the foot is unfolded.
- the tripod according to this document is not likely to be suitable for installation on an irregular surface or to receive relatively heavy loads.
- the present invention aims to remedy these drawbacks, therefore to provide a support which can be placed stably on an irregular surface while being able to receive relatively heavy loads.
- the support concerned comprises, in a manner known per se, a structure on which at least two feet are pivotally mounted; the structure has a vertical upright and each leg is bent at its part upper, above the zone by which it is connected to this upright, this elbow being such that the bent upper part of the foot comes to bear against said upright when the foot is unfolded.
- - at least one of the pivoting feet has a circular cross section at its upper bent part, and said upright of the structure has, on its face turned towards this upper bent part, a piece of cross section in shape "U", the intermediate wall of which is fixed to said face and the two side walls of which are placed at a distance from one another less than the diameter of said upper bent part; the assembly is shaped so that, in the unfolding position of the foot, said upper bent part abuts against said side walls of the "U" -shaped part, being wedged laterally with respect thereto; and - at least one other of the pivoting feet has, at its upper bent part, a screw perpendicular to the longitudinal axis of this upper bent part, this screw being clean, when it is screwed, to come into abutment against said amount and thus define a determined angular position of pivoting of the foot relative to this amount.
- the support according to the invention thus makes it possible to perfectly wedge the pivoting leg (s) mentioned first, in a maximum unfolding position, while the screw (s) of the other pivoting leg (s) allow this or these other pivoting leg (s) to be fixed in angular positions adapted to the irregularities of the surface of the ground on which the support is placed, in order to achieve perfect wedging of this support.
- the support according to the invention thus comprises:
- each lateral upright has a square cross section, and comprises at least one pair of legs fixed to it, which form a yoke receiving yoke, said U-shaped piece being fixed to the upright by its intermediate wall, between the legs.
- each "U" -shaped part are positioned relative to one another so that their outer faces come in close proximity to the inner faces of the legs of the corresponding pair of legs.
- each foot has a tubular structure.
- each foot fitted with a screw may have, at its upper part, a tapped bore which passes through it, receiving said screw.
- This screw can be a wing screw.
- each pivoting foot can have a pivoting sole at its lower end.
- Figure 1 is a perspective view of a trestle with four pivoting feet
- Figure 2 is a perspective view of a trestle with two pivoting legs and a fixed leg
- Figure 3 is a perspective view of a stepladder with two pivoting feet
- Figure 4 is a perspective view of a detail, on an enlarged scale
- Figure 5 is a sectional view along the line VV of Figure 4.
- Figures 1 to 3 respectively represent different forms of implementation of the 'invention. For simplification, the parts or elements which are found, identically or similarly, in these different forms of implementation, are designated by the same reference numerals.
- Figure 1 shows a trestle 1 of the kind used on construction sites, in particular used by painters to form a raised platform.
- This trestle 1 comprises a central structure 2 and four pivoting feet 3.
- the structure 2 is formed by two lateral uprights 4 of square cross section and two crosspieces 5 connecting these uprights 4 to each other. These crosspieces 5 are parallel to each other.
- each upright 4 has two pairs of legs 6 fixed to it, forming screeds for receiving the feet 3.
- Each pair of legs 6 is fixed to one face of the upright 4 perpendicular to the longitudinal axis of sleepers
- the legs 6 of an upright 4 are positioned at the same height as the legs 6 of the other upright 4.
- each upright 4 comprises two profiled parts 7 with a cross section in the shape of a "U".
- Each part 7 is fixed to the upright 4 by its intermediate wall so that its lower quarter, approximately, is at the level of the legs 6.
- the two side walls of the part 7 are positioned relative to each other by so that their outer faces come in close proximity to the inner faces of the legs
- the entire structure 2 can be metallic, and the uprights 4, crosspieces 5, lugs 6 and parts 7 can be fixed to each other by welding.
- Each foot 3 has a tubular structure and is connected to the structure 2 by a transverse pin 8 engaged transversely with respect to it, as well as through the two tabs 6 receiving this foot 3.
- Each foot 3 is subdivided, substantially in part and on the other side of the zone crossed by the pin 8, in a lower main part 3a and in an upper bent part 3b.
- the elbow formed in each leg 3 is such that the unfolding position of the legs 3 shown in FIGS. 1 and 4 provides good stability to the trestle 1. This unfolding position is determined by the arrival of the portions 3b resting against the parts 7. Referring more particularly to FIG.
- each leg 3 is slightly less than the distance separating the internal faces of the part 7, so that this external diameter is greater than the distance separating the internal faces of the side walls of this part 7. It follows that, in the unfolding position of the legs 3 shown in FIGS. 1, 4 and 5, each portion 3b comes to bear against the end edges of these side walls of the part 7 corresponding.
- each leg 3 has, at the upper part of this portion 3b, a threaded bore passing through this portion 3b, oriented in a direction perpendicular to that of the spindle 8.
- This the tapped bore receives a wing screw 9.
- This screw 9 comes, during its screwing, against the internal face of the intermediate wall of the part 7 and thus makes it possible to determine a maximum unfolding position of the foot 3.
- each foot 3 has a pivoting sole 10 at its lower end. This sole 10 allows a stable support grip of the foot 3 on the ground, whatever the angular position of the foot 3 relative to the structure 2, and makes it possible to avoid the sinking of the foot 3 in the case of loose soil.
- the screws 9 are unscrewed and the feet 3 are brought into the maximum pivoting position, in which they come into contact with the end edges of the side walls of the parts 7.
- This contact along two distant lines ensures perfect longitudinal wedging of the portions 3b, and therefore of the feet 3, notwithstanding the clearances which may exist at the level of the pins 8. This wedging eliminates any risk of stressing the legs 6 overhanging when a large load is supported by the trestle 1.
- the assembly formed by these feet 3 and by the structure 2 thus has perfect rigidity despite said play.
- the screw 9 of the foot 3 not in contact with the ground when the other three feet are in contact with the ground can be tightened so as to pivot this foot 3 until it brings it into an angular position in which the sole 10 of this foot 3 comes to bear on the ground.
- Perfect stability of the trestle 1 is thus obtained, combined with perfect rigidity of the assembly formed by the structure 2 and the feet 3.
- the trestle 1 is therefore able to receive relatively heavy loads even in the case of uneven ground, in perfect conditions of stability.
- FIG. 2 shows a trestle 1 similar to that which has just been described, except that it comprises two feet 3 on a longitudinal side and a single telescopic foot 15 on its other longitudinal end.
- This foot 15 is adjustable in height by means of a pin 16 and a series of holes 17, and comprises a lower plate 18 forming a support base on the ground.
- FIG. 3 shows a stepladder 20 comprising two pivoting feet 3 on a lateral side.
- the structure 2 is then formed by two uprights 21 which are bent to define upper portions forming the uprights 4 and fixed lower legs 3.
- the two uprights 21 are connected by crosspieces receiving plates 22 which form the steps of the stepladder 20.
- the invention provides a support having, compared to homologous supports of the prior art, the decisive advantage of being able to be placed stably on an irregular surface while being able to receive relatively loads heavy.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ladders (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2001274193A AU2001274193A1 (en) | 2000-06-05 | 2001-06-05 | Support such as trestle or a step ladder |
| EP01940685A EP1287284A1 (fr) | 2000-06-05 | 2001-06-05 | Support tel qu'un treteau ou un escabeau |
| US10/309,129 US6761249B2 (en) | 2000-06-05 | 2002-12-04 | Support such as a trestle or a stepladder |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR00/07135 | 2000-06-05 | ||
| FR0007135A FR2809793B1 (fr) | 2000-06-05 | 2000-06-05 | Instrument pour le support de personnes ou d'objets reposant sur 4 pieds dont au moins 2 des pieds sont articules independamment les uns des autres pour permettre d'assurer la stabilite de l'intrument |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/309,129 Continuation-In-Part US6761249B2 (en) | 2000-06-05 | 2002-12-04 | Support such as a trestle or a stepladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001094835A1 true WO2001094835A1 (fr) | 2001-12-13 |
Family
ID=8850943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2001/001727 Ceased WO2001094835A1 (fr) | 2000-06-05 | 2001-06-05 | Support tel qu'un treteau ou un escabeau |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1287284A1 (fr) |
| AU (1) | AU2001274193A1 (fr) |
| FR (1) | FR2809793B1 (fr) |
| WO (1) | WO2001094835A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011075794A1 (fr) * | 2009-12-24 | 2011-06-30 | All Terrain Tables Pty Ltd | Stabilisation d'objets |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2376356A1 (fr) * | 1976-12-31 | 1978-07-28 | Fives Cail Babcock | Dispositif pour assurer le maintien en equilibre d'une structure verticalement allongee |
| GB2020545A (en) | 1978-03-13 | 1979-11-21 | Post Office | Collapsible support stand |
| FR2754877A1 (fr) * | 1996-10-21 | 1998-04-24 | Lison Bernard | Pietement autostable a quatre pieds |
| US5954156A (en) * | 1998-08-17 | 1999-09-21 | Cooke; John E. | Adjustable saw horse |
| GB2337692A (en) * | 1998-05-20 | 1999-12-01 | Malcolm Cole Limited | Ajustable leg table |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2818309A (en) * | 1957-04-10 | 1957-12-31 | Nordell N Huffaker | Hinge and support for making a carpenter's saw horse |
| US3741509A (en) * | 1971-06-10 | 1973-06-26 | L Kelley | Tripod type jack assembly |
| US4836332A (en) * | 1988-04-22 | 1989-06-06 | Henson Robert M | Foldable sawhorse |
-
2000
- 2000-06-05 FR FR0007135A patent/FR2809793B1/fr not_active Expired - Fee Related
-
2001
- 2001-06-05 AU AU2001274193A patent/AU2001274193A1/en not_active Abandoned
- 2001-06-05 WO PCT/FR2001/001727 patent/WO2001094835A1/fr not_active Ceased
- 2001-06-05 EP EP01940685A patent/EP1287284A1/fr not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2376356A1 (fr) * | 1976-12-31 | 1978-07-28 | Fives Cail Babcock | Dispositif pour assurer le maintien en equilibre d'une structure verticalement allongee |
| GB2020545A (en) | 1978-03-13 | 1979-11-21 | Post Office | Collapsible support stand |
| FR2754877A1 (fr) * | 1996-10-21 | 1998-04-24 | Lison Bernard | Pietement autostable a quatre pieds |
| GB2337692A (en) * | 1998-05-20 | 1999-12-01 | Malcolm Cole Limited | Ajustable leg table |
| US5954156A (en) * | 1998-08-17 | 1999-09-21 | Cooke; John E. | Adjustable saw horse |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1287284A1 (fr) | 2003-03-05 |
| FR2809793A1 (fr) | 2001-12-07 |
| FR2809793B1 (fr) | 2002-08-16 |
| AU2001274193A1 (en) | 2001-12-17 |
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