Classifications

• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C13/00—Snow shoes
  • A63C13/008—Adjustable heel support therefor, e.g. climbing wedge
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C13/00—Snow shoes
  • A63C13/003—Means thereof for preventing slipping, e.g. crampons, e.g. on frame or shoe plate
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C13/00—Snow shoes
  • A63C13/005—Frames therefor
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C13/00—Snow shoes
  • A63C13/006—Shoe support thereof, e.g. plate, movable relative to the frame

Definitions

• the present invention relates to snowshoes used to walk on snow while avoiding excessive sinking below the upper surface of snow.
• Snowshoes have been known for a long time, especially in the Nordic countries, and allow you to move on flat or rough terrain, without sinking into powdery snow, and avoiding slipping. Snowshoes were formerly each made up of a chassis wooden peripheral, surrounding a perforated central sieve, with means for fixing a shoe on the upper face of the sieve
• snowshoes have been made entirely of molded plastic, or with a metal frame and sieve in intertwined strips.
• the stiffening frame is a peripheral frame whose cross section or thickness is clearly greater than that of the central screen, so that the peripheral edges of the racket are relatively thick. It is understood that such a structure has been naturally chosen to ensure good mechanical resistance of the peripheral racket area
• the carrying surface of the racket is permanently constituted by the entire lower surface of the racket, the peripheral frame forming the lowest area of the racket
• the carrying surface of the racket is permanently constituted by the entire lower surface of the racket, the peripheral frame forming the lowest area of the racket
• the lugs are generally fixed under the stiffening frame, or possibly under the front part fastening to come bite in the snow through a passage light of the forefoot
• the problem proposed by the present invention is to design a new snowshoe structure making it possible to significantly improve the grip on hard snow or ice, in a simple and inexpensive manner, by ensuring increased stability of the snowshoe.
• the attachment qualities of the racket on hard snow are improved without disturbing the longitudinal flexibility of the racket, flexibility providing good stability and a pleasant smoothness for striding.
• a snowshoe according to 1 the invention is such that • the interlocking hard elements comprise at least two substantially rectilinear blades formed of elongate strips of hard material each having a top longitudinal edge inserted into one of the side members, - the blades each have a lower longitudinal edge projecting from several teeth.
• the blades are preferably distributed on either side of the median longitudinal axis of the racket, and are advantageously arranged in the intermediate length of racket occupied by the shoe of the user.
• the blades have transverse slots in the hollow of certain teeth, giving the blade longitudinal flexibility in its plane to follow the longitudinal flexions of the racket in use.
• the blades can be force-fitted into corresponding slots in the side members.
• the knives are each formed of a series of separate blades of hard material substantially aligned; each blade has a projecting lower longitudinal edge with several teeth with the end teeth limited by inclined end edges.
• the blades can be overmolded in the plastic forming the corresponding spar.
• the chassis is narrow, with two side members substantially laterally bordering the middle area of snowshoe occupied by the shoe in use, - in the main lift zone located in the vicinity in front and behind the transverse axis articulation, the chassis is bordered laterally on either side by two lateral fins; the side members protrude below the general bearing plane formed by the screen and the side fins; the knife blades are inserted in the side members and project under the lower edge of the side members.
• This arrangement makes it possible to constitute a particularly rigid hanging structure close to the foot, favoring the precision and the stability of the support.
• FIG. 1 is a top view of a snowshoe body according to an embodiment of the present invention.
• FIG. 2 is a top view of the complete snowshoe according to the embodiment of Figure 1, with shoe attachment;
• FIG. 3 is a bottom view of the snowshoe body of Figure 1;
• FIG. 4 is a side view in longitudinal section along the longitudinal axis I-I of Figure 2;
• FIG. 5 illustrates the series of cross sections of the racket body of FIG. 1 according to the successive cutting planes A, B, C, D, E,
• Figure 6 is a schematic end view of the racket in flat use on relatively hard snow
• Figure 7 is a schematic view at the end of the racket in flat use on soft or soft snow
• FIG. 8 is a diagrammatic view at the end of the racket in use when crossing on hard snow
• FIG. 9 is a side view illustrating a knife structure according to an embodiment of the invention
• - Figure 10 is a partial view in cross section showing the engagement of a knife in the corresponding spar
• a snowshoe according to the invention comprises a racket body with stiffening frame and carrier screen 5, the underside of the racket body being intended to carry on snow
• a snowshoe according to the invention comprises a stiffening frame with two longitudinal members 1 and 2 connected by anterior 3 and rear cross members 4
• the stiffening frame surrounds a sieve carrier 5
• the chassis is narrow, the two rails 1 and 2 substantially laterally bordering the middle area of the racket occupied by the shoe in use
• the rails 1 and 2 are preferably substantially parallel to each other and to the longitudinal axis II of the racket, or diverging towards the front
• the side members 1 and 2 are preferably spaced apart by a distance of between 10 and 15 centimeters, corresponding to the has the usual width of the most common shoes, for an adult racket.
• the side members 1 and 2 are each formed of a beam with a generally rectangular section oriented with its great length generally perpendicular to the general plane of the racket.
• the racket body comprises, on its underside, hard hooking elements comprising at least two knives in the form of toothed blades 29 and 30 elongated substantially rectilinear in hard material, oriented substantially longitudinally along their length and substantially perpendicular to the general plane of the racket according to their width
• the teeth are oriented downwards, as we can see better on Figure 4, and protrude under the racket to bite into hard snow or ice.
• the toothed blades 29 and 30 each comprise an upper longitudinal edge (55 in FIG. 9) inserted in one of the side members 1 and 2, and a lower longitudinal edge projecting from several teeth 47-54.
• the teeth have a symmetrical triangular longitudinal profile, preferably with a rounded apex, with a tooth height of approximately 3 to 5 mm, and with an apex angle greater than approximately 60 °. Good results are obtained with a tooth height of about 4 mm, vertices rounded in a circle with a radius of about 1 mm, and an apex angle of about 73 °
• the total height of the blade can be approximately 17 mm, dividing between a projecting part, external to the side members, of height H1 equal to approximately 7 mm, and a part engaged in the side member at a height H2 of approximately 10 mm .
• the longitudinal members 1 and 2 comprise, in the support zone located under the boot, preferably from a position slightly in front of the transverse axis 8 to a median position the along the racket, the toothed blades 29 and 30 or knives projecting under the lower edge of the side members 1 and 2.
• a particularly rigid and stable support zone is formed for supporting the racket on hard snow or ice. It is understood that, in flat progression on hard snow or ice as illustrated in FIG.
• the racket is supported by the central support zone limited by the frame with side members 1 and 2 and end crosspieces, with the blades 29 and 30, constituting a support of reduced surface area and of width substantially equal to the width of the shoe
• the user thus finds a natural support, that is to say a support as similar as possible to the usual support of a walking shoe
• the bearing surface is then provided not only by the central screen area 5 between the side members 1 and 2, but also by the side fins 13 and 14 , increasing the support surface and the useful width of the racket When walking through hard snow as illustrated in FIG.
• the raised position of the fins 13 and 14, in particular the raised position of the external lateral edges 21 and 22, and the approximation of the side members 1 and 2 favor the use of the racket like a shoe, the racket coming to bite into hard snow by the spar l or 2 and the knife 29 or 30 which are upstream, reducing the slope of the racket and the twist of the ankle, ensuring a good grip while increasing comfort. It will be understood that the effect of reducing the gradient is obtained thanks to the particular structure of the racket body with a protruding narrow frame and raised lateral fins, independently of the presence of knives.
• the blades 29 and 30 are distributed on either side of the median longitudinal axis II of the racket.
• the blades 29 and 30 are arranged in the intermediate length of the racket occupied by the boot. the user For example, they occupy the length between a front end slightly in front of a transverse axis of articulation 8 for shoe fixation, and a rear end a little in front of the zone intended to be occupied by the heel of the shoe, for example near the middle of the length of the racket
• the knives are each formed from a single blade such as the blade 30, comprising transverse slots in the hollow between certain teeth, for example the slot 43 in the hollow between the teeth 47 and 48, the slot 44 in the hollow between the teeth 49 and 50, the slot 45 in the hollow between the teeth 51 and 52, and the slot 46 in the hollow between the teeth 53 and 54
• the slots are provided on one part significant blade height, the bottom of the slots being close to the opposite edge 55 of the blade 30, to give the blade 30 a longitudinal flexibility in its plane This flexibility allows the blade to follow the longitudinal flexions of the racket body during of use. This avoids the risk of separation between the blade and the racket body, and the racket retains the appropriate natural flexibility
• the upper edges 55 of the blades such as the blade 30 are forcibly engaged in corresponding slots such as the slot 56 of the racket member 2 or 1.
• the knives are each formed of a series of separate blades of hard material substantially aligned.
• Each blade has an upper longitudinal edge 55 inserted in one of the side members 1 or 2, and a lower longitudinal edge protruding with several teeth such as teeth 47-52, with the end teeth 47 and 52 limited by inclined end edges 147 and 152 .
• the blades each have a lower longitudinal edge projecting from several teeth, for example from six teeth 47-52 as illustrated in FIG. 11.
• each blade has a length of less than approximately 80 mm, for example approximately 70 mm, and is separated from the adjacent blades by plastic bridges.
• the constitution of the knives by a series of distinct relatively short blades substantially aligned one behind the other facilitates the molding of the plastic material forming the racket body, and makes it possible to obtain a satisfactory shape of racket body. less approximate of the blades one behind the other achieves a good grip stability of the racket on an ice slope
• the embedded part of the blade preferably comprises through holes 57 intended to be filled with plastic material during overmolding.
• the blades 29 and 30 are for example made of stainless steel, of width equal to approximately 1.5 mm, the height of the teeth 47-54 being approximately 4 mm.
• the teeth 47-52 of the blade can advantageously be alternately staggered to the right and to the left on either side of the general plane of the blade. hanging in the ice
• a similar arrangement of the staggered teeth can be envisaged in the embodiment of FIGS. 9 and 10.
• the racket comprises a shoe binding 6, consisting for example of a plate 7 articulated around a transverse axis 8, with means 9 for securing the front of the shoe, and with means 10 for securing the rear of the shoe.
• An anterior lumen 11, formed in the screen 5 in front of said transverse axis 8, allows passage of the front of the shoe during its pivoting around said transverse axis 8.
• the rear end 12 of the plate 7 can be selectively left free, in use, to allow free pivoting of the plate 7 about the transverse axis 8, or can be selectively locked by a locking wedge 112 shown in the figures 2 and 4
• the locking wedge 112 can simultaneously be shaped to serve selectively as a climbing wedge, coming to be housed under the rear end 12 of the plate 7
• the chassis is bordered laterally on either side by two lateral fins 13 and 14
• the lateral fins 13 and 14 each have a transverse profile raised in spider leg, better visible in section in FIG. 5, with, starting from the respective adjacent spar 1 or 2, a first portion respectively 15 or 16 inclined upwards to a top connection edge respectively 17 or 18.
• the top connection edge 17 or 18 connects the first portion 15 or 16 to a second portion respectively 19 or 20 itself inclined towards the down to the outer lateral edge 21 or 22 of the racket.
• the first portion 15 or 16 is advantageously longer than the second portion 19 or 20.
• the external lateral edge 21 or 22 is raised relative to the general plane of the screen 5.
• top connecting edges 17 and 18 constitute effective means of ⁇ gidification of the fins 13 and 14 which, moreover, consist of a relatively thin plate.
• transverse ribs are provided such as the ribs 23 and 24 connecting the faces adjacent lower first 15, 16 and second 19, 20 inclined portions of lateral fin 13 and 14.
• the side members 1 and 2 project below the general bearing plane formed by the screen 5 and the side fins 13 and 14.
• the side members 1 and 2 are connected to the sieve 5 and the lateral fins 13 and 14 at their upper end of beam of generally rectangular section.
• the side fins 13 and 14 have, from the transverse axis 8 in the direction of the front to the front of the racket, an edge 21 or 22 profiled area rear respectively 25 or 26 generally parallel or slightly deviated with respect to the longitudinal axis II of the racket and connecting angularly to a front zone respectively 27 or 28 concave approaching the longitudinal axis II of the racket.
• the front zone is
• This front zone 27 or 28 concave has, with the longitudinal axis II of the racket, an average angle of about 30 degrees.
• This front zone 27 or 28, angularly connected to the rear zone 25 or 26, constitutes a penetrating preferential zone, favoring the penetration of the corresponding upstream fin 13 or 14 in the snow on the side and towards the front as illustrated by the arrow 36 in FIG. 1, for example during a crossing crossing.
• the front end 31 and the rear end 32 of the racket are both curved longitudinally upwards.
• the upward bending of the front end 31 promotes the snowshoe front out of the snow during the stride. This effect is accentuated by the presence of the concave front region 27 or 28 of the lateral edge of the racket, which is highly convergent, connecting to a generally narrow anterior end region.
• Such a spatula structure before the racket has advantages for the progression of the racket in crusted snow, regardless of the presence of the knives.
• the upward curvature of the rear end 32 of the racket provides a good trolling effect, the rear end 32 remaining in contact with the snow when the front end is lifted by the foot during the stride, while increasing the lifting of the front end 31 of the racket to promote the exit of the front of the racket out of the snow.
• the screen 5 is generally a perforated flat surface.
• the screen 5 In the main lift zone of the racket located under the foot, behind the transverse axis 8, the screen 5 comprises two flexible lateral wings 33 and 34, secured according to their lateral edge external to the corresponding spar 1 or 2, and separated one from the other by a space 35, to give them elastic flexibility. By their elastic flexibility, the wings 33 and 34 promote the detachment of snow which naturally tends to accumulate under the sieve 5.

Landscapes

• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Cleaning Of Streets, Tracks, Or Beaches (AREA)
• Buildings Adapted To Withstand Abnormal External Influences (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9489114

Family Applications (1)

Country Status (5)

Families Citing this family (7)

Family Cites Families (4)

• 1996
  • 1996-02-09 FR FR9601717A patent/FR2744642B1/fr not_active Expired - Fee Related
• 1997
  • 1997-02-07 WO PCT/FR1997/000241 patent/WO1997028860A1/fr not_active Ceased
  • 1997-02-07 AT AT97904505T patent/ATE238829T1/de not_active IP Right Cessation
  • 1997-02-07 EP EP97904505A patent/EP0879072B1/de not_active Expired - Lifetime
  • 1997-02-07 DE DE69721490T patent/DE69721490D1/de not_active Expired - Lifetime

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events