CA2177316A1 - Anti-skid device for motor vehicle - Google Patents
Anti-skid device for motor vehicleInfo
- Publication number
- CA2177316A1 CA2177316A1 CA002177316A CA2177316A CA2177316A1 CA 2177316 A1 CA2177316 A1 CA 2177316A1 CA 002177316 A CA002177316 A CA 002177316A CA 2177316 A CA2177316 A CA 2177316A CA 2177316 A1 CA2177316 A1 CA 2177316A1
- Authority
- CA
- Canada
- Prior art keywords
- panel
- panels
- frame
- flange
- ramp
- 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.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B39/00—Increasing wheel adhesion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
This anti-skid device is designed to be laid particularly on muddy or sandy terrain ahead of and in engagement with the tread of a motor vehicle driving wheel tire, so that the driving wheel will roll over the device to provide traction over this slippery ground. The device is made of a series of flanged panels being pivotally interconnected in successive pairs by U-shape frames. The panels and U-frames are of successively decreasing sizes, so that the smaller size frame or panel fits between the legs or flanges of the next larger sized frame or panel. A ramp is also pivoted at one end of the device. The panels have a number of upwardly conical bored projections, for providing improved tire traction as well as for enabling flow through engagement of underlying mud or sand to better anchor and stabilize the device on the ground.
Description
2~77316 FIELD OF THE INVENTION
This invention relates to anti-skid devices for use under the driving wheel tire of stranded motor vehicles.
R~POUND OF THE INVENTION
United States patent No 4,568,020 issued 4 February 1986 to Réjean Gallichan, discloses an anti-skid device for use with the tires of a motor vehicle stuck on slippery ground terrain. This anti-skid device includes a series of from three to five U-shape frames, pivoted to one another to the adjacent end portions of successive pairs thereof and of progressively decreasing size. In operative condition, the U-frames are extended to form an elongated network. In inoperative condition, the U-frames fit into one another when not in use in folded storage condition. Some of the U-frames have ground-engaging teeth, and the smallest size frame has tire-engaging teeth.
Such an anti-skid device is useful on hardened snow or ice-covered ground, ahead of the tread of a driving wheel tire. However, this anti-skid device is not as efficient on softer mud or sand terrain, where the terrain conditions are not only slippery but also softer and thus unstable.
..
OBJECTS OF THE INVENTION
The gist of the invention is therefore to provide an anti-skid device for motor vehicles, more particularly destined to assist a motorist stranded over muddy or sandy terrain.
An object of the invention is to provide such an anti-skid device, which when not in use will be foldable into a very compact size for fitting in a corner of the motor vehicle trunk.
Another object of the invention is being of a type not likely to lead to injuries to persons or damage surrounding objects, including the motor vehicle tire itself.
~UNMARY OF THE INVENTION
In accordance with the objects of the invention, there is disclosed an anti-skid device designed to be laid particularly on muddy or sandy terrain ahead of and in engagement with the tread of a motor vehicle driving wheel tire, so that the driving wheel will roll over the device to provide traction over this slippery ground. The device is made of a series of flanged panels being pivotally interconnected in successive pairs by U-shape frames. The panels and U-frames are of successively decreasing sizes, so 21773~ 6 -that the smaller size frame or panel fits between the legs or flanges of the next larger sized frame or panel. An inclined tire loading ramp is further pivotally carried at one end of the device. The panels have a number of upwardly conical bored projections, for providing improved tire traction as well as for enabling flow through engagement of underlying mud or sand to better anchor and stabilize the device on the ground.
More particularly, the invention relates to a foldable anti-skid device for use in muddy terrain under the tire of a motor vehicle driving wheel, comprising: - at least two flanged panels and one arcuate frame mounted in between the panels, each said frame having a pair of legs interconnected by an integral transverse web, each said panel having a main body with toothed flanges carried transversely on a large fraction of its peripheral edge wherein a generally open well is formed within said flanges thereof, the opposite end portions of said flange forming a pair of flange extensions projecting beyond said panel main body, the successive frames and panels of said device being of progressively decreasing size, a smaller size said frame fitting into said well of the next larger size said panel while a smaller size said panel fits in between the two legs .~., of the next larger sized said frame, the portion of the legs of a smaller size said frame adjacent the web of said smaller size frame freely pivoted to said flange extensions of the next larger sized said panel for free pivotal movement of all the frames and panels relative to each other about axes substantially parallel to said webs between an extended position of the device, in which each frame and panel projects outwardly from an adjacent frame and panel, and a folded position of the device, wherein each and every smaller size said panel is folded into the well of a larger size said panel, each smaller size said frame nesting within the well of and being substantially contiguous with the next larger size said panel with all said frames and panels in substantially coplanar relation; said panels when said device is in extended position, having a ground-engaging side, said panels teeth formed at said ground-engaging side thereof, and said panels having an opposite tire engaging side; wherein each said panel main body has a plurality of conical projections upwardly projecting therefrom, each said conical projection being bored for free partial fluid through passage of fluid terrain material upon panel loading from the vehicle tire.
Preferably, there is further included a second smaller size arcuate frame, with its side legs inner end 2177al6 ...
portions pivotally mounted to said flange extensions of the smaller sized said panel, and a tire loading ramp, including a pair of opposite side tapered flanges, the latter flanges pivotally mounted by pivot mounts to the outer end portions of said second frame, said ramp including a generally flat tire-engaging surface wherein the latter surface is downwardly outwardly inclined so that a free leading edge of said inclined ramp is destined to engage ground.
A rigid lip could also project transversely from an inner portion of said tire-engaging surface opposite said leading edge thereof; and each said panel having a central slot of a shape complementary to that of said rigid lip;
wherein said rigid lip engages said slots of said panels upon said frames and said panels being pivoted to the folded condition of the anti-skid device.
Advantageously, there is also provided a generally flat ramp member, said ramp member having a pair of opposite transverse flanges, the latter flanges tapering to a thinnest section proximate a free leading edge of said ramp member, said leading edge being opposite said second arcuate frame; -fourth pivot means, transversely pivoting said side legs outer end portions of said second arcuate frame to said ramp member flanges; wherein said ramp leading edge is destined to engage ...
ground in the operative condition of said anti-skid device, with said ramp being downwardly outwardly inclined.
Preferably, each panel has a slot, said slots of a shape complementary to said rigid lip, said slots engaged by said rigid lip upon said anti-skid device being brought to its folded condition. Said ramp leading edge could carry a notched lip, extending transversely of said ramp member flanges.
Preferably, said arcuate frame is U-shape.
Figure 1 is a perspective view of a preferred embodiment of anti-skid device, being in its fully extended operative condition;
Figure 2 is an isometric view of the anti-skid device of figure 1, being in a partly retracted, upright condition;
Figure 3 is a top plan view of the extended anti-skid device of figure l;
Figure 4 is a longitudinal sectional view of the extended anti-skid device of figure 3;
Figure 5 is a view at an enlarged scale of the area circumscribed by arrow 5 in figure 4, and further showing an 21773 1~
underlying body of earth mud into which the anti-skid device has partly sunk;
Figure 6 is an isometric view of the anti-skid device in its fully folded, storage condition; and Figure 7 is a cross-sectional view taken along line 7-7 of fig 6.
DET~TT~n DE8CRIPTION OF THE EMBODINENT~ OF THE INVENTION
The preferred embodiment of anti-skid device 10 shown in figures 1-2 includes a pair of U-shape frames 12, 14, being pivotally interconnected to an intermediate panel 16, and also pivotally carrying at the opposite ends thereof two additionnal panels 18, 19. In its operative condition illustrated in figures 1 and 3, the five structural elements thereof are extended in coplanar fashion to form a generally rectangular, flat structure to be laid horizontally on a slippery ground surface, ahead of and in engagement with the tread of the driving wheel tire of a motor vehicle.
A preferred material for device 10 would be flat bar metal stock, e.g. galvanized steel, or other rustproof metallic material, or other very sturdy materials; such material being bent to form the stated shapes. More particularly, each U-frame 12, 14, includes a rectangular flat 217731~ ' web 12a, 14a, respectively, and two rectangular flat side legs 12b, 12c, and 14b, 14c, respectively. Intermediate panel 16 includes a main wall 17 with three downturned transverse flanges 20, 22, 24, each flange 20-24 carrying serrated teeth 20a, 22a, 24a; a number, e.g. five upturned conical bored projections 26 also project upwardly from the intermediate panel 16, with an ovoidal slot 28 joining two bored cones 26', 26" which are parallel and proximate to the interior toothed flange 20, for a purpose later set forth. Panel 16 includes a large notch 30 at its end opposite flange 20, wherein two opposite lateral half side leg extensions 22b, 24b, are formed from the extension of legs 22 and 24.
The free ends of U-frame legs 12b, 12c, engage against the external face of flanges 22, 24, and are pivotally mounted thereto by pivot mounts 32; while the free ends of flange extensions 22b, 24b, engage against the external face of the interior portion of U-frame legs 14b, 14c, and are pivotally mounted thereto by pivot mounts 34. As suggested in figure 2, upon relative pivotal motion of panel 18 and U-frame 14 to a transverse condition, a rectangular gap G is formed between the web 14a and the notched edge 30 of panel 18.
Panel 18 is similar to panel 16, except that it may include more - e.g. eight - upwardly conical bores 36, with ~17731~
the two central bores 36', 36'' being joined by an ovoidal bore 38 extending parallel to the serrated toothed flange web 40 of the panel 18. The free ends of the lateral side flange extensions 42b, 44b, of the lateral side flanges 42, 44, engage against the external face of the interior portion of toothed flanges 22, 24, of panel 16, and are pivoted thereto by pivot mounts 46.
Panel 19 includes a flat main body 48, having a central straight bore 50, an upturned full flange 52 on its outer or "leading'' edge, and an upturned short intermediate flange 54 on its internal edge, and two lateral side edge flanges 56, 58, which taper (i.e. are of decreasing height) starting from the internal edge of panel main body 48. A
reinforcing rib 60 is carried by main body 48, being located intermediate central bore 50 and short internal edge flange 54, and extending parallel to outer edge flange 52. The free ends of lateral side legs 14b, 14c, engage the external face of the interior largest portion of lateral flanges 56, 58, and are pivoted thereto by pivot mounts 62.
Leading edge flange 52 includes two successive intermediate notches 52a. Short intermediate flange or rigid lip 54 is sized for free through engagement into ovoidal slots 28, 38, of panels 16, 18, upon folding of the device 10 .~.
sequentially from its extended condition of figure 1, to its partly folded condition of figure 2, to its fully folded condition of figure 6.
As suggested in figure 5, the height of the toothed flanges is greater than that of the U-frames, so that their teeth engage ground in a positive fashion, wherein in unloaded condition, the U-frames 12, 14, do not come into engagement with ground unless the whole device 10 is loaded by the motor vehicle tire and the ground terrain is soft so that device 10 sinks. It is noted that the U-frames 12, 14, do not include ground-engaging teeth. Moreover, the end panel 19 forms an inclined ramp, due to the tapered lateral side flanges thereof 56, 58, to facilitate motor vehicle wheel engagement over the flange leading edge 52 and onto the top bored panel surfaces of the device 10 in its extended condition. Notches 52a of the ramp flange leading edge 52 provide improve tire gripping performance by engaging the conventional grooves of the motor vehicle tire treads, particularly those of four-seasons type.
As suggested in figure 5, upon the extended device 10 being applied over a muddy or sandy surface, the toothed flanges thereof 22, 24, 42, 44, will sink into ground while mud material will engage into the cone bores 26, 36, of the panels 16, 18, extend through and beyond the panel bores, to .
form upturned anchoring mud projections. Such a conically bored panel construction provides unexpected and particularly advantageous results in stabilizing the anti-skid device 10 on the ground, in preventing excessive sinking action of the device components, while enhancing tire traction on the upper surface of the conically bored panels 16, 18. Moreover, the pivotal articulation linking the various U-frames and conically bored panels further provide improved self-adaptation of the device 10 to uneven terrain and to rolling tire load stresses.
When not in use, the device 10 can be folded in a compact fashion, as illustrated in figures 6 and 7, with the panels 16, 18 and 19 abutting flatly against one another.
Tongue 54, by engaging the registering ovoidal slots 28 and 38 of the panels 16 and 18, provide a transverse interlocking engagement that keeps the device 10 in its folded storage condition of figures 6 and 7 under its own weight.
This invention relates to anti-skid devices for use under the driving wheel tire of stranded motor vehicles.
R~POUND OF THE INVENTION
United States patent No 4,568,020 issued 4 February 1986 to Réjean Gallichan, discloses an anti-skid device for use with the tires of a motor vehicle stuck on slippery ground terrain. This anti-skid device includes a series of from three to five U-shape frames, pivoted to one another to the adjacent end portions of successive pairs thereof and of progressively decreasing size. In operative condition, the U-frames are extended to form an elongated network. In inoperative condition, the U-frames fit into one another when not in use in folded storage condition. Some of the U-frames have ground-engaging teeth, and the smallest size frame has tire-engaging teeth.
Such an anti-skid device is useful on hardened snow or ice-covered ground, ahead of the tread of a driving wheel tire. However, this anti-skid device is not as efficient on softer mud or sand terrain, where the terrain conditions are not only slippery but also softer and thus unstable.
..
OBJECTS OF THE INVENTION
The gist of the invention is therefore to provide an anti-skid device for motor vehicles, more particularly destined to assist a motorist stranded over muddy or sandy terrain.
An object of the invention is to provide such an anti-skid device, which when not in use will be foldable into a very compact size for fitting in a corner of the motor vehicle trunk.
Another object of the invention is being of a type not likely to lead to injuries to persons or damage surrounding objects, including the motor vehicle tire itself.
~UNMARY OF THE INVENTION
In accordance with the objects of the invention, there is disclosed an anti-skid device designed to be laid particularly on muddy or sandy terrain ahead of and in engagement with the tread of a motor vehicle driving wheel tire, so that the driving wheel will roll over the device to provide traction over this slippery ground. The device is made of a series of flanged panels being pivotally interconnected in successive pairs by U-shape frames. The panels and U-frames are of successively decreasing sizes, so 21773~ 6 -that the smaller size frame or panel fits between the legs or flanges of the next larger sized frame or panel. An inclined tire loading ramp is further pivotally carried at one end of the device. The panels have a number of upwardly conical bored projections, for providing improved tire traction as well as for enabling flow through engagement of underlying mud or sand to better anchor and stabilize the device on the ground.
More particularly, the invention relates to a foldable anti-skid device for use in muddy terrain under the tire of a motor vehicle driving wheel, comprising: - at least two flanged panels and one arcuate frame mounted in between the panels, each said frame having a pair of legs interconnected by an integral transverse web, each said panel having a main body with toothed flanges carried transversely on a large fraction of its peripheral edge wherein a generally open well is formed within said flanges thereof, the opposite end portions of said flange forming a pair of flange extensions projecting beyond said panel main body, the successive frames and panels of said device being of progressively decreasing size, a smaller size said frame fitting into said well of the next larger size said panel while a smaller size said panel fits in between the two legs .~., of the next larger sized said frame, the portion of the legs of a smaller size said frame adjacent the web of said smaller size frame freely pivoted to said flange extensions of the next larger sized said panel for free pivotal movement of all the frames and panels relative to each other about axes substantially parallel to said webs between an extended position of the device, in which each frame and panel projects outwardly from an adjacent frame and panel, and a folded position of the device, wherein each and every smaller size said panel is folded into the well of a larger size said panel, each smaller size said frame nesting within the well of and being substantially contiguous with the next larger size said panel with all said frames and panels in substantially coplanar relation; said panels when said device is in extended position, having a ground-engaging side, said panels teeth formed at said ground-engaging side thereof, and said panels having an opposite tire engaging side; wherein each said panel main body has a plurality of conical projections upwardly projecting therefrom, each said conical projection being bored for free partial fluid through passage of fluid terrain material upon panel loading from the vehicle tire.
Preferably, there is further included a second smaller size arcuate frame, with its side legs inner end 2177al6 ...
portions pivotally mounted to said flange extensions of the smaller sized said panel, and a tire loading ramp, including a pair of opposite side tapered flanges, the latter flanges pivotally mounted by pivot mounts to the outer end portions of said second frame, said ramp including a generally flat tire-engaging surface wherein the latter surface is downwardly outwardly inclined so that a free leading edge of said inclined ramp is destined to engage ground.
A rigid lip could also project transversely from an inner portion of said tire-engaging surface opposite said leading edge thereof; and each said panel having a central slot of a shape complementary to that of said rigid lip;
wherein said rigid lip engages said slots of said panels upon said frames and said panels being pivoted to the folded condition of the anti-skid device.
Advantageously, there is also provided a generally flat ramp member, said ramp member having a pair of opposite transverse flanges, the latter flanges tapering to a thinnest section proximate a free leading edge of said ramp member, said leading edge being opposite said second arcuate frame; -fourth pivot means, transversely pivoting said side legs outer end portions of said second arcuate frame to said ramp member flanges; wherein said ramp leading edge is destined to engage ...
ground in the operative condition of said anti-skid device, with said ramp being downwardly outwardly inclined.
Preferably, each panel has a slot, said slots of a shape complementary to said rigid lip, said slots engaged by said rigid lip upon said anti-skid device being brought to its folded condition. Said ramp leading edge could carry a notched lip, extending transversely of said ramp member flanges.
Preferably, said arcuate frame is U-shape.
Figure 1 is a perspective view of a preferred embodiment of anti-skid device, being in its fully extended operative condition;
Figure 2 is an isometric view of the anti-skid device of figure 1, being in a partly retracted, upright condition;
Figure 3 is a top plan view of the extended anti-skid device of figure l;
Figure 4 is a longitudinal sectional view of the extended anti-skid device of figure 3;
Figure 5 is a view at an enlarged scale of the area circumscribed by arrow 5 in figure 4, and further showing an 21773 1~
underlying body of earth mud into which the anti-skid device has partly sunk;
Figure 6 is an isometric view of the anti-skid device in its fully folded, storage condition; and Figure 7 is a cross-sectional view taken along line 7-7 of fig 6.
DET~TT~n DE8CRIPTION OF THE EMBODINENT~ OF THE INVENTION
The preferred embodiment of anti-skid device 10 shown in figures 1-2 includes a pair of U-shape frames 12, 14, being pivotally interconnected to an intermediate panel 16, and also pivotally carrying at the opposite ends thereof two additionnal panels 18, 19. In its operative condition illustrated in figures 1 and 3, the five structural elements thereof are extended in coplanar fashion to form a generally rectangular, flat structure to be laid horizontally on a slippery ground surface, ahead of and in engagement with the tread of the driving wheel tire of a motor vehicle.
A preferred material for device 10 would be flat bar metal stock, e.g. galvanized steel, or other rustproof metallic material, or other very sturdy materials; such material being bent to form the stated shapes. More particularly, each U-frame 12, 14, includes a rectangular flat 217731~ ' web 12a, 14a, respectively, and two rectangular flat side legs 12b, 12c, and 14b, 14c, respectively. Intermediate panel 16 includes a main wall 17 with three downturned transverse flanges 20, 22, 24, each flange 20-24 carrying serrated teeth 20a, 22a, 24a; a number, e.g. five upturned conical bored projections 26 also project upwardly from the intermediate panel 16, with an ovoidal slot 28 joining two bored cones 26', 26" which are parallel and proximate to the interior toothed flange 20, for a purpose later set forth. Panel 16 includes a large notch 30 at its end opposite flange 20, wherein two opposite lateral half side leg extensions 22b, 24b, are formed from the extension of legs 22 and 24.
The free ends of U-frame legs 12b, 12c, engage against the external face of flanges 22, 24, and are pivotally mounted thereto by pivot mounts 32; while the free ends of flange extensions 22b, 24b, engage against the external face of the interior portion of U-frame legs 14b, 14c, and are pivotally mounted thereto by pivot mounts 34. As suggested in figure 2, upon relative pivotal motion of panel 18 and U-frame 14 to a transverse condition, a rectangular gap G is formed between the web 14a and the notched edge 30 of panel 18.
Panel 18 is similar to panel 16, except that it may include more - e.g. eight - upwardly conical bores 36, with ~17731~
the two central bores 36', 36'' being joined by an ovoidal bore 38 extending parallel to the serrated toothed flange web 40 of the panel 18. The free ends of the lateral side flange extensions 42b, 44b, of the lateral side flanges 42, 44, engage against the external face of the interior portion of toothed flanges 22, 24, of panel 16, and are pivoted thereto by pivot mounts 46.
Panel 19 includes a flat main body 48, having a central straight bore 50, an upturned full flange 52 on its outer or "leading'' edge, and an upturned short intermediate flange 54 on its internal edge, and two lateral side edge flanges 56, 58, which taper (i.e. are of decreasing height) starting from the internal edge of panel main body 48. A
reinforcing rib 60 is carried by main body 48, being located intermediate central bore 50 and short internal edge flange 54, and extending parallel to outer edge flange 52. The free ends of lateral side legs 14b, 14c, engage the external face of the interior largest portion of lateral flanges 56, 58, and are pivoted thereto by pivot mounts 62.
Leading edge flange 52 includes two successive intermediate notches 52a. Short intermediate flange or rigid lip 54 is sized for free through engagement into ovoidal slots 28, 38, of panels 16, 18, upon folding of the device 10 .~.
sequentially from its extended condition of figure 1, to its partly folded condition of figure 2, to its fully folded condition of figure 6.
As suggested in figure 5, the height of the toothed flanges is greater than that of the U-frames, so that their teeth engage ground in a positive fashion, wherein in unloaded condition, the U-frames 12, 14, do not come into engagement with ground unless the whole device 10 is loaded by the motor vehicle tire and the ground terrain is soft so that device 10 sinks. It is noted that the U-frames 12, 14, do not include ground-engaging teeth. Moreover, the end panel 19 forms an inclined ramp, due to the tapered lateral side flanges thereof 56, 58, to facilitate motor vehicle wheel engagement over the flange leading edge 52 and onto the top bored panel surfaces of the device 10 in its extended condition. Notches 52a of the ramp flange leading edge 52 provide improve tire gripping performance by engaging the conventional grooves of the motor vehicle tire treads, particularly those of four-seasons type.
As suggested in figure 5, upon the extended device 10 being applied over a muddy or sandy surface, the toothed flanges thereof 22, 24, 42, 44, will sink into ground while mud material will engage into the cone bores 26, 36, of the panels 16, 18, extend through and beyond the panel bores, to .
form upturned anchoring mud projections. Such a conically bored panel construction provides unexpected and particularly advantageous results in stabilizing the anti-skid device 10 on the ground, in preventing excessive sinking action of the device components, while enhancing tire traction on the upper surface of the conically bored panels 16, 18. Moreover, the pivotal articulation linking the various U-frames and conically bored panels further provide improved self-adaptation of the device 10 to uneven terrain and to rolling tire load stresses.
When not in use, the device 10 can be folded in a compact fashion, as illustrated in figures 6 and 7, with the panels 16, 18 and 19 abutting flatly against one another.
Tongue 54, by engaging the registering ovoidal slots 28 and 38 of the panels 16 and 18, provide a transverse interlocking engagement that keeps the device 10 in its folded storage condition of figures 6 and 7 under its own weight.
Claims (8)
1. A foldable anti-skid device for use under the tire of a motor vehicle driving wheel, comprising:
- at least two flanged panels and one U-shape frame mounted in between each pair of panels, said frame having a pair of legs interconnected by an integral transverse web, each said panel having a main body with a toothed flange carried transversely on a large fraction of its peripheral edge wherein a generally open well is formed within the peripheral flange thereof, the opposite end portions of said flange forming a pair of flange extensions projecting beyond said panel main body, the successive frames and panels of said device being of progressively decreasing size, a smaller size said frame fitting into said well of the next larger size said panel while a smaller size said panel fits in between the two legs of the next larger size said frame, the portion of the legs of a smaller size said frame adjacent the web of said smaller size frame freely pivoted to said flange extensions of the next larger size said panel for free pivotal movement of all the frames and panels relative to each other about axes substantially parallel to said webs between an extended position of the device, in which each frame and panel projects outwardly from an adjacent frame and panel, and a folded position of the device, wherein each and every smaller size said panel is folded into the well of a larger size said panel, each smaller size said frame nesting within the well of and being substantially contiguous with the next larger said panel with all said frames and panels in substantially coplanar relation; said panels when said device is in extended position, having a ground-engaging side, said panels flange teeth formed at said ground-engaging side thereof, and said panels having an opposite tire-engaging side;
wherein each said panel main body has a plurality of conical projections upwardly projecting therefrom, each said conical projection being bored for free partial fluid through passage of fluid terrain material upon panel loading from the vehicle tire.
- at least two flanged panels and one U-shape frame mounted in between each pair of panels, said frame having a pair of legs interconnected by an integral transverse web, each said panel having a main body with a toothed flange carried transversely on a large fraction of its peripheral edge wherein a generally open well is formed within the peripheral flange thereof, the opposite end portions of said flange forming a pair of flange extensions projecting beyond said panel main body, the successive frames and panels of said device being of progressively decreasing size, a smaller size said frame fitting into said well of the next larger size said panel while a smaller size said panel fits in between the two legs of the next larger size said frame, the portion of the legs of a smaller size said frame adjacent the web of said smaller size frame freely pivoted to said flange extensions of the next larger size said panel for free pivotal movement of all the frames and panels relative to each other about axes substantially parallel to said webs between an extended position of the device, in which each frame and panel projects outwardly from an adjacent frame and panel, and a folded position of the device, wherein each and every smaller size said panel is folded into the well of a larger size said panel, each smaller size said frame nesting within the well of and being substantially contiguous with the next larger said panel with all said frames and panels in substantially coplanar relation; said panels when said device is in extended position, having a ground-engaging side, said panels flange teeth formed at said ground-engaging side thereof, and said panels having an opposite tire-engaging side;
wherein each said panel main body has a plurality of conical projections upwardly projecting therefrom, each said conical projection being bored for free partial fluid through passage of fluid terrain material upon panel loading from the vehicle tire.
2. A foldable anti-skid device as defined in claim 1, further including a second smaller size U-shape frame, with its side legs inner end portions pivotally mounted to said flange extensions of the smaller size said panel, and a tire loading ramp, including a pair of opposite side tapered flanges, the latter flanges pivotally mounted by pivot mounts to the outer end portions of said second frame, said ramp including a generally flat tire-engaging surface wherein the latter surface is downwardly outwardly inclined so that a free leading edge of said inclined ramp is destined to engage ground.
3. A foldable anti-skid device as defined in claim 2, further including a rigid lip, projecting transversely from an inner portion of said tire-engaging surface opposite said leading edge thereof; and each said panel having a central slot of a shape complementary to that of said rigid lip;
wherein said rigid lip engages said slots of said panels upon said frames and said panels being pivoted to the folded condition of the anti-skid device.
wherein said rigid lip engages said slots of said panels upon said frames and said panels being pivoted to the folded condition of the anti-skid device.
4. A foldable anti-skid device for use over slippery terrain under the tire of a motor vehicle driving wheel, comprising:
- first and second panels, each panel defining a top tire-engaging wall and a bottom wall, each panel having a flange projecting transversely from a large fraction of the peripheral edge thereof wherein a generally open well is formed by said flange and said panel bottom wall, each panel flange defining a bottom edge carrying a plurality of ground-engaging teeth, a pair of ear members depending from opposite end portions of said flange, a number of conical bodies upwardly projecting from each panel top wall, each conical body having a central through-bore straddling said top and bottom walls of said panel;
- first and second U-shape frames, each frame having a web and two side legs, each side leg having an inner portion, adjacent said web, and an outer end portion;
- first pivot means, transversely pivoting said ear members of said first panel to said side legs inner portion of said first U-shape frame;
- second pivot means, transversely pivoting said ear members of said second panel to said side legs inner portion of said second U-shape frame;
- third pivot means, transversely pivoting said side legs outer end portions of said first U-shape frame to intermediate sections of said flange of said second panel;
wherein said first panel, said first frame, said second panel and said second frame are of progressively decreasing size, respectively, so that said anti-skid device is pivotable between an inoperative folded condition, where said second panel is engaged into and nested within said well of said first panel and said first and second frames are respectively engaged into said wells of said first and second panels, and an operative extended condition, wherein said first and second panels are spaced by said first frame and said panels and said frames are all coplanar to one another.
- first and second panels, each panel defining a top tire-engaging wall and a bottom wall, each panel having a flange projecting transversely from a large fraction of the peripheral edge thereof wherein a generally open well is formed by said flange and said panel bottom wall, each panel flange defining a bottom edge carrying a plurality of ground-engaging teeth, a pair of ear members depending from opposite end portions of said flange, a number of conical bodies upwardly projecting from each panel top wall, each conical body having a central through-bore straddling said top and bottom walls of said panel;
- first and second U-shape frames, each frame having a web and two side legs, each side leg having an inner portion, adjacent said web, and an outer end portion;
- first pivot means, transversely pivoting said ear members of said first panel to said side legs inner portion of said first U-shape frame;
- second pivot means, transversely pivoting said ear members of said second panel to said side legs inner portion of said second U-shape frame;
- third pivot means, transversely pivoting said side legs outer end portions of said first U-shape frame to intermediate sections of said flange of said second panel;
wherein said first panel, said first frame, said second panel and said second frame are of progressively decreasing size, respectively, so that said anti-skid device is pivotable between an inoperative folded condition, where said second panel is engaged into and nested within said well of said first panel and said first and second frames are respectively engaged into said wells of said first and second panels, and an operative extended condition, wherein said first and second panels are spaced by said first frame and said panels and said frames are all coplanar to one another.
5. A foldable anti-skid device as defined in claim 4, further including:
- a generally flat ramp member, said ramp member having a pair of opposite transverse flanges, the latter flanges tapering to a thinnest section proximate a free leading edge of said ramp member, said leading edge being opposite said second U-shape frame;
- fourth pivot means, transversely pivoting said side legs outer end portions of said second U-shape frame to said ramp member flanges;
wherein said ramp leading edge is destined to engage ground in the operative condition of said anti-skid device, with said ramp being downwardly-outwardly-inclined.
- a generally flat ramp member, said ramp member having a pair of opposite transverse flanges, the latter flanges tapering to a thinnest section proximate a free leading edge of said ramp member, said leading edge being opposite said second U-shape frame;
- fourth pivot means, transversely pivoting said side legs outer end portions of said second U-shape frame to said ramp member flanges;
wherein said ramp leading edge is destined to engage ground in the operative condition of said anti-skid device, with said ramp being downwardly-outwardly-inclined.
6. A foldable anti-skid device as defined in claim 5, with each panel having a slot, said slots of a shape complementary to said rigid lip, said slots being engaged by said rigid lip upon said anti-skid device being brought to its folded condition wherein said panels and ramp interlock with one another.
7. A foldable anti-skid device as in claim 5, with said ramp leading edge carrying a notched lip, extending transversely of said ramp member flanges.
8. A foldable anti-skid device as in claim 5, with said ramp further including a reinforcing rib, extending parallel to said leading edge thereof on the opposite side thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002177316A CA2177316A1 (en) | 1996-05-24 | 1996-05-24 | Anti-skid device for motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002177316A CA2177316A1 (en) | 1996-05-24 | 1996-05-24 | Anti-skid device for motor vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2177316A1 true CA2177316A1 (en) | 1997-11-25 |
Family
ID=4158262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002177316A Abandoned CA2177316A1 (en) | 1996-05-24 | 1996-05-24 | Anti-skid device for motor vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2177316A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006120713A1 (en) * | 2005-05-11 | 2006-11-16 | Coneroplastik Dl Giaccaglia Malvina E C.- S.N.C. | Multi-functional apparatus for motorists, especially camper van drivers |
-
1996
- 1996-05-24 CA CA002177316A patent/CA2177316A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006120713A1 (en) * | 2005-05-11 | 2006-11-16 | Coneroplastik Dl Giaccaglia Malvina E C.- S.N.C. | Multi-functional apparatus for motorists, especially camper van drivers |
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| Date | Code | Title | Description |
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| FZDE | Dead |