CA2217132A1 - Traction-aid device for a vehicle wheel - Google Patents
Traction-aid device for a vehicle wheel Download PDFInfo
- Publication number
- CA2217132A1 CA2217132A1 CA 2217132 CA2217132A CA2217132A1 CA 2217132 A1 CA2217132 A1 CA 2217132A1 CA 2217132 CA2217132 CA 2217132 CA 2217132 A CA2217132 A CA 2217132A CA 2217132 A1 CA2217132 A1 CA 2217132A1
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- CA
- Canada
- Prior art keywords
- traction
- vehicle wheel
- tread
- aid
- arms
- 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
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C27/00—Non-skid devices temporarily attachable to resilient tyres or resiliently-tyred wheels
- B60C27/06—Non-skid devices temporarily attachable to resilient tyres or resiliently-tyred wheels extending over the complete circumference of the tread, e.g. made of chains or cables
- B60C27/10—Non-skid devices temporarily attachable to resilient tyres or resiliently-tyred wheels extending over the complete circumference of the tread, e.g. made of chains or cables having tensioning means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C27/00—Non-skid devices temporarily attachable to resilient tyres or resiliently-tyred wheels
- B60C27/02—Non-skid devices temporarily attachable to resilient tyres or resiliently-tyred wheels extending over restricted arcuate part of tread
- B60C27/04—Non-skid devices temporarily attachable to resilient tyres or resiliently-tyred wheels extending over restricted arcuate part of tread the ground-engaging part being rigid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
Abstract
The traction-aid device comprises an elongated traction-aid member having a length exceeding half the circumference of the vehicle wheel onto which the device is to be installed. The traction-aid member is flexible and has a rugged outer face and a pair of opposite ends. The ends of the traction-aid member are respectively attached to a pair of L-shaped arms having first ends adapted to extend transversely on the tread of the vehicle wheel and second ends adapted to extend alongside the vehicle wheel. A clamping arrangement is provided for pulling, as the traction-aid member is mounted onto the tread of the vehicle wheel, the second ends of the arms inwardly of the vehicle wheel, thereby causing the first ends of the arms to firmly clamp on the tread of the vehicle wheel to maintain the traction-aid member in place on the tread.
Description
. CA 02217132 1997-10-23 TRACTION-AID DEVICE FOR A VEHICLE WHEEL
FIELD OF THE INVENTION
This invention relates in general to devices attachable to vehicle tires to improve their traction on slippery surfaces like those covered with snow or ice,and more particularly to a traction-aid device that can be readily and quickly mounted onto the wheels of a vehicle and provides continuous traction over a major part of the wheels.
BACKGROUND
One of the most popular types of traction-aid devices is probably the track-like traction-aid device that is partly slid under the driving wheel of the vehicle and is provided with an upper surface configured to provide a non-slippery surface for a wheel in rotation, and a toothed underside to bite into the slippery ground. Although this traction-aid device is normally easy to use, it only provides for a one-shot use and must be set back in place if more traction is required. The major drawbacks of the device are however that it is generally propelled by the rotating wheel, so that it can be lost in the snow, can damage the vehicle and even injure somebody in the trajectory of the ejected traction-aid device.
Another popular type of traction-aid device consists simply of an arrangement of chains wrapped around the tires. However, the installation of chains is rather difficult and is not adapted for occasional uses.
Known in the art are US patent Nos. 2,423,759 (Edwards); 2,586,049 (Jacobs); 2,729,261 (Rucker); 2,837,133 (Armenante et al.); 3,103,242 (Culp);
3,565,150 (Carr); 3,918,504 (Prokesch); 4,176,704 (Thorpe); 4,209,049 (Regensburger); 4,378,833 (Lindblad et al.); 4,836,258 (Ellis); and 4,862,936 (McDonough), that teach various types of traction-aid devices or the like, whichare intended to remain around the wheel during their use. However, none of the above documents provides a really practical, easy and safe to use, highly efficient and versatile traction-aid device. In most cases, the devices provide traction-aid elements peripherally disposed around the wheel and spaced apart from each other so the wheel is subjected to spinning strokes while turning, thereby creating stress on the vehicle transmission. In some cases, the devices are not easily removable and thus are rather intended for permanent use, like chains.
One object of the present invention is to provide a traction-aid device that is easy to install and safe to use, yet which provides an almost continuous traction-aid action around the wheel.
The traction-aid device according to the present invention comprises an 10 elongated traction-aid member having a length exceeding half the circumference of the vehicle wheel onto which the device is to be installed. The traction-aid member is flexible and has a rugged outer face and a pair of opposite ends. The traction-aid device also comprises a pair of L-shaped arms each having a first end adapted to extend transversely on the tread of the vehicle wheel, and a second 15 end adapted to extend alongside the vehicle wheel. The ends of the traction-aid member are respectively attached to the first ends of the arms. A clamping means is provided for pulling, as the traction-aid member is mounted onto the tread of the vehicle wheel with the outer face of the traction-aid member extending outwardly with respect to the vehicle wheel while the arms are 20 disposed alongside the vehicle wheel with the first ends extending transversely on the tread of the vehicle wheel at each end of the traction-aid member, the second ends of the arms inwardly of the vehicle wheel, thereby causing the firstends of the arms to firmly clamp on the tread of the vehicle wheel to maintain the traction-aid member in place on the tread of the vehicle wheel.
The almost continuous traction-aid action around the wheel is especially useful for a vehicle that must go up a hill, the traction-aid device remaining clamped on the vehicle wheel during the whole ascent.
BRIEF DESCRIPTION OF THE DRAWINGS
A detailed description of preferred embodiments of the invention will be given herein below with reference to the following drawings, in which like . CA 02217132 1997-10-23 numbers refer to like elements:
Figure 1 is a front elevation view of a vehicle wheel equipped with a traction-aid device according to a first embodiment of the invention, having a first variation of traction-aid member;
Figure 2 is a side elevation view of the vehicle wheel equipped with the traction-aid device of Figure 1;
Figure 3 is a top plan view of the traction-aid device shown in Figure 1;
Figure 4 is a front elevation partial view of a vehicle wheel equipped with the traction-aid device of Figure 1, embodying a second variation of traction-aid 1 0 member;
Figure 5 is a front elevation partial view of a vehicle wheel provided with the traction-aid device of Figure 1, embodying a third variation of traction-aidmember;
Figure 6 is a front elevation view of a vehicle wheel provided with the traction-aid device of Figure 1, embodying a fourth variation of traction-aid member;
Figure 7 is a side elevation view of the vehicle wheel equipped with the traction-aid device of Figure 6;
Figure 8 is a front elevation view of a vehicle wheel equipped with a traction-aid device according to a second embodiment of the invention, embodying a fifth variation of traction-aid member;
Figure 9 is a side elevation view of the vehicle wheel equipped with the traction-aid device of Figure 8;
Figure 10 is a front elevation view of a vehicle wheel equipped with a traction-aid device according to a third embodiment of the invention;
Figure 11 is a side elevation view of the vehicle wheel equipped with the traction-aid device of Figure 10;
Figure 12 is a front elevation view of a vehicle wheel equipped with a traction-aid device according to a fourth embodiment of the invention, embodyinga sixth variation of traction-aid member;
Figure 13 is a side elevation view of the vehicle wheel equipped with the traction-aid device of Figure 1 2;
Figure 14 is a side elevation view of the traction-aid device of Figure 12, embodying an eighth variation of traction-aid member;
Figure 15 is a side elevation view of the traction-aid device of Figure 12, 5 embodying a ninth variation of traction-aid member; and Figure 16 is a side elevation view of a bag used to store the traction-aid device of Figure 8.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Referring to Figures 1, 2 and 3, there are shown a traction-aid device for a vehicle wheel 2 having a tread 4 (best shown in Figure 2) and a given circumference, according to a first embodiment of the invention. The traction-aid device has an elongated traction-aid member 6 having a length exceeding half thecircumference of the vehicle wheel 2. The traction-aid member 6 is flexible and 15 has a rugged outer face and a pair of opposite ends 8, 10. The rugged outer face can be formed of any suitable elements that may be of any desired configuration that will provide good traction on slippery, snowy or muddy surfaces. In the illustrated case, the rugged outer face is provided by a series of plates 12 regularly spaced along two spaced-apart paralleled cables 14 extending between 20 the ends 8, 10 of the traction-aid member 6. Each plate 12 has opposite protruding flanges 16, 18 extending crosswise with respect to the cables 14 to provide a ground biting action to improve traction. Each flange 16, 18 has a pair of holes 20 through which the cables 14 pass respectively. Stopping elements 32 are secured to the cables 14 between the flanges 16, 18 of each plate 12 to 25 restrict displacement of the plates 12 along the cables 14. The flanges 16, 18 can be jagged to better bite into hard surfaces.
The traction-aid device also comprises a pair of L-shaped arms 22, 24 (best shown in Figure 3) each having a first end 26 adapted to extend transversely on the tread 4 of the vehicle wheel 2, and a second end 28 adapted to extend 30 alongside the vehicle wheel 2. The ends 8, 10 of the traction-aid member 6 are respectively attached to the first ends 26 of the elongated arms 22, 24. For this purpose, the first end 26 of each arm 22, 24 is provided with a pair of spaced apart holes 34, 36 (as best shown in Figure 2) located to extend substantially symmetrically with respect to a center of the tread 4 when the arms 22, 24 are clamped on the tread 4 of the vehicle wheel 2, and a roller 38 extending betweenthe holes 34, 36 to roll against and embed in the tread 4 of the vehicle wheel 2upon a clamping action exerted on the arms 22, 24. The cables 14 have ends passing through and sticking out of the holes 34, 36 respectively, the ends being provided with lock heads 40 bigger than the holes 34, 36 of the first ends 26, so that the cables 14 cannot disengage from the first ends 26. The plates 12 10 each preferably have an underside provided with cleats 42 (best shown in Figure 1) to provide friction between the plates 12 and the tread 4 of the vehicle wheel 2 in order that they will remain in place. The attachment of the traction-aid member 6 with the arms 22, 24 can be achieved with any suitable elements that may be of any desired configuration that will provide a sufficiently strong 15 coupling given the stress exerted thereon during use of the traction-aid device.
A clamping arrangement 30 is provided for pulling, as the traction-aid member 6 is mounted onto the tread 4 of the vehicle wheel 2 with the outer face of the traction-aid member 6 extending outwardly with respect to the vehicle wheel 2 while the arms 22, 24 are disposed alongside the vehicle wheel 2 with 20 the first ends 26 extending transversely on the tread 4 of the vehicle wheel 2 at each end 8,10 of the traction-aid member 6, the second ends 28 of the arms 22, 24 inwardly of the vehicle wheel 2, thereby causing the first ends 26 of the arms 22, 24 to firmly clamp on the tread 4 of the vehicle wheel 2 to maintain the traction-aid member 6 in place on the tread 4 of the vehicle wheel 2.
With the clamping arrangement 30 shown in Figures 1 and 2, the second ends 28 of the arms 22, 24 are telescopically mounted together. The second end 28 of one of the arms 22, 24 (in the illustrated case, the arm 24) has a longitudinal series of holes 54 (best shown in Figure 3). The clamping arrangement is provided by an elongated clamp member 56 having an end 30 pivotally connected to a selected one of the holes 54 in the second end 28 of the arm 24, and an opposite end. The clamp member 56 can be formed of a pair of parallel blades extending on opposite sides of the second end 28 of the arm 24 and connected thereto by means of a dowel 110, cutter pin or any other suitable fastener. A clamp lever 58 is pivotally connected to the second end 28 of the other arm 22. The opposite end of the clamp member 56 is pivotally connected 5 to the clamp lever 58 so that a pivoting of the clamp lever 58 towards the second end 28 of the arm 22, in the direction of arrow 60, pulls the clamp member 56 in the direction of arrow 62, thereby causing the second end 28 of the arm 24 to slide inside the second end 28 of the other arm 22. As a result, the first end 26 of the arms 22, 24 slide down along the tread 4 of the wheel 2 as 10 facilitated by the rollers 38. The ends 8, 10 of the traction-aid member 6 are thereby brought closer to each other, making the traction-aid device cling to the vehicle wheel 2 in one go. This action also draws both ends of the cables 14 towards the lower part of the wheel 2, which stabilizes all the plates 12 against the tread 4 of the wheel 2. The rollers 38 are slightly offset toward the tread 4 15 with respect to the main axis of the first ends 26 of the arms 22, 24 to keep the rollers 38 from being damaged when the wheel 2 turns. The rollers 38 have guiding brims 39 for contact with the tread 4 of the wheel 2 to preserve the alignment of the arms 22, 24 during their displacement on the tread 4. The traction-aid device is adaptable to various wheel diameters by simply selecting 20 the proper hole 54 for connecting the clamp member 56.
Referring to Figure 4, there is shown a variant of the traction-aid member, where the flanges 16, 18 of each plate 12 are spaced from each other with a space corresponding to a size of the stopping elements 32 therebetween. This configuration reduces the displacements of the plates 12 along the traction-aid 25 member 6, thereby stabilizing the behaviour of the plates 12 during use, which may be desirable in certain circumstances.
Referring to Figure 5, there is shown another variant of the traction-aid member 6, where a series of protruding blades 42 replace the plates 12 shown in Figure 1. The blades 42 are regularly spaced along the cables 14 and extend 30 crosswise with respect to the cables 14 to form the rugged outer face of the traction-aid member 6. The blades 42 preferably protrude on both sides of the traction-aid member 6, so that the side facing the vehicle wheel 2 provides frictional contact with the tread 4 of the vehicle wheel 2 to oppose against thedisplacement of the traction-aid member 6 on the tread 4. Longitudinally resistant sleeves 44 are preferably used to cover the cables 14 between the blades 42 to 5 conveniently restrict displacement and tilting of the blades 42 along the cables 14 while protecting them from external conditions.
Referring to Figures 6 and 7, there is shown another variant of the traction-aid member 6, formed of a strap 48 extending between the first ends 8, 10 of the arms 22, 24. Cleats 50 are distributed along the strap 48 to form the rugged10 outer face of the traction-aid member 6. The ends of the strap 48 are wrappedaround the first ends 26 of the arms 22, 24 and sewed together for attachment thereto. The cleats 50 can be riveted to the strap 48.
The traction-aid member 6 can be provided with side restraint members 46 extending chordally on both sides of the traction-aid member 6 to embrace the 15 vehicle wheel 2 when the traction-aid member 6 is mounted onto the tread 4 ofthe vehicle wheel 2. Such side restraint members 46 are especially useful to maintain the alignment of the traction-aid member at the center of the tread 4 for better traction efficiency.
Referring to Figures 8 and 9, there is shown a traction-aid device according 20 to a second embodiment of the invention. In this embodiment, the second ends 28 of the arms 22, 24 have toothed end portions 64 opposite to each other. The clamping arrangement 30 is formed of a guiding member 66 (best shown on Figure 9) to slidably guide the toothed end portions 64 in parallel with each other.
A toothed knob 68 is rotatably mounted between and engaged with the toothed 25 end portions 64, so that a rotation of the knob 68 drives the toothed end portions 64 in opposite parallel directions. A pawl 70 cooperatively engages the toothed knob 68 to prevent backward motion thereof. The knob 68 is preferably provided with a handle 72 for manual operation of the knob 68.
Referring to Figures 10 and 11, there is shown a traction-aid device 30 according to a third embodiment of the invention. In this embodiment, the clamping arrangement 30 is formed of a disk 74 adapted to extend about a center location alongside the vehicle wheel 2. The disk 74 has an outer face provided with two pairs of spaced apart guiding pins 76, 78 between which the second ends 28 of the arms 22, 24 pivotally extend respectively in generally radial directions with respect to the vehicle wheel 2 when the traction-aid 5 member 6 is mounted onto the tread 4 of the vehicle wheel 2. A toothed knob 80 is rotatably mounted onto the outer face of the disk 74 at a center thereof.
The second ends 28 of the arms 22, 24 are pivotally connected peripherally to the toothed knob 80 so that a rotation of the toothed knob draws and turns the second ends 28 of the arms 22, 24 inwardly with respect to the vehicle wheel 10 2, in the direction of the arrows 82. A pawl 84 is mounted onto the outer face of the disk 74 and cooperatively engages the toothed knob 80 to prevent backward motion thereof.
Referring to Figures 12 and 13, there is shown a traction-aid device according to a fourth embodiment of the invention. In this embodiment, the 15 clamping arrangement 30 is formed of two hinged levers 86, 88 adapted to extend about a center location alongside the vehicle wheel 2. The second ends 28 of the arms 22, 24 are pivotally connected to the levers 86, 88 respectively so that the second ends 28 of the arms 22, 24 extend in generally radial directions with respect to the vehicle wheel 2 when the traction-aid member 6 20 is mounted onto the tread 4 of the vehicle wheel 2. A ratchet mechanism formed of teeth 90 on the lever 88 and a pawl 92 on the lever 86 is used to prevent backward motion of the two levers 86, 88. The second end 28 of each arm 22, 24 is preferably made of a pair of telescopically mounted extendable portions 94, 96 and a spring 98 cooperatively associated with the extendable portions 94,96 25 for biasing the extendable portions 94,96 into a telescopically retracted position.
The second ends 28 of the arms 22, 24 can be made of elastic rubber straps to obtain a similar effect. The levers 86, 88 can be curved downwardly to leave more space below the arms 22, 24 for the user hands Figures 12 and 13 also show another variant of the traction-aid member 30 6, formed of a chain 52.
Referring to Figure 14, multiple chains 52 can be used to form the traction-aid member 6, instead of a single chain construction as shown in Figures 12 and 13. The chains 52 can be positioned in a crosswise arrangement to provide efficient traction. Other chain configurations can be used as well.
Referring to Figure 15, multiple straps 48 can be used to form the traction-5 aid member 6, instead of a single strap'construction as shown in Figures 6 and7. The straps 48 are preferably positioned in parallel with each other. Other strap configurations can be used as well.
The traction-aid member 6 can be formed using various materials, for example fabrics, metal (chains), rubber, plastic, etc., provided with various forms 1 0 of cleats.
As shown in Figures 10 to 16, the traction-aid device may be provided with an additional L-shaped arm 100 like the arms 22, 24. The first end 26 of the additional arm is attached to the traction-aid member 6 at an intermediate location with respect to the ends 8, 10 thereof. The second end 28 of the 15 additional arm 100 is connected to the clamping arrangement 30 so that the second end 28 of the additional arm 100 extends in a generally radial direction with respect to the vehicle wheel 2 when the traction-aid member 6 is mounted onto the tread 4 of the vehicle wheel 2. To accommodate various wheel diameters, the additional arm can be slidably connected to the clamping 20 arrangement 30 that is then provided with guiding rings 101 in which the arm 100 can slide, as shown in Figure 12. The arm 100 may be provided with a stop 103 to prevent its disengagement from the clamping arrangement 30.
As shown in Figure 13, the first end 26 of each arm 22, 24 (and optionally 100) may have a length exceeding a width of the tread 4 of the vehicle wheel 2.
25 In such a case, the first end 26 has a distal hooking flange 102 extending opposite the second end 28 of the arm 22, 24 (or 100), to engage an inner surface 104 of the vehicle wheel 2 when the traction-aid member 6 is mounted onto the tread 4 of the vehicle wheel 2.
As shown in Figure 11, the first end 26 of each arm 22, 24 (and optionally 30 100) may have a length inferior to a width of the tread 4 of the vehicle wheel 2.
In such a case, the first end 26 has a distal hooking flange 106 extending opposite the second end 28 of the arm 22, 24 (or 100), to frictionally engage the tread 4 of the vehicle wheel 2.
Referring to Figure 16, a bag 108 can conveniently be used to store the traction-aid device in a collapsed position, for example in the trunk of the vehicle.
While embodiments of this invention have been illustrated in the accompanying drawings and described above, it will be evident to those skilled in the art that changes and modifications may be made therein without departing from the essence of this invention. All such modifications or variations are believed to be within the scope of the invention as defined by the claims 10 appended hereto.
FIELD OF THE INVENTION
This invention relates in general to devices attachable to vehicle tires to improve their traction on slippery surfaces like those covered with snow or ice,and more particularly to a traction-aid device that can be readily and quickly mounted onto the wheels of a vehicle and provides continuous traction over a major part of the wheels.
BACKGROUND
One of the most popular types of traction-aid devices is probably the track-like traction-aid device that is partly slid under the driving wheel of the vehicle and is provided with an upper surface configured to provide a non-slippery surface for a wheel in rotation, and a toothed underside to bite into the slippery ground. Although this traction-aid device is normally easy to use, it only provides for a one-shot use and must be set back in place if more traction is required. The major drawbacks of the device are however that it is generally propelled by the rotating wheel, so that it can be lost in the snow, can damage the vehicle and even injure somebody in the trajectory of the ejected traction-aid device.
Another popular type of traction-aid device consists simply of an arrangement of chains wrapped around the tires. However, the installation of chains is rather difficult and is not adapted for occasional uses.
Known in the art are US patent Nos. 2,423,759 (Edwards); 2,586,049 (Jacobs); 2,729,261 (Rucker); 2,837,133 (Armenante et al.); 3,103,242 (Culp);
3,565,150 (Carr); 3,918,504 (Prokesch); 4,176,704 (Thorpe); 4,209,049 (Regensburger); 4,378,833 (Lindblad et al.); 4,836,258 (Ellis); and 4,862,936 (McDonough), that teach various types of traction-aid devices or the like, whichare intended to remain around the wheel during their use. However, none of the above documents provides a really practical, easy and safe to use, highly efficient and versatile traction-aid device. In most cases, the devices provide traction-aid elements peripherally disposed around the wheel and spaced apart from each other so the wheel is subjected to spinning strokes while turning, thereby creating stress on the vehicle transmission. In some cases, the devices are not easily removable and thus are rather intended for permanent use, like chains.
One object of the present invention is to provide a traction-aid device that is easy to install and safe to use, yet which provides an almost continuous traction-aid action around the wheel.
The traction-aid device according to the present invention comprises an 10 elongated traction-aid member having a length exceeding half the circumference of the vehicle wheel onto which the device is to be installed. The traction-aid member is flexible and has a rugged outer face and a pair of opposite ends. The traction-aid device also comprises a pair of L-shaped arms each having a first end adapted to extend transversely on the tread of the vehicle wheel, and a second 15 end adapted to extend alongside the vehicle wheel. The ends of the traction-aid member are respectively attached to the first ends of the arms. A clamping means is provided for pulling, as the traction-aid member is mounted onto the tread of the vehicle wheel with the outer face of the traction-aid member extending outwardly with respect to the vehicle wheel while the arms are 20 disposed alongside the vehicle wheel with the first ends extending transversely on the tread of the vehicle wheel at each end of the traction-aid member, the second ends of the arms inwardly of the vehicle wheel, thereby causing the firstends of the arms to firmly clamp on the tread of the vehicle wheel to maintain the traction-aid member in place on the tread of the vehicle wheel.
The almost continuous traction-aid action around the wheel is especially useful for a vehicle that must go up a hill, the traction-aid device remaining clamped on the vehicle wheel during the whole ascent.
BRIEF DESCRIPTION OF THE DRAWINGS
A detailed description of preferred embodiments of the invention will be given herein below with reference to the following drawings, in which like . CA 02217132 1997-10-23 numbers refer to like elements:
Figure 1 is a front elevation view of a vehicle wheel equipped with a traction-aid device according to a first embodiment of the invention, having a first variation of traction-aid member;
Figure 2 is a side elevation view of the vehicle wheel equipped with the traction-aid device of Figure 1;
Figure 3 is a top plan view of the traction-aid device shown in Figure 1;
Figure 4 is a front elevation partial view of a vehicle wheel equipped with the traction-aid device of Figure 1, embodying a second variation of traction-aid 1 0 member;
Figure 5 is a front elevation partial view of a vehicle wheel provided with the traction-aid device of Figure 1, embodying a third variation of traction-aidmember;
Figure 6 is a front elevation view of a vehicle wheel provided with the traction-aid device of Figure 1, embodying a fourth variation of traction-aid member;
Figure 7 is a side elevation view of the vehicle wheel equipped with the traction-aid device of Figure 6;
Figure 8 is a front elevation view of a vehicle wheel equipped with a traction-aid device according to a second embodiment of the invention, embodying a fifth variation of traction-aid member;
Figure 9 is a side elevation view of the vehicle wheel equipped with the traction-aid device of Figure 8;
Figure 10 is a front elevation view of a vehicle wheel equipped with a traction-aid device according to a third embodiment of the invention;
Figure 11 is a side elevation view of the vehicle wheel equipped with the traction-aid device of Figure 10;
Figure 12 is a front elevation view of a vehicle wheel equipped with a traction-aid device according to a fourth embodiment of the invention, embodyinga sixth variation of traction-aid member;
Figure 13 is a side elevation view of the vehicle wheel equipped with the traction-aid device of Figure 1 2;
Figure 14 is a side elevation view of the traction-aid device of Figure 12, embodying an eighth variation of traction-aid member;
Figure 15 is a side elevation view of the traction-aid device of Figure 12, 5 embodying a ninth variation of traction-aid member; and Figure 16 is a side elevation view of a bag used to store the traction-aid device of Figure 8.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Referring to Figures 1, 2 and 3, there are shown a traction-aid device for a vehicle wheel 2 having a tread 4 (best shown in Figure 2) and a given circumference, according to a first embodiment of the invention. The traction-aid device has an elongated traction-aid member 6 having a length exceeding half thecircumference of the vehicle wheel 2. The traction-aid member 6 is flexible and 15 has a rugged outer face and a pair of opposite ends 8, 10. The rugged outer face can be formed of any suitable elements that may be of any desired configuration that will provide good traction on slippery, snowy or muddy surfaces. In the illustrated case, the rugged outer face is provided by a series of plates 12 regularly spaced along two spaced-apart paralleled cables 14 extending between 20 the ends 8, 10 of the traction-aid member 6. Each plate 12 has opposite protruding flanges 16, 18 extending crosswise with respect to the cables 14 to provide a ground biting action to improve traction. Each flange 16, 18 has a pair of holes 20 through which the cables 14 pass respectively. Stopping elements 32 are secured to the cables 14 between the flanges 16, 18 of each plate 12 to 25 restrict displacement of the plates 12 along the cables 14. The flanges 16, 18 can be jagged to better bite into hard surfaces.
The traction-aid device also comprises a pair of L-shaped arms 22, 24 (best shown in Figure 3) each having a first end 26 adapted to extend transversely on the tread 4 of the vehicle wheel 2, and a second end 28 adapted to extend 30 alongside the vehicle wheel 2. The ends 8, 10 of the traction-aid member 6 are respectively attached to the first ends 26 of the elongated arms 22, 24. For this purpose, the first end 26 of each arm 22, 24 is provided with a pair of spaced apart holes 34, 36 (as best shown in Figure 2) located to extend substantially symmetrically with respect to a center of the tread 4 when the arms 22, 24 are clamped on the tread 4 of the vehicle wheel 2, and a roller 38 extending betweenthe holes 34, 36 to roll against and embed in the tread 4 of the vehicle wheel 2upon a clamping action exerted on the arms 22, 24. The cables 14 have ends passing through and sticking out of the holes 34, 36 respectively, the ends being provided with lock heads 40 bigger than the holes 34, 36 of the first ends 26, so that the cables 14 cannot disengage from the first ends 26. The plates 12 10 each preferably have an underside provided with cleats 42 (best shown in Figure 1) to provide friction between the plates 12 and the tread 4 of the vehicle wheel 2 in order that they will remain in place. The attachment of the traction-aid member 6 with the arms 22, 24 can be achieved with any suitable elements that may be of any desired configuration that will provide a sufficiently strong 15 coupling given the stress exerted thereon during use of the traction-aid device.
A clamping arrangement 30 is provided for pulling, as the traction-aid member 6 is mounted onto the tread 4 of the vehicle wheel 2 with the outer face of the traction-aid member 6 extending outwardly with respect to the vehicle wheel 2 while the arms 22, 24 are disposed alongside the vehicle wheel 2 with 20 the first ends 26 extending transversely on the tread 4 of the vehicle wheel 2 at each end 8,10 of the traction-aid member 6, the second ends 28 of the arms 22, 24 inwardly of the vehicle wheel 2, thereby causing the first ends 26 of the arms 22, 24 to firmly clamp on the tread 4 of the vehicle wheel 2 to maintain the traction-aid member 6 in place on the tread 4 of the vehicle wheel 2.
With the clamping arrangement 30 shown in Figures 1 and 2, the second ends 28 of the arms 22, 24 are telescopically mounted together. The second end 28 of one of the arms 22, 24 (in the illustrated case, the arm 24) has a longitudinal series of holes 54 (best shown in Figure 3). The clamping arrangement is provided by an elongated clamp member 56 having an end 30 pivotally connected to a selected one of the holes 54 in the second end 28 of the arm 24, and an opposite end. The clamp member 56 can be formed of a pair of parallel blades extending on opposite sides of the second end 28 of the arm 24 and connected thereto by means of a dowel 110, cutter pin or any other suitable fastener. A clamp lever 58 is pivotally connected to the second end 28 of the other arm 22. The opposite end of the clamp member 56 is pivotally connected 5 to the clamp lever 58 so that a pivoting of the clamp lever 58 towards the second end 28 of the arm 22, in the direction of arrow 60, pulls the clamp member 56 in the direction of arrow 62, thereby causing the second end 28 of the arm 24 to slide inside the second end 28 of the other arm 22. As a result, the first end 26 of the arms 22, 24 slide down along the tread 4 of the wheel 2 as 10 facilitated by the rollers 38. The ends 8, 10 of the traction-aid member 6 are thereby brought closer to each other, making the traction-aid device cling to the vehicle wheel 2 in one go. This action also draws both ends of the cables 14 towards the lower part of the wheel 2, which stabilizes all the plates 12 against the tread 4 of the wheel 2. The rollers 38 are slightly offset toward the tread 4 15 with respect to the main axis of the first ends 26 of the arms 22, 24 to keep the rollers 38 from being damaged when the wheel 2 turns. The rollers 38 have guiding brims 39 for contact with the tread 4 of the wheel 2 to preserve the alignment of the arms 22, 24 during their displacement on the tread 4. The traction-aid device is adaptable to various wheel diameters by simply selecting 20 the proper hole 54 for connecting the clamp member 56.
Referring to Figure 4, there is shown a variant of the traction-aid member, where the flanges 16, 18 of each plate 12 are spaced from each other with a space corresponding to a size of the stopping elements 32 therebetween. This configuration reduces the displacements of the plates 12 along the traction-aid 25 member 6, thereby stabilizing the behaviour of the plates 12 during use, which may be desirable in certain circumstances.
Referring to Figure 5, there is shown another variant of the traction-aid member 6, where a series of protruding blades 42 replace the plates 12 shown in Figure 1. The blades 42 are regularly spaced along the cables 14 and extend 30 crosswise with respect to the cables 14 to form the rugged outer face of the traction-aid member 6. The blades 42 preferably protrude on both sides of the traction-aid member 6, so that the side facing the vehicle wheel 2 provides frictional contact with the tread 4 of the vehicle wheel 2 to oppose against thedisplacement of the traction-aid member 6 on the tread 4. Longitudinally resistant sleeves 44 are preferably used to cover the cables 14 between the blades 42 to 5 conveniently restrict displacement and tilting of the blades 42 along the cables 14 while protecting them from external conditions.
Referring to Figures 6 and 7, there is shown another variant of the traction-aid member 6, formed of a strap 48 extending between the first ends 8, 10 of the arms 22, 24. Cleats 50 are distributed along the strap 48 to form the rugged10 outer face of the traction-aid member 6. The ends of the strap 48 are wrappedaround the first ends 26 of the arms 22, 24 and sewed together for attachment thereto. The cleats 50 can be riveted to the strap 48.
The traction-aid member 6 can be provided with side restraint members 46 extending chordally on both sides of the traction-aid member 6 to embrace the 15 vehicle wheel 2 when the traction-aid member 6 is mounted onto the tread 4 ofthe vehicle wheel 2. Such side restraint members 46 are especially useful to maintain the alignment of the traction-aid member at the center of the tread 4 for better traction efficiency.
Referring to Figures 8 and 9, there is shown a traction-aid device according 20 to a second embodiment of the invention. In this embodiment, the second ends 28 of the arms 22, 24 have toothed end portions 64 opposite to each other. The clamping arrangement 30 is formed of a guiding member 66 (best shown on Figure 9) to slidably guide the toothed end portions 64 in parallel with each other.
A toothed knob 68 is rotatably mounted between and engaged with the toothed 25 end portions 64, so that a rotation of the knob 68 drives the toothed end portions 64 in opposite parallel directions. A pawl 70 cooperatively engages the toothed knob 68 to prevent backward motion thereof. The knob 68 is preferably provided with a handle 72 for manual operation of the knob 68.
Referring to Figures 10 and 11, there is shown a traction-aid device 30 according to a third embodiment of the invention. In this embodiment, the clamping arrangement 30 is formed of a disk 74 adapted to extend about a center location alongside the vehicle wheel 2. The disk 74 has an outer face provided with two pairs of spaced apart guiding pins 76, 78 between which the second ends 28 of the arms 22, 24 pivotally extend respectively in generally radial directions with respect to the vehicle wheel 2 when the traction-aid 5 member 6 is mounted onto the tread 4 of the vehicle wheel 2. A toothed knob 80 is rotatably mounted onto the outer face of the disk 74 at a center thereof.
The second ends 28 of the arms 22, 24 are pivotally connected peripherally to the toothed knob 80 so that a rotation of the toothed knob draws and turns the second ends 28 of the arms 22, 24 inwardly with respect to the vehicle wheel 10 2, in the direction of the arrows 82. A pawl 84 is mounted onto the outer face of the disk 74 and cooperatively engages the toothed knob 80 to prevent backward motion thereof.
Referring to Figures 12 and 13, there is shown a traction-aid device according to a fourth embodiment of the invention. In this embodiment, the 15 clamping arrangement 30 is formed of two hinged levers 86, 88 adapted to extend about a center location alongside the vehicle wheel 2. The second ends 28 of the arms 22, 24 are pivotally connected to the levers 86, 88 respectively so that the second ends 28 of the arms 22, 24 extend in generally radial directions with respect to the vehicle wheel 2 when the traction-aid member 6 20 is mounted onto the tread 4 of the vehicle wheel 2. A ratchet mechanism formed of teeth 90 on the lever 88 and a pawl 92 on the lever 86 is used to prevent backward motion of the two levers 86, 88. The second end 28 of each arm 22, 24 is preferably made of a pair of telescopically mounted extendable portions 94, 96 and a spring 98 cooperatively associated with the extendable portions 94,96 25 for biasing the extendable portions 94,96 into a telescopically retracted position.
The second ends 28 of the arms 22, 24 can be made of elastic rubber straps to obtain a similar effect. The levers 86, 88 can be curved downwardly to leave more space below the arms 22, 24 for the user hands Figures 12 and 13 also show another variant of the traction-aid member 30 6, formed of a chain 52.
Referring to Figure 14, multiple chains 52 can be used to form the traction-aid member 6, instead of a single chain construction as shown in Figures 12 and 13. The chains 52 can be positioned in a crosswise arrangement to provide efficient traction. Other chain configurations can be used as well.
Referring to Figure 15, multiple straps 48 can be used to form the traction-5 aid member 6, instead of a single strap'construction as shown in Figures 6 and7. The straps 48 are preferably positioned in parallel with each other. Other strap configurations can be used as well.
The traction-aid member 6 can be formed using various materials, for example fabrics, metal (chains), rubber, plastic, etc., provided with various forms 1 0 of cleats.
As shown in Figures 10 to 16, the traction-aid device may be provided with an additional L-shaped arm 100 like the arms 22, 24. The first end 26 of the additional arm is attached to the traction-aid member 6 at an intermediate location with respect to the ends 8, 10 thereof. The second end 28 of the 15 additional arm 100 is connected to the clamping arrangement 30 so that the second end 28 of the additional arm 100 extends in a generally radial direction with respect to the vehicle wheel 2 when the traction-aid member 6 is mounted onto the tread 4 of the vehicle wheel 2. To accommodate various wheel diameters, the additional arm can be slidably connected to the clamping 20 arrangement 30 that is then provided with guiding rings 101 in which the arm 100 can slide, as shown in Figure 12. The arm 100 may be provided with a stop 103 to prevent its disengagement from the clamping arrangement 30.
As shown in Figure 13, the first end 26 of each arm 22, 24 (and optionally 100) may have a length exceeding a width of the tread 4 of the vehicle wheel 2.
25 In such a case, the first end 26 has a distal hooking flange 102 extending opposite the second end 28 of the arm 22, 24 (or 100), to engage an inner surface 104 of the vehicle wheel 2 when the traction-aid member 6 is mounted onto the tread 4 of the vehicle wheel 2.
As shown in Figure 11, the first end 26 of each arm 22, 24 (and optionally 30 100) may have a length inferior to a width of the tread 4 of the vehicle wheel 2.
In such a case, the first end 26 has a distal hooking flange 106 extending opposite the second end 28 of the arm 22, 24 (or 100), to frictionally engage the tread 4 of the vehicle wheel 2.
Referring to Figure 16, a bag 108 can conveniently be used to store the traction-aid device in a collapsed position, for example in the trunk of the vehicle.
While embodiments of this invention have been illustrated in the accompanying drawings and described above, it will be evident to those skilled in the art that changes and modifications may be made therein without departing from the essence of this invention. All such modifications or variations are believed to be within the scope of the invention as defined by the claims 10 appended hereto.
Claims (18)
1. A traction-aid device for a vehicle wheel having a tread and a given circumference, comprising:
an elongated traction-aid member having a length exceeding half the circumference of the vehicle wheel, the traction-aid member being flexible and having a rugged outer face and a pair of opposite ends;
a pair of L-shaped arms each having a first end adapted to extend transversely on the tread of the vehicle wheel, and a second end adapted to extend alongside the vehicle wheel, the ends of the traction-aid member being respectively attached to the first ends of the arms; and a clamping means for pulling, as the traction-aid member is mounted onto the tread of the vehicle wheel with the outer face of the traction-aid member extending outwardly with respect to the vehicle wheel while the arms are disposed alongside the vehicle wheel with the first ends extending transversely on the tread of the vehicle wheel at each end of the traction-aid member, the second ends of the arms inwardly of the vehicle wheel, thereby causing the first ends of the arms to firmly clamp on the tread of the vehicle wheel to maintain the traction-aid member in place on the tread of the vehicle wheel.
an elongated traction-aid member having a length exceeding half the circumference of the vehicle wheel, the traction-aid member being flexible and having a rugged outer face and a pair of opposite ends;
a pair of L-shaped arms each having a first end adapted to extend transversely on the tread of the vehicle wheel, and a second end adapted to extend alongside the vehicle wheel, the ends of the traction-aid member being respectively attached to the first ends of the arms; and a clamping means for pulling, as the traction-aid member is mounted onto the tread of the vehicle wheel with the outer face of the traction-aid member extending outwardly with respect to the vehicle wheel while the arms are disposed alongside the vehicle wheel with the first ends extending transversely on the tread of the vehicle wheel at each end of the traction-aid member, the second ends of the arms inwardly of the vehicle wheel, thereby causing the first ends of the arms to firmly clamp on the tread of the vehicle wheel to maintain the traction-aid member in place on the tread of the vehicle wheel.
2. A traction-aid device according to claim 1, wherein the traction-aid member comprises:
two spaced-apart paralleled cables extending between the ends of the traction-aid member; and a series of plates regularly spaced along the cables, each plate having opposite protruding flanges extending crosswise with respect to the cables to form the rugged outer face, the flanges each having a pair of holes through which the cables pass respectively; and stopping elements secured to the cables between the flanges of each plate to restrict displacement of the plates along the cables.
two spaced-apart paralleled cables extending between the ends of the traction-aid member; and a series of plates regularly spaced along the cables, each plate having opposite protruding flanges extending crosswise with respect to the cables to form the rugged outer face, the flanges each having a pair of holes through which the cables pass respectively; and stopping elements secured to the cables between the flanges of each plate to restrict displacement of the plates along the cables.
3. A traction-aid device according to claim 2, wherein:
the first end of each arm is provided with a pair of spaced apart holes located to extend substantially symmetrically with respect to a center of the tread when the arms are clamped on the tread of the vehicle wheel, and a roller extending between the holes to roll against the tread of the vehicle wheel;
the cables have ends passing through and sticking out of the holes respectively, the ends being provided with lock heads bigger than the holes of the first ends; and the plates each have an underside provided with cleats to provide friction between the plates and the tread of the vehicle wheel.
the first end of each arm is provided with a pair of spaced apart holes located to extend substantially symmetrically with respect to a center of the tread when the arms are clamped on the tread of the vehicle wheel, and a roller extending between the holes to roll against the tread of the vehicle wheel;
the cables have ends passing through and sticking out of the holes respectively, the ends being provided with lock heads bigger than the holes of the first ends; and the plates each have an underside provided with cleats to provide friction between the plates and the tread of the vehicle wheel.
4. A traction-aid device according to claim 2, wherein the flanges of each plate are spaced from each other with a space corresponding to a size of the stopping elements therebetween.
5. A traction-aid device according to claim 1, wherein:
the second ends of the arms are telescopically mounted together, the second end of one of the arms having a longitudinal series of holes;
and the clamping means comprises:
an elongated clamp member having an end pivotally connected to a selected one of the holes in the second end of said one of the arms, and an opposite end; and a clamp lever pivotally connected to the second end of the other arm, the opposite end of the clamp member being pivotally connected to the clamp lever so that a pivoting of the clamp lever towards the second end of said one of the arms pulls the clamp member, thereby causing the second end of said one of the arms to slide inside the second end of the other arm.
the second ends of the arms are telescopically mounted together, the second end of one of the arms having a longitudinal series of holes;
and the clamping means comprises:
an elongated clamp member having an end pivotally connected to a selected one of the holes in the second end of said one of the arms, and an opposite end; and a clamp lever pivotally connected to the second end of the other arm, the opposite end of the clamp member being pivotally connected to the clamp lever so that a pivoting of the clamp lever towards the second end of said one of the arms pulls the clamp member, thereby causing the second end of said one of the arms to slide inside the second end of the other arm.
6. A traction-aid device according to claim 5, wherein:
the first end of each arm is provided with a pair of spaced apart holes located to extend substantially symmetrically with respect to a center of the tread when the arms are clamped on the tread of the vehicle wheel, and a roller extending between the holes to roll against the tread of the vehicle wheel;
the cables have ends passing through and sticking out of the holes respectively, the ends being provided with lock heads bigger than the holes of the first ends; and the plates each have an underside provided with cleats to provide friction between the plates and the tread of the vehicle wheel.
the first end of each arm is provided with a pair of spaced apart holes located to extend substantially symmetrically with respect to a center of the tread when the arms are clamped on the tread of the vehicle wheel, and a roller extending between the holes to roll against the tread of the vehicle wheel;
the cables have ends passing through and sticking out of the holes respectively, the ends being provided with lock heads bigger than the holes of the first ends; and the plates each have an underside provided with cleats to provide friction between the plates and the tread of the vehicle wheel.
7. A traction-aid device according to claim 1, wherein the traction-aid member comprises:
two spaced-apart paralleled cables extending between the ends of the traction-aid member; and a series of protruding blades regularly spaced along the cables and extending crosswise with respect to the cables to form the rugged outer face; and longitudinally resistant sleeves covering the cables between the blades to restrict displacement and tilting of the blades along the cables.
two spaced-apart paralleled cables extending between the ends of the traction-aid member; and a series of protruding blades regularly spaced along the cables and extending crosswise with respect to the cables to form the rugged outer face; and longitudinally resistant sleeves covering the cables between the blades to restrict displacement and tilting of the blades along the cables.
8. A traction-aid device according to claim 1, wherein the traction-aid member is provided with side restraint members extending chordally on both sides thereof to embrace the vehicle wheel when the traction-aid member is mounted onto the tread of the vehicle wheel.
9. A traction-aid device according to claim 1, wherein the traction-aid member comprises:
at least one strap extending between the first ends of the arms; and cleats distributed along the strap to form the rugged outer face of the traction-aid member.
at least one strap extending between the first ends of the arms; and cleats distributed along the strap to form the rugged outer face of the traction-aid member.
10. A traction-aid according to claim 1, wherein:
the second ends of the arms have toothed end portions opposite to each other; and the clamping means comprises:
a guiding member to slidably guide the toothed end portions in parallel with each other;
a toothed knob rotatably mounted between and engaged with the toothed end portions so that a rotation of the toothed knob drives the toothed end portions in opposite parallel directions;
and a pawl cooperatively engaging the toothed knob to prevent backward motion thereof.
the second ends of the arms have toothed end portions opposite to each other; and the clamping means comprises:
a guiding member to slidably guide the toothed end portions in parallel with each other;
a toothed knob rotatably mounted between and engaged with the toothed end portions so that a rotation of the toothed knob drives the toothed end portions in opposite parallel directions;
and a pawl cooperatively engaging the toothed knob to prevent backward motion thereof.
11. A traction-aid device according to claim 1, wherein the clamping means comprises:
a disk adapted to extend about a center location alongside the vehicle wheel, the disk having an outer face provided with two pairs of spaced guiding pins between which the second ends of the arms pivotally extend respectively in generally radial directions with respect to the vehicle wheel when the traction-aid member is mounted onto the tread of the vehicle wheel;
a toothed knob rotatably mounted onto the outer face of the disk at a center thereof, the second ends of the arms being pivotally connected peripherally to the toothed knob so that a rotation of the toothed knob draws and turns the second ends of the arms inwardly with respect to the vehicle wheel; and a pawl mounted onto the outer face of the disk and cooperatively engaging the toothed knob to prevent backward motion thereof.
a disk adapted to extend about a center location alongside the vehicle wheel, the disk having an outer face provided with two pairs of spaced guiding pins between which the second ends of the arms pivotally extend respectively in generally radial directions with respect to the vehicle wheel when the traction-aid member is mounted onto the tread of the vehicle wheel;
a toothed knob rotatably mounted onto the outer face of the disk at a center thereof, the second ends of the arms being pivotally connected peripherally to the toothed knob so that a rotation of the toothed knob draws and turns the second ends of the arms inwardly with respect to the vehicle wheel; and a pawl mounted onto the outer face of the disk and cooperatively engaging the toothed knob to prevent backward motion thereof.
12. A traction-aid device according to claim 1, wherein the clamping means comprises:
two hinged levers adapted to extend about a center location alongside the vehicle wheel, the second ends of the arms being pivotally connected to the levers respectively so that the second ends of the arms extend in generally radial directions with respect to the vehicle wheel when the traction-aid member is mounted onto the tread of the vehicle wheel; and ratchet means operatively associated with the two levers for preventing backward motion of the two levers.
two hinged levers adapted to extend about a center location alongside the vehicle wheel, the second ends of the arms being pivotally connected to the levers respectively so that the second ends of the arms extend in generally radial directions with respect to the vehicle wheel when the traction-aid member is mounted onto the tread of the vehicle wheel; and ratchet means operatively associated with the two levers for preventing backward motion of the two levers.
13. A traction-aid member according to claim 12, wherein the second end of each arm comprises:
a pair of telescopically mounted extendable portions; and a spring means cooperatively associated with the extendable portions for biasing the extendable portions into a telescopically retracted position.
a pair of telescopically mounted extendable portions; and a spring means cooperatively associated with the extendable portions for biasing the extendable portions into a telescopically retracted position.
14. A traction-aid device according to claim 1, wherein the traction-aid member comprises at least one chain extending between the ends of the traction-aid member.
15. A traction-aid device according to claim 1, wherein the first end of each arm has:
a length exceeding a width of the tread of the vehicle wheel; and a distal hooking flange extending opposite the second end of the arm, to engage an inner surface of the vehicle wheel when the traction-aid member is mounted onto the tread of the vehicle wheel.
a length exceeding a width of the tread of the vehicle wheel; and a distal hooking flange extending opposite the second end of the arm, to engage an inner surface of the vehicle wheel when the traction-aid member is mounted onto the tread of the vehicle wheel.
16. A traction-aid device according to claim 1, wherein the first end of each arm has:
a length inferior to a width of the tread of the vehicle wheel; and a distal hooking flange extending opposite the second end of the arm, to frictionally engage the tread of the vehicle wheel.
a length inferior to a width of the tread of the vehicle wheel; and a distal hooking flange extending opposite the second end of the arm, to frictionally engage the tread of the vehicle wheel.
17. A traction-aid device according to claim 1, comprising an additional L-shaped arm having a first end adapted to extend transversely on the tread of the vehicle wheel, and a second end adapted to extend alongside the vehicle wheel, the first end of the additional arm being attached to the traction-aid member atan intermediate location with respect to the ends thereof, the second end of theadditional arm being connected to the clamping means so that the second end of the additional arm extends in a generally radial direction with respect to the vehicle wheel when the traction-aid member is mounted onto the tread of the vehicle wheel.
18. A traction-aid device according to claim 1, further comprising a bag for storing the traction-aid device in a collapsed position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2217132 CA2217132A1 (en) | 1997-10-23 | 1997-10-23 | Traction-aid device for a vehicle wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2217132 CA2217132A1 (en) | 1997-10-23 | 1997-10-23 | Traction-aid device for a vehicle wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2217132A1 true CA2217132A1 (en) | 1999-04-23 |
Family
ID=4161560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2217132 Abandoned CA2217132A1 (en) | 1997-10-23 | 1997-10-23 | Traction-aid device for a vehicle wheel |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2217132A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2489529A1 (en) * | 2011-02-16 | 2012-08-22 | Thule Sweden AB | Anti slip device for a wheel and a method for mounting the anti slip device |
-
1997
- 1997-10-23 CA CA 2217132 patent/CA2217132A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2489529A1 (en) * | 2011-02-16 | 2012-08-22 | Thule Sweden AB | Anti slip device for a wheel and a method for mounting the anti slip device |
| WO2012110609A1 (en) * | 2011-02-16 | 2012-08-23 | Thule Sweden Ab | Anti slip device for a wheel and a method for mounting the anti slip device |
| US8991454B2 (en) | 2011-02-16 | 2015-03-31 | Thule Sweden Ab | Anti slip device for a wheel and a method for mounting the anti slip device |
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