CA1123472A - Antiskid traction device for vehicle wheel - Google Patents
Antiskid traction device for vehicle wheelInfo
- Publication number
- CA1123472A CA1123472A CA322,293A CA322293A CA1123472A CA 1123472 A CA1123472 A CA 1123472A CA 322293 A CA322293 A CA 322293A CA 1123472 A CA1123472 A CA 1123472A
- Authority
- CA
- Canada
- Prior art keywords
- section
- antiskid
- traction
- nodal points
- traction device
- 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.)
- Expired
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- Tires In General (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An antiskid traction device of the type which is engaged under a vehicle wheel to provide traction thereto when stuck in a rut. This traction device is characterized by being constructed to prevent sinking thereof into the snow or mud under the wheel, and to prevent throwing thereof by the wheel. This traction device comprises sections articulated one to another end to end, including a resilient tongue section adapted to act as a runner or ski under the vehicle wheel, by an intermediate section or portion engaging in the rut to provide traction therein, and by a traction section formed of expanded metal made wider than the tire to bear on the opposite sides of the rut thus minimizing sinking of the traction device. The expanded metal has nodal points selectively bent upward and downward to produce traction projections and wheel guide projections at the top and cleats at the bottom.
An antiskid traction device of the type which is engaged under a vehicle wheel to provide traction thereto when stuck in a rut. This traction device is characterized by being constructed to prevent sinking thereof into the snow or mud under the wheel, and to prevent throwing thereof by the wheel. This traction device comprises sections articulated one to another end to end, including a resilient tongue section adapted to act as a runner or ski under the vehicle wheel, by an intermediate section or portion engaging in the rut to provide traction therein, and by a traction section formed of expanded metal made wider than the tire to bear on the opposite sides of the rut thus minimizing sinking of the traction device. The expanded metal has nodal points selectively bent upward and downward to produce traction projections and wheel guide projections at the top and cleats at the bottom.
Description
1~1..2347~
This inuention relat~s to a traction d~vic~ o~ tha typs which is engaged under a traction whaal of a ushicls to prouide traction to thc wh~el.
The traction devic~s of the aboua type which haue been propossd so far are made of aither a sols rigid body or D~ rigid sections articulatsd end to end. In any case, the rigidity of such traction devices and othar construction features givs them so~e disadvantages~
In particular, such traction devicss which have been proposad so far are prone to sink relatively deep into ths snow or ~ud upon passags and action of the vehicls whsel thereon. This is due for instance to its construction, to the inclined position of engagsment with ths tira, and to the width thereof. Such traction devices of the rigid type are alsD prons to be thrown by the wheel and thus puncturing the gas tank if it does not sink as aforementioned~ to damage the tira, and to laterally shift and thus lose most if not all its efficisncy. ~esides~
such prior art traction dsuices are not particularly adaptsd to grip -~ ..
the surface and provide drag against throwing thereof by tha wheel in particular on ice.
It is a general object of the present invention to provide 20 an improved traction device of the abovs type. i ;
It is another ganeral objsct of tha present invention to -provide an antiskid traction device which is relatively not subjact to sinking into the snow or mud nor to being thrown by tha vehicle wh0el.
It is a further genaral objsct of the prssent invsntion to ~ ;~
prouide an antiskid traction devics which is easy to operatively engage ~ ~;
against tha tire of a wheel and which is adapted to slide like a runner or ski under the wheel to facilitats gripping o~ the wheel with the devics when the wheel Ytarts to rotate.
It i3 another gsneral object of the present invention to provide a traction device which is made of sections articulated ons to another end to end and including a resilient section to sngage ~ ~
This inuention relat~s to a traction d~vic~ o~ tha typs which is engaged under a traction whaal of a ushicls to prouide traction to thc wh~el.
The traction devic~s of the aboua type which haue been propossd so far are made of aither a sols rigid body or D~ rigid sections articulatsd end to end. In any case, the rigidity of such traction devices and othar construction features givs them so~e disadvantages~
In particular, such traction devicss which have been proposad so far are prone to sink relatively deep into ths snow or ~ud upon passags and action of the vehicls whsel thereon. This is due for instance to its construction, to the inclined position of engagsment with ths tira, and to the width thereof. Such traction devices of the rigid type are alsD prons to be thrown by the wheel and thus puncturing the gas tank if it does not sink as aforementioned~ to damage the tira, and to laterally shift and thus lose most if not all its efficisncy. ~esides~
such prior art traction dsuices are not particularly adaptsd to grip -~ ..
the surface and provide drag against throwing thereof by tha wheel in particular on ice.
It is a general object of the present invention to provide 20 an improved traction device of the abovs type. i ;
It is another ganeral objsct of tha present invention to -provide an antiskid traction device which is relatively not subjact to sinking into the snow or mud nor to being thrown by tha vehicle wh0el.
It is a further genaral objsct of the prssent invsntion to ~ ;~
prouide an antiskid traction devics which is easy to operatively engage ~ ~;
against tha tire of a wheel and which is adapted to slide like a runner or ski under the wheel to facilitats gripping o~ the wheel with the devics when the wheel Ytarts to rotate.
It i3 another gsneral object of the present invention to provide a traction device which is made of sections articulated ons to another end to end and including a resilient section to sngage ~ ~
- 2 - ~;
~ ~ ~t A W~;~, ~LJ.~9~ J j under the vehicle wheel and operatively curve circumferentially around ths tire of the wheel and thus enhance sliding thereof like a runner or ski under the wheel.
It is still another object o~ the present invention to provide a traction device which is particu~arly adapted to produce drag or to grip the supporting surface and thus reduce the possibility of the traction device being dangerously thrown by the vèhicle wheel.
It is a further object of the present invention to provi~e a traction device with outer lateral rows of upward projections to 10 laterally guide the device and oppose lateral shifting thereof from under the vehicle wheel.
The above and other objects and advantages of the present invention will be better understood with reference to the following detailed description of preferred embodiments thereof which are illus-trated, by way of examples, in the accompanying drawings, in which:
Figure 1 is a side view of a vehicle wheel and an antiskid traction device according to the present invention in operative position relative to the wheel;
Figure 2, shown on the second sheet of the drawings, is a plan 2û view of an antiskid traction device according to a first embodiment of the present invention; `~
Figure 3, shown on the second sheet of the dràwings, is a side elevation view as seen ~rom the bottom in Figure 2;
Figures 4, 5, and 6, shown on the first sheet of the drawings, ;;;
are cross-sectional views as seen along lines 4-4, 5-5, and 6-6 respect-ively in Figure 2;
Figures 7 and 7a, shown on the first sheet of the drawings, are longitudinal sections of two other embodiments of the tongue section of the antiski traction device of of Figure 2; ;~
Fqgures 8 and 9, shown on the first sheet of the drawings are a plan view and an elevation view respectively of a portion of an antiskid traction device according to a second embodiment of the invention; and B - 3 ~ i~
. . . ` .. :
,, ~ , . .
Figures 10 and 11, shown on the second sheet o~ the drawings, are an elevation view and a plan view respectively o~ a drag section which may be added to any embodiment of the present invention.
The antiskid traction device of Figures 1 to 6 inclusive comprises a tongue section 1, an intermediate antiskid traction section 2, and a wider antiski traction section 3.
The tongue section 1 is made of a strip of spring steel to resilisntly flex circumferentially around the ordinary tire T of a vehicle wheel W. The tongue section 1 has the longitudinal shape of a runner or ski including an upwardly-bent outer end 4. The tongue section is punched to form upward projections 5 which are inwardly directed to provide grip for the tire T, such that the rotation of tha wheel will make the tongue section 1 to slide under it drawing the remainder of ;~
the traction device with it. The tongue section 1 is substantially -narro~er than the ordinary vehicle tire to slide easily under it when manually pushed. Outer end 4, because it is upwardly bent, prevents tongue section 1 from being stuck into the snow or ice when manually ~
pushed. The outer snd of section 1 can be made higher, as shown at 4~ in ~-Figure 4~ in Figure 7, to also provide a tire grip as projections 5.
Said outer end can be simply bevelled, as shown at 4" in Figure 7a.
The intermediate antiskid traction section 2 comprises a strip of expanded metal having a width slightly less than the width of -an ordinary tire T to engage in the rut under the wheel. The inter- ~`
mediate antiskid traction section 2 is expanded longitudinally of the sections 1, 2, and 3 and defines filaments 6 interconnected by three `~
longitudinal rows of nodal points 7 and 8. The nodal points 7, of laterally-opposite outer rows of nodal points, are alternatively raised upward and downward with respect to the plane containing central nodal points 8, respectively forming upward projections to provide traction to the wheel and downward projections to provide traction in the snow or on ice. The inner end 9 of the tongue section 1 is looped around one filament of section 2 to form an articulation between these two sections. ~ ;
.
~ ~3~7?
The wider anti~kid traction s~ction 3 i9 also made of expanded metal and has a width exc~di~g the width of the vehicle whasl such that the opposite lataral sdgas will bsar Dn th~ oppositH
sidss of tha rut to minimize sinking oF the whole dsuice into the snow under ths vehicle wh0el~ Th0 section 3 i9 eXpandBd lOn9itlJdinally of the ssctions 1, 2 and 3 and definss filamsnts 6 interconnsctsd by fivs longitudinal rows of nodal points 7, ~ and 10. The latsrally opposits outer rows of nodal points 7 in section 3 are alt~rnatively raissd upward and downward with respect to tha two rows of nodal iO point~ 10 which are all at substantially the same laval~ Prsferably som~ nodal points 7, as indicated at 7~, are bent down further to provids better snow grip whan the vshicle wsight is smaller~ Most nodal points 8 of the central row in saction 3 lie in the plane of ~;
nodal points 10 but soms of the~ are raised forming longitudinally ~ ;
spaced upward projections 8I to provide better traction to tha wheel~
as shown in Figurs 4~ A metal clip 11 is clamped around one filamsnt 6 at the other end Df ths section 2 and the last nodal point 8 at one end of tha section 3 tD hings ths two sections 2 and 3 one to the other. Thus, the antiskid traction dsvice may bs convsniently transported in compact position with the sections 1, 2 and 3 folded bac~ one over another such as for instancs to use lsss space in the ~
trunk of an automobile. Clip 11 is prefsrably formad of a non rssilient ~ ;
metal strip wound on itself at least one turn and a half and then -~
flatten~d as shown in Figure 3, thereby avoiding welding of the ends of the strip. i;
In Figurss 8 and 9? there is shown an embodiment wnerein the intermediate section 2 and tongue section 1 are replaced by a resilient, preferably spring steel, tongue section 12 having a narrower portion integrally formed with 8 wider portion. The narrowar portion of the tongue section 12 is made exactly like the afored0scrioed - 5 - `
.
.
: ~`
tongue saction 1 including ths slements 4 and 5. Element 4 can ba replaced by elemant 41 or 4". Tha widsr portion o~ the tongue section 12 constitutes an enlargemHnt at tha innar end of the narrower portion and includes downw~rdly punchsd out elemarlts 13 ~orming cleats to grip in ths snow, ica, mud or the lika. The widor portion also includes upwardly punchsd out projections 5 to provide grip ~or the tire T of tha vehicla whael.
A mstal clip 11 clamps ths outer end of the wider portion of section 12 to the last nodal point ~ at one end of the saction 3 to provide articulation between the two sections.
A drag or anchor saction 14~ as shown in Figures 10 and 11 i8 pivotally attached by a bsnt portion 15 to the outer ~nd of the saction 3, is punched out to form downward projactions 16, and is `
downwardly bent at its trailing end 17 to grip into tha snow, ice or mud and thus produce a sufficient drag to prevant throwing of tha antiskid traction d~vic~ by the rotating vehicle wheel W when the lattar is about to move away from ths device.
:~' ~ ' '' : ~
, ,' . .
: ''' : .~., .... ~ .
- - ~ .. : . . : . ,., i " , .. , :
~ ~ ~t A W~;~, ~LJ.~9~ J j under the vehicle wheel and operatively curve circumferentially around ths tire of the wheel and thus enhance sliding thereof like a runner or ski under the wheel.
It is still another object o~ the present invention to provide a traction device which is particu~arly adapted to produce drag or to grip the supporting surface and thus reduce the possibility of the traction device being dangerously thrown by the vèhicle wheel.
It is a further object of the present invention to provi~e a traction device with outer lateral rows of upward projections to 10 laterally guide the device and oppose lateral shifting thereof from under the vehicle wheel.
The above and other objects and advantages of the present invention will be better understood with reference to the following detailed description of preferred embodiments thereof which are illus-trated, by way of examples, in the accompanying drawings, in which:
Figure 1 is a side view of a vehicle wheel and an antiskid traction device according to the present invention in operative position relative to the wheel;
Figure 2, shown on the second sheet of the drawings, is a plan 2û view of an antiskid traction device according to a first embodiment of the present invention; `~
Figure 3, shown on the second sheet of the dràwings, is a side elevation view as seen ~rom the bottom in Figure 2;
Figures 4, 5, and 6, shown on the first sheet of the drawings, ;;;
are cross-sectional views as seen along lines 4-4, 5-5, and 6-6 respect-ively in Figure 2;
Figures 7 and 7a, shown on the first sheet of the drawings, are longitudinal sections of two other embodiments of the tongue section of the antiski traction device of of Figure 2; ;~
Fqgures 8 and 9, shown on the first sheet of the drawings are a plan view and an elevation view respectively of a portion of an antiskid traction device according to a second embodiment of the invention; and B - 3 ~ i~
. . . ` .. :
,, ~ , . .
Figures 10 and 11, shown on the second sheet o~ the drawings, are an elevation view and a plan view respectively o~ a drag section which may be added to any embodiment of the present invention.
The antiskid traction device of Figures 1 to 6 inclusive comprises a tongue section 1, an intermediate antiskid traction section 2, and a wider antiski traction section 3.
The tongue section 1 is made of a strip of spring steel to resilisntly flex circumferentially around the ordinary tire T of a vehicle wheel W. The tongue section 1 has the longitudinal shape of a runner or ski including an upwardly-bent outer end 4. The tongue section is punched to form upward projections 5 which are inwardly directed to provide grip for the tire T, such that the rotation of tha wheel will make the tongue section 1 to slide under it drawing the remainder of ;~
the traction device with it. The tongue section 1 is substantially -narro~er than the ordinary vehicle tire to slide easily under it when manually pushed. Outer end 4, because it is upwardly bent, prevents tongue section 1 from being stuck into the snow or ice when manually ~
pushed. The outer snd of section 1 can be made higher, as shown at 4~ in ~-Figure 4~ in Figure 7, to also provide a tire grip as projections 5.
Said outer end can be simply bevelled, as shown at 4" in Figure 7a.
The intermediate antiskid traction section 2 comprises a strip of expanded metal having a width slightly less than the width of -an ordinary tire T to engage in the rut under the wheel. The inter- ~`
mediate antiskid traction section 2 is expanded longitudinally of the sections 1, 2, and 3 and defines filaments 6 interconnected by three `~
longitudinal rows of nodal points 7 and 8. The nodal points 7, of laterally-opposite outer rows of nodal points, are alternatively raised upward and downward with respect to the plane containing central nodal points 8, respectively forming upward projections to provide traction to the wheel and downward projections to provide traction in the snow or on ice. The inner end 9 of the tongue section 1 is looped around one filament of section 2 to form an articulation between these two sections. ~ ;
.
~ ~3~7?
The wider anti~kid traction s~ction 3 i9 also made of expanded metal and has a width exc~di~g the width of the vehicle whasl such that the opposite lataral sdgas will bsar Dn th~ oppositH
sidss of tha rut to minimize sinking oF the whole dsuice into the snow under ths vehicle wh0el~ Th0 section 3 i9 eXpandBd lOn9itlJdinally of the ssctions 1, 2 and 3 and definss filamsnts 6 interconnsctsd by fivs longitudinal rows of nodal points 7, ~ and 10. The latsrally opposits outer rows of nodal points 7 in section 3 are alt~rnatively raissd upward and downward with respect to tha two rows of nodal iO point~ 10 which are all at substantially the same laval~ Prsferably som~ nodal points 7, as indicated at 7~, are bent down further to provids better snow grip whan the vshicle wsight is smaller~ Most nodal points 8 of the central row in saction 3 lie in the plane of ~;
nodal points 10 but soms of the~ are raised forming longitudinally ~ ;
spaced upward projections 8I to provide better traction to tha wheel~
as shown in Figurs 4~ A metal clip 11 is clamped around one filamsnt 6 at the other end Df ths section 2 and the last nodal point 8 at one end of tha section 3 tD hings ths two sections 2 and 3 one to the other. Thus, the antiskid traction dsvice may bs convsniently transported in compact position with the sections 1, 2 and 3 folded bac~ one over another such as for instancs to use lsss space in the ~
trunk of an automobile. Clip 11 is prefsrably formad of a non rssilient ~ ;
metal strip wound on itself at least one turn and a half and then -~
flatten~d as shown in Figure 3, thereby avoiding welding of the ends of the strip. i;
In Figurss 8 and 9? there is shown an embodiment wnerein the intermediate section 2 and tongue section 1 are replaced by a resilient, preferably spring steel, tongue section 12 having a narrower portion integrally formed with 8 wider portion. The narrowar portion of the tongue section 12 is made exactly like the afored0scrioed - 5 - `
.
.
: ~`
tongue saction 1 including ths slements 4 and 5. Element 4 can ba replaced by elemant 41 or 4". Tha widsr portion o~ the tongue section 12 constitutes an enlargemHnt at tha innar end of the narrower portion and includes downw~rdly punchsd out elemarlts 13 ~orming cleats to grip in ths snow, ica, mud or the lika. The widor portion also includes upwardly punchsd out projections 5 to provide grip ~or the tire T of tha vehicla whael.
A mstal clip 11 clamps ths outer end of the wider portion of section 12 to the last nodal point ~ at one end of the saction 3 to provide articulation between the two sections.
A drag or anchor saction 14~ as shown in Figures 10 and 11 i8 pivotally attached by a bsnt portion 15 to the outer ~nd of the saction 3, is punched out to form downward projactions 16, and is `
downwardly bent at its trailing end 17 to grip into tha snow, ice or mud and thus produce a sufficient drag to prevant throwing of tha antiskid traction d~vic~ by the rotating vehicle wheel W when the lattar is about to move away from ths device.
:~' ~ ' '' : ~
, ,' . .
: ''' : .~., .... ~ .
- - ~ .. : . . : . ,., i " , .. , :
Claims (8)
OR PRIVILEGE IS CLAIMED, ARE DEFINED AS FOLLOWS;
1. An antiskid traction device for a vehicle wheel tire comprising first and second elongated, antiskid traction sections articulated end to end, and a tongue section protruding from the outer end of said second antiskid traction section, said three sections having a common longitudinal axis, said first and second antiskid traction sections having gripping means protruding from both main faces thereof, said first antiskid traction section being relatively wider than said tire, said second antiskid section having a width nearly equal to, but smaller than, the width of said tire and intermediate the width of said tongue section and of said first antiskid traction section, and interposed between the latter and said tongue section, said tongue section being a strip which is resilient, thin and flat both longitudinally and transversely, which is substantially narrower than said tire, has upward projections punched out therein for tractive engagement of said tire thereon, and being without projections at its underside, said tongue section having an upwardly-inclined leading edge and forms a runner element which can be slid under said tire, said tongue section longitudinally taking the circumferentially-curved shape of said tire and, when released, resiliently springing back to its longitudinally flat shape.
2. An antiskid traction device as defined in claim 1, wherein said first antiskid traction section is made of expanded metal with the expansion thereof made longitudinally of said section and defines filaments and nodal points interconnecting said filaments and forming up-and-down projections on the opposite faces of the first antiskid traction section, said projections constituting said gripping means.
3. An antiskid traction device as defined in claim 2, wherein said nodal points include a pair of laterally-opposite outer rows of nodal points and at least one laterally-intermediate row of nodal points, and the nodal points in each of said laterally-opposite rows project alternatively up and down along the corresponding rows defining downwardly-projecting traction cleats and upwardly projecting lateral wheel guides operatively guiding the antiskid traction device laterally upon engagement with the vehicle wheel.
4. An antiskid traction device as defined in claim 3, wherein the nodal points along said intermediate row alternatively project upwardly and form tractive projections operatively engaging the tire.
5. An antiskid traction device as defined in claim 4, wherein said nodal points comprise three laterally-intermediate rows of nodal points including said one intermediate row and two other rows on opposite sides respectively of said one intermediate row.
6. An antiskid traction device as defined in claim 1, 2 or 5, wherein said second antiskid section is made of expanded metal with the expansion thereof made longitudinally of said second section and defines filaments and nodal points interconnecting said filaments and including a pair of laterally-opposite outer rows of nodal points and one laterally-intermediate row of nodal points, and the nodal points in each of the laterally-opposite rows of said second antiskid traction section project alternatively up and down along the corresponding rows defining downwardly-projecting traction cleats and upwardly-projecting tractive projections operatively engaging the tire.
7. An antiskid traction device as defined in claim 1, 2 or 5, wherein said second antiskid traction section is integrally formed with said tongue section, and has punched-out projections operatively projecting up and down therefrom and constituting said gripping means.
8. An antiskid traction device as defined in claim 1, 2 or 5, further including a drag section articulated end to end to the free end of said first antiskid traction section and having downward projections operatively gripping in the supporting surface upon pulling action thereon by engagement of the vehicle wheel on said drag section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB849178 | 1978-03-03 | ||
| GB08491 | 1978-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1123472A true CA1123472A (en) | 1982-05-11 |
Family
ID=9853481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA322,293A Expired CA1123472A (en) | 1978-03-03 | 1979-02-26 | Antiskid traction device for vehicle wheel |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1123472A (en) |
-
1979
- 1979-02-26 CA CA322,293A patent/CA1123472A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |