US3672422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle traction device
Assignee: Individual
•
Filing: 1970-10-09
•
Granted: 1972-06-27
•
Expires: 1990-10-09
Abstract
Abstract A traction device for use with automotive vehicles to assist in extrication of the vehicle from ice, snow, sand or mud, or the like. The traction device comprises a rigid or semi-rigid plate having an upper traction surface for engagement by the vehicle tire and having projecting members on the opposite surface adapted to bite or dig into the ice, snow, mud or sand in which the vehicle is stuck. Flexible means, such as chains, secured to the traction plate are provided for the purpose of firmly securing the traction mat to the vehicle tire at the interface with the material in which the vehicle is stuck. This causes the traction device to engage the tire temporarily but firmly for sufficient time to permit the traction plate to become firmly set into engagement with the ice, snow, mud or sand. Thereupon, further engagement between the moving tire tread and traction plate permits the vehicle to be readily extricated.
Inventors
- 👤 Frank J Greipel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:58
CPC Classifications
B; B60; B60B; B60B39/00; B60B39/02; B60B39/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
175 words
A vehicle traction device for automotive vehicles comprising: A. an elongated generally flat traction plate, said plate being at least semi-rigid and having 1. a top high-friction traction surface, and 2. a plurality of spaced apart gripping members projecting from the bottom surface of said plate, B. flexible linear wheel engaging means attached to said plate, said wheel engaging means comprising 1. a pair of lengths of chain each attached adjacent to the leading edge of said plate adjacent one side edge thereof, the combined length of said chains being at least great enough to extend around the interface between the wheel in conjunction with which the traction device is used and the surface on which the wheel is resting, and 2. a further relatively short transversely extending chain spaced adjacent to the leading edge of the traction plate, extending generally parallel to said edge, said further chain extending between and being connected at its ends to said first named two chains, and 3. connecting means for detachably securing said first named two chains together.
Claim 2
Dependent Claim
175 words
A vehicle traction device for automotive vehicles comprising: A. an elongated generally flat traction plate, said plate being at least semi-rigid and having 1. a top high-friction traction surface, and 2. a plurality of spaced apart gripping members projecting from the bottom surface of said plate, B. flexible linear wheel engaging means attached to said plate, said wheel engaging means comprising 1. a pair of lengths of chain each attached adjacent to the leading edge of said plate adjacent one side edge thereof, the combined length of said chains being at least great enough to extend around the interface between the wheel in conjunction with which the traction device is used and the surface on which the wheel is resting, and 2. a further relatively short transversely extending chain spaced adjacent to the leading edge of the traction plate, extending generally parallel to said edge, said further chain extending between and being connected at its ends to said first named two chains, and 3. connecting means for detachably securing said first named two chains together.
Claim 3
Dependent Claim
30 words
a plurality of spaced apart gripping members projecting from the bottom surface of said plate, B. flexible linear wheel engaging means attached to said plate, said wheel engaging means comprising
Claim 4
Dependent Claim
30 words
a plurality of spaced apart gripping members projecting from the bottom surface of said plate, B. flexible linear wheel engaging means attached to said plate, said wheel engaging means comprising
Claim 5
Dependent Claim
41 words
a further relatively short transversely extending chain spaced adjacent to the leading edge of the traction plate, extending generally parallel to said edge, said further chain extending between and being connected at its ends to said first named two chains, and
Claim 6
Dependent Claim
41 words
a further relatively short transversely extending chain spaced adjacent to the leading edge of the traction plate, extending generally parallel to said edge, said further chain extending between and being connected at its ends to said first named two chains, and
Claim 7
Dependent Claim
31 words
A vehicle traction device according to claim 1 further characterized in that said gripping members comprise a plurality of pointed spike-like elements disposed substantially uniformly over the area of said plate.
Claim 8
Dependent Claim
38 words
A vehicle traction device according to claim 1 further characterized in that said gripping members include at least one transverse downwardly depending blade-like member projecting from the bottom surface of the traction plate adjacent the trailing edge thereof.
Claim 9
Dependent Claim
11 words
connecting means for detachably securing said first named two chains together.
Claim 10
Dependent Claim
11 words
connecting means for detachably securing said first named two chains together.
Claim 11
Dependent Claim
46 words
A vehicle traction device according to claim 1 further characterized in that said connecting means include a ring-like member comprising part of one of said lengths of chain through which the free end of the other of said lengths of chain is adapted to be passed.
Claim 12
Dependent Claim
46 words
A vehicle traction device according to claim 4 further characterized in that a strong flexible cord member is secured to said other length of chain to assist in passing said length of chain through the ring-like member and to attach the traction device to the vehicle.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |