Patent US4223835A successfully refreshed from Google Patents.
US4223835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traction pad
Assignee: Individual
•
Filing: 1978-10-23
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Granted: 1980-09-23
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Expires: 1998-10-23
Abstract
Abstract A traction pad for use with vehicle tires on slippery road surfaces, the pad having a rectangular plastic mat portion with one end provided with a wedge shape. The tire facing surface of the mat, including the wedge portion, is provided with groups of substantially conically shaped projections. The opposite road facing surface of the mat portion is provided with like projections, with the wedge portion of the road facing surface being provided with longitudinal ribs. The size of the conical projections within each group is uniform, with one group size being larger than an adjacent group, the larger group being further from the wedge portion. A cooperating metallic starter plate is disposed on the wedge portions, being bent over the one end so that the conical projections on the wedge portion of the tire facing surface extend into openings in one side of the plate, and the ribs on the wedge portion of the road facing surface extend between grooves in the other side of the plate. Preferably, the plate is secured to the mat portion by rivets.
Inventors
- 👤 Michael Witt
- 👤 Seymour Brawer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:24
CPC Classifications
B; B60; B60B; B60B39/00; B60B39/02; B60B39/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
180 words
A traction pad for use with vehicle tires disposed on a slippery road surface, said pad comprising: a substantially rectangular mat having a tire facing surface on one side and a road facing surface on an opposite side; an end portion provided at one longitudinal end of said mat having said tire facing and road facing surfaces thereon; friction means disposed on said tire and road facing surfaces of said mat for engaging said mat between a tire and the slippery road surface without relative slippage therebetween; said friction means extending across said tire facing surface of said end portion but ending short of said road facing surface of said end portion; guiding means disposed on said road facing surface of said end portion for direction control of the tire during movement of the tire onto said end portion; a metal plate covering said tire and road facing surfaces of said end portion; and said plate being provided with finger-like portions for cooperating with said guiding means, said guiding means including longitudinally extending, projecting ribs disposed between said finger-like portions.
Claim 2
Dependent Claim
180 words
A traction pad for use with vehicle tires disposed on a slippery road surface, said pad comprising: a substantially rectangular mat having a tire facing surface on one side and a road facing surface on an opposite side; an end portion provided at one longitudinal end of said mat having said tire facing and road facing surfaces thereon; friction means disposed on said tire and road facing surfaces of said mat for engaging said mat between a tire and the slippery road surface without relative slippage therebetween; said friction means extending across said tire facing surface of said end portion but ending short of said road facing surface of said end portion; guiding means disposed on said road facing surface of said end portion for direction control of the tire during movement of the tire onto said end portion; a metal plate covering said tire and road facing surfaces of said end portion; and said plate being provided with finger-like portions for cooperating with said guiding means, said guiding means including longitudinally extending, projecting ribs disposed between said finger-like portions.
Claim 3
Dependent Claim
17 words
A traction pad as claimed in claim 1, wherein said friction means are substantially conically shaped projections.
Claim 4
Dependent Claim
16 words
A traction pad as claimed in claim 2, wherein said guiding means are projecting tapered ribs.
Claim 5
Dependent Claim
20 words
A traction pad as claimed in claim 2, wherein said conically shaped projections are disposed in a longitudinally staggered relationship.
Claim 6
Dependent Claim
48 words
A traction pad as claimed in claim 4, wherein said conically shaped projections are disposed in groups of uniform dimension, said dimension of the conically shaped projections of one group being greater than an adjacent group as the distance of said one group increases from said end portion.
Claim 7
Dependent Claim
21 words
A traction pad as claimed in claim 1, wherein said mat is a one piece construction fabricated from a plastic material.
Claim 8
Dependent Claim
19 words
A traction pad as claimed in claim 1, including fastening means for securing said plate to said end portion.
Claim 9
Dependent Claim
46 words
A traction pad as claimed in claim 1, wherein said plate is provided with a multiplicity of projecting circular hollow ridges, said friction means on said tire facing surface of said end portion being substantially conically shaped projections, said projections being disposed in said hollow ridges.
Claim 10
Dependent Claim
20 words
A traction pad as claimed in claim 1, wherein said plate and said end portion provide a wedge shaped configuration.
References Cited (Backward Citations)
US1375666A
Cited
US1400478A
Cited
US1425101A
Cited
US2486911A
Cited
US2975977A
Cited
US3202358A
Cited
US3630440A
Cited
US3836075A
Cited
US3910491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |