US4061268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traction mat
Assignee: 3M Co
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Filing: 1975-12-01
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Granted: 1977-12-06
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Expires: 1995-12-01
Abstract
Abstract A mat useful, inter alia, to provide traction under the wheels of a vehicle comprises an open-mesh net of strands that are encased around their individual circumferences with a frictional coating that comprises a layer of binder material adhered to the strand and a monolayer of abrasive granules partially embedded in the layer of binder material.
Inventors
- 👤 Robert D. DeMaster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:01
CPC Classifications
B; B60; B60B; B60B39/00; B60B39/02; B60B39/12; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2927
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
119 words
A flexible traction mat capable of being wound into a small-diameter storage roll around a 5-millimeter-diameter mandrel without damage comprising an open-mesh net of strands that are encased around their individual circumferences with a frictional coating that comprises a layer of flexible elastic binder material adhered to the strands and a dense monolayer of abrasive granules partially embedded in, and partially protruding out of, the binder material so as to frictionally engage a surface against which the mat is laid, the area of the openings in the mat averaging at least 50 square millimeters, whereby the mat may be repeatedly used between an icy street surface and the wheels of a vehicle to increase the traction of the wheels.
Claim 2
Dependent Claim
119 words
A flexible traction mat capable of being wound into a small-diameter storage roll around a 5-millimeter-diameter mandrel without damage comprising an open-mesh net of strands that are encased around their individual circumferences with a frictional coating that comprises a layer of flexible elastic binder material adhered to the strands and a dense monolayer of abrasive granules partially embedded in, and partially protruding out of, the binder material so as to frictionally engage a surface against which the mat is laid, the area of the openings in the mat averaging at least 50 square millimeters, whereby the mat may be repeatedly used between an icy street surface and the wheels of a vehicle to increase the traction of the wheels.
Claim 3
Dependent Claim
13 words
A mat of claim 1 in which said binder material comprises epoxy resin.
Claim 4
Dependent Claim
18 words
A mat of claim 2 in which said binder material further includes a polymer having high amine functionality.
Claim 5
Dependent Claim
18 words
A mat of claim 1 in which the openings in the mat average at least 100 square millimeters.
Claim 6
Dependent Claim
14 words
A mat of claim 1 in which said strands comprise synthetic organic polymeric fibers.
Claim 7
Dependent Claim
21 words
A mat of claim 1 in which the average diameter of said abrasive granules is between about 400 and 2500 micrometers.
Claim 8
Dependent Claim
134 words
A flexible traction mat capable of being wound without damage into a compact storage roll around a 5-millimeter-diameter mandrel comprising an open-mesh net of strands that are encased around their individual circumferences with a frictional coating that comprises a layer of flexible elastic binder material adhered to the strands and a dense monolayer of abrasive granules partially embedded in, and partially protruding out of, the binder material so as to frictionally engage a surface against which the mat is laid, said binder material comprising an epoxy resin and a polymer having high amine functionality, and the area of the openings in the mat averaging at least 100 square millimeters, whereby the mat may be repeatedly used between an icy street surface and the wheels of a vehicle to increase the traction of the wheels.
Claim 9
Dependent Claim
134 words
A flexible traction mat capable of being wound without damage into a compact storage roll around a 5-millimeter-diameter mandrel comprising an open-mesh net of strands that are encased around their individual circumferences with a frictional coating that comprises a layer of flexible elastic binder material adhered to the strands and a dense monolayer of abrasive granules partially embedded in, and partially protruding out of, the binder material so as to frictionally engage a surface against which the mat is laid, said binder material comprising an epoxy resin and a polymer having high amine functionality, and the area of the openings in the mat averaging at least 100 square millimeters, whereby the mat may be repeatedly used between an icy street surface and the wheels of a vehicle to increase the traction of the wheels.
Claim 10
Independent Claim
97 words
A method for facilitating movement of a vehicle on a slippery surface comprising a) placing under one or more wheels of the vehicle a flexible traction mat that comprises an open-mesh net of strands that are encased around their individual circumferences with a frictional coating that comprises a layer of flexible elastic binder material adhered to the strands and a dense monolayer of abrasive granules partially embedded in, and partially protruding out of, the binder material so as to frictionally engage a surface against which the mat is laid, and then b) initiating movement of the vehicle.
Claim 11
Independent Claim
97 words
A method for facilitating movement of a vehicle on a slippery surface comprising a) placing under one or more wheels of the vehicle a flexible traction mat that comprises an open-mesh net of strands that are encased around their individual circumferences with a frictional coating that comprises a layer of flexible elastic binder material adhered to the strands and a dense monolayer of abrasive granules partially embedded in, and partially protruding out of, the binder material so as to frictionally engage a surface against which the mat is laid, and then b) initiating movement of the vehicle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |