Patent US4281791A successfully refreshed from Google Patents.
US4281791A
Expired / Lapsed
US
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Traction aid device
Assignee: Individual
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Filing: 1979-12-10
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Granted: 1981-08-04
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Expires: 1999-12-10
Abstract
Abstract A motor vehicle traction aid device including a plastic bag containing a sand mixture for insertion under a tire on a drive wheel of a motor vehicle for improving traction on ice, snow or the like. The bag is partially filled with the sand material and includes a foam or sponge rubber tab on one side. The bag is inserted between the driving surface and the tire of the motor vehicle such that the tab engages the tire. Rotation of the wheel toward the driving surface causes the tire to engage the tab, drawing the bag and the sand material under the tire in a rolling action, bursting the bag and dispensing the sand beneath the tire.
Inventors
- 👤 Cecil F. Schaaf
- 👤 Craig R. Schaaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:28
CPC Classifications
B; B60; B60B; B60B39/00; B60B39/02; B60B39/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
103 words
A traction aid device for improving the traction of a drive wheel of a motor vehicle on a low traction driving surface such as ice comprising: a bag, coarse granular material only partially filling the bag, and a compressible tab attached along one side of the bag whereby, upon the insertion of the bag between the wheel and the driving surface with the tab engaging the wheel, rotation of the wheel toward the driving surface engages the tab and draws the bag and granular material under the wheel in a rolling action, bursting the bag and dispensing the granular material beneath the wheel.
Claim 2
Dependent Claim
103 words
A traction aid device for improving the traction of a drive wheel of a motor vehicle on a low traction driving surface such as ice comprising: a bag, coarse granular material only partially filling the bag, and a compressible tab attached along one side of the bag whereby, upon the insertion of the bag between the wheel and the driving surface with the tab engaging the wheel, rotation of the wheel toward the driving surface engages the tab and draws the bag and granular material under the wheel in a rolling action, bursting the bag and dispensing the granular material beneath the wheel.
Claim 3
Dependent Claim
18 words
The traction aid device of claim 1 in which the bag is constructed of a thin plastic material.
Claim 4
Dependent Claim
29 words
The traction aid device of claim 1 in which the granular material comprises lime mixed with sand so as to form a mortar-like substance in the presence of water.
Claim 5
Dependent Claim
18 words
The traction aid device of claim 1 in which the tab is constructed of a foam rubber material.
Claim 6
Dependent Claim
18 words
The traction aid device of claim 1 in which the tab is constructed of a sponge rubber material.
Claim 7
Dependent Claim
26 words
The traction aid device of either of claims 4 or 5 in which the tab includes an adhesive backing for attaching the tab to the bag.
Claim 8
Dependent Claim
55 words
The traction aid device of claim 2 in which the tab is along one side of the bag nearest a first end, and in which, on the opposite end of the bag from the first end, the bag includes a closure for an opening through which the granular material has been inserted into the bag.
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) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |