US3949796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety tire
Assignee: Dow Silicones Corp
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Filing: 1973-07-31
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Granted: 1976-04-13
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Expires: 1993-07-31
Abstract
Abstract This is an elastomeric safety insert for a pneumatic tire assembly. The insert when installed has a toroidal configuration and has protuberances extending therefrom to space the body portion of the insert from the rim and tire casing, permitting the insert to dynamically balance itself when the tire is rotated.
Inventors
- 👤 Donald M. Bartos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:31
CPC Classifications
B; B60; B60C; B60C17/00; B60C17/04; B60C17/06; B60C17/045; B60C17/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A pneumatic tire assembly comprising a tire casing, having a wall, mounted on a wheel rim and an insert having a substantially solid toroidal body portion positioned within the casing in spaced circumscribed relation to the rim, the body portion having a series of rod like collapsible protrusions extending from at least three sides, one of which is directed at the rim, spacing the body portion from the casing and the insert freely rotatable within the casing and the body portion having a thickness substantially greater than the thickness of the casing wall.
Claim 2
Dependent Claim
93 words
A pneumatic tire assembly comprising a tire casing, having a wall, mounted on a wheel rim and an insert having a substantially solid toroidal body portion positioned within the casing in spaced circumscribed relation to the rim, the body portion having a series of rod like collapsible protrusions extending from at least three sides, one of which is directed at the rim, spacing the body portion from the casing and the insert freely rotatable within the casing and the body portion having a thickness substantially greater than the thickness of the casing wall.
References Cited (Backward Citations)
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Cited
US2242788A
Cited
US3367381A
Cited
US3509928A
Cited
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Cited
US3857427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |