Patent US3721433A successfully refreshed from Google Patents.
US3721433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deformable shock-absorbing guard
Assignee: COLLISION DEVICES Inc
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Filing: 1969-11-21
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Granted: 1973-03-20
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Expires: 1989-11-21
Abstract
Abstract ENERGY-ABSORBING CRASH OR COLLISION DEVICES FOR VEHICLES OR THE LIKE TO REDUCE SHOCK OF COLLISION BY UTILIZING ENERGYABSORBING COMPONENTS WHICH ARE FLEXIBLE AND COMPRESSIBLE AND/OR RIGID, FRANGIBLE AND CRUSHABLE, WHICH COMPONENTS MAY BE USED SINGLY OR IN COMBINATION, TO EFFECT GRADUAL DECELERATION UPON COLLISION. A RESILIENT OR RIGID BUT YIELDABLE HOUSING ENCASES THE ENERGY-ABSORBING COMPONENTS. D R A W I N G
Inventors
- 👤 L Sobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:42
CPC Classifications
B; B60; B60R; B60R19/00; B60R19/02; B60R19/44; B60R19/18; B60R2019/186; B60R2019/1873
Claims Analysis
Total Claims: 0
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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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |