Patent US3664653A successfully refreshed from Google Patents.
US3664653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy absorber
Assignee: Individual
•
Filing: 1969-12-29
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Granted: 1972-05-23
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Expires: 1989-12-29
Abstract
Abstract THIS INVENTION PERTAINS TO AN ENERGY ABSORBER FOR USE ON ABUTEMENTS OR THE FRON OF VEHICLES TO ABSORB ENERGY WHEN THE VEHICLE ABUTS AGAINST ANOTHER VEHICLE OR A VEHICLE ABUTS AGAINST AN ABUTMENT, THE ABSORBER TO BE JOINED BY ONE OR MORE TIRE, FILLED WITH A LIQUID SUCH AS WATER AND WITH ONE OR MORE BLOW OUT PLUGS TO ALLOW THE LIQUID TO ESCAPE WHEN IMPACTED, THE ENDS OR RIM SIDES OF THE TIRES TO BE CLOSED AND CONNECTED BY FLEXIBLE OR COLLAPSIBLE MEANS.
Inventors
- 👤 Brooks Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:14
CPC Classifications
B; B60; B60R; B60R19/00; B60R19/02; B60R19/18; B60R19/20; E; E01; E01F; E01F15/00; E01F15/14; E01F15/145; E01F15/146; B60G; B60G2204/00; B60G2204/40; B60G2204/45; B60G2204/4504
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |