US3295798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Landing gear
Assignee: Individual
•
Filing: 1964-11-10
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Granted: 1967-01-03
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Expires: 1984-11-10
Abstract
No abstract record available.
Inventors
- 👤 James E Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:03
CPC Classifications
B; B64; B64C; B64C29/00; B64C29/0091; B64G; B64G1/00; B64G1/22; B64G1/62; B64G1/625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
AN ENERGY-ABSORBING DEVICE COMPRISING: (A) A SUPPORT HOUSING ADAPTED FOR MOUNTING ON A VEHICLE; (B) A TUBULAR CYLINDER SLIDABLY DISPOSED IN SAID SUPPORT HOUSING FOR EXTENDING AND RETRACTING MOTION; (C) A PISTON TELESCOPICALLY RECEIVED IN SAID CYLINDER WITH ONE END OF SAID PISTON BEING WITHIN SAID CYLINDER AND THE OTHER END OF SAID PISTON PROJECTING FROM ONE END OF SAID CYLINDER; (D) A YIELDABLE FOOT PORTION CARRIED BY SAID OTHER END OF SAID PISTON; (E) A CRUSHABLE ENERGY-ABSORBING MATERIAL DISPOSED WITHIN SAID FOOT PORTION AND WITHIN SAID CYLINDER; (F) SAID CRUSHABLE MATERIAL WITHIN SAID CYLINDER BEING CONTIGUOUS WITH SAID ONE END OF SAID PISTON WHEREBY RETRACTIVE SLIDING OF SAID PISTON WITHIN SAID CYLINDER WILL RESULT IN A CRUSHING OF SOME OF SAID MATERIAL; (G) A SWITCH ASSOCIATED WITH SAID FOOT PORTION RESPONSIVE TO PRESSURE CONTACT OF SAID FOOT PORTION WITH A SURFACE; (H) MEANS RESPONSIVE TO SAID SWITCH FOR LOCKING SAID CYLINDER AGAINST RETRACTIVE SLIDING WITHIN SAID SUPPORT HOUSING.
Claim 2
Dependent Claim
159 words
AN ENERGY-ABSORBING DEVICE COMPRISING: (A) A SUPPORT HOUSING ADAPTED FOR MOUNTING ON A VEHICLE; (B) A TUBULAR CYLINDER SLIDABLY DISPOSED IN SAID SUPPORT HOUSING FOR EXTENDING AND RETRACTING MOTION; (C) A PISTON TELESCOPICALLY RECEIVED IN SAID CYLINDER WITH ONE END OF SAID PISTON BEING WITHIN SAID CYLINDER AND THE OTHER END OF SAID PISTON PROJECTING FROM ONE END OF SAID CYLINDER; (D) A YIELDABLE FOOT PORTION CARRIED BY SAID OTHER END OF SAID PISTON; (E) A CRUSHABLE ENERGY-ABSORBING MATERIAL DISPOSED WITHIN SAID FOOT PORTION AND WITHIN SAID CYLINDER; (F) SAID CRUSHABLE MATERIAL WITHIN SAID CYLINDER BEING CONTIGUOUS WITH SAID ONE END OF SAID PISTON WHEREBY RETRACTIVE SLIDING OF SAID PISTON WITHIN SAID CYLINDER WILL RESULT IN A CRUSHING OF SOME OF SAID MATERIAL; (G) A SWITCH ASSOCIATED WITH SAID FOOT PORTION RESPONSIVE TO PRESSURE CONTACT OF SAID FOOT PORTION WITH A SURFACE; (H) MEANS RESPONSIVE TO SAID SWITCH FOR LOCKING SAID CYLINDER AGAINST RETRACTIVE SLIDING WITHIN SAID SUPPORT HOUSING.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |