US3308908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy absorber
Assignee: Lockheed Martin Corp
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Filing: 1965-01-11
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Granted: 1967-03-14
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Expires: 1985-01-11
Abstract
No abstract record available.
Inventors
- 👤 John P Bunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:17
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/12; F16F7/125; B; B60; B60P; B60P7/00; B60P7/06; B60P7/08; B60P7/0823; B61; B61D; B61D45/00; B61D45/008; B64; B64C; B64C25/00; B64C25/32; B64C25/58; B64C25/62; F16F2236/00; F16F2236/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49909; Y10T29/49913; Y10T29/49925; Y10T29/49927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
AN ENERGY ABSORBER COMPRISING A PLURALITY OF RIGID TUBES ASSEMBLED IN OVERLAPPED RELATION AND MATED TO EACH OTHER BY DEFORMATION IN THE WALLS THEREOF IN THE FORM OF HELIX, AT LEAST ONE OF SAID TUBES BEING UNCONNECTED FROM THE OTHER TUBES WHEREBY THE RELATIVE ROTATION THEREOF VARIES THE LENGTH OF OVERLAP AFORESAID AND BEING FABRICATED OF A MATERIAL HAVING A YIELD POINT BELOW THAT OF SAID OTHER TUBES, AND AN ATTACHMENT SECURED TO THE REMOTE OUTER ENDS OF SAID TUBES.
Claim 2
Dependent Claim
80 words
AN ENERGY ABSORBER COMPRISING A PLURALITY OF RIGID TUBES ASSEMBLED IN OVERLAPPED RELATION AND MATED TO EACH OTHER BY DEFORMATION IN THE WALLS THEREOF IN THE FORM OF HELIX, AT LEAST ONE OF SAID TUBES BEING UNCONNECTED FROM THE OTHER TUBES WHEREBY THE RELATIVE ROTATION THEREOF VARIES THE LENGTH OF OVERLAP AFORESAID AND BEING FABRICATED OF A MATERIAL HAVING A YIELD POINT BELOW THAT OF SAID OTHER TUBES, AND AN ATTACHMENT SECURED TO THE REMOTE OUTER ENDS OF SAID TUBES.
References Cited (Backward Citations)
US3181821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |