US3130819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy absorber
Assignee: Hexcel Products Inc
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Filing: 1962-11-09
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Granted: 1964-04-28
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Expires: 1982-11-09
Abstract
No abstract record available.
Inventors
- 👤 Andrew C Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:24
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/373; F16F1/377; F16F1/371; F16F1/3713; F16F7/00; F16F7/12; F16F7/121; F16F2230/00; F16F2230/0052; F16F2230/007; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
AN ENERGY ABSORBER HAVING UNIFORM ENERGY ABSORPTION CHARACTERISTICS COMPRISING: HONEYCOMB CORE MEANS HAVING A PLURALITY OF PARALLEL ALIGNED CELLS, EACH EXTENDING THE LENGTH OF THE CORE AND BEING ADAPTED TO RESTRAIN COMPRESSION FORCE DIRECTED IN THE DIRECTION OF THE CELL AXIS; ENCASING MEANS CONNECTED TO SURROUND THE SIDE WALL OF SAID HONEYCOMB CORE COMPRISING TAPE MEANS HAVING NO APPRECIABLE STIFFNESS, BEING SUBSTANTIALLY NON-EXTENSIBLE, AND OF HIGH TENSILE STRENGTH, SAID TAPE MEANS HAVING HIGH LOOP STRENGTH AND LOW COLUMNAR STRENGTH AND BEING OPERABLE TO MAINTAIN THE PERIPHERAL DIMENSION OF SAID CORE SUBSTANTIALLY CONSTANT WITHOUT THE ADDITION OF APPRECIABLE COLUMNAR STRENGTH AS THE CORE IS CRUSHED BY COMPRESSION FORCES DIRECTED PARALLEL TO THE CELL AXIS.
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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |