Patent US3717224A successfully refreshed from Google Patents.
US3717224A
Expired / Lapsed
US
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Two stage energy absorber
Assignee: Oregon Tool Inc
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Filing: 1971-11-15
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Granted: 1973-02-20
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Expires: 1991-11-15
Abstract
Abstract A DEVICE FOR ABSORBING ENERGY WHEREIN TWO MEMBERS ARE BOLTED TOGETHER, SAID DEVICE ADAPTED TO ABSORB ENERGY WHEN ONE OF THE MEMBERS RECEIVES AN IMPACT URGING SEPARATION OF THE MEMBERS. A RESILIENT PAD IN THE FORM OF A THICK ELASTOMERIC WASHER ON THE BOLT ABSORBS MINOR IMPACT AND A DIE THROUGH WHICH A DRAWABLE PORTION ON THE BOLT IS DRAWN ABSORBS SEVERE IMPACT. D R A W I N G
Inventors
- 👤 A Leach
- 👤 G Sandberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:52
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/12; F16F7/125; B; B60; B60R; B60R19/00; B60R19/02; B60R19/24; B60R19/26; B60R19/36; B60R19/28; B60R19/30; B60R19/34
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |