US3586131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic deformation-absorbing devices
Assignee: Renault SA
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Filing: 1969-03-10
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Granted: 1971-06-22
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Expires: 1989-03-10
Abstract
Abstract Mechanical energy absorbing device permitting absorbing a thrust by the plastic deformation of a member, characterized in that it comprises a metal plate having a central fastening point and a plurality of lateral-fastening points, said metal plate being so apertured that it can expand when subjected to a certain effort tending to move said central fastening point away from at least one of said lateral-fastening points.
Inventors
- 👤 Noel Le Mire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:37
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/12; F16F7/121; B; B62; B62D; B62D1/00; B62D1/02; B62D1/04; B62D1/11
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
85 words
A mechanical energy-absorbing device permitting absorbing a thrust by plastic deformation comprising a metal plate having a central-fastening point and a plurality of lateral-fastening points disposed about the periphery of said plate, serially formed in said plate as a concentrically repeated pattern, the slots of one series being angularly shifted in relation to those of the adjacent series, whereby said plate can deform when subjected to a certain effort tending to displace said centralfastening point with respect to at least one of said lateralfastening points.
Claim 2
Dependent Claim
85 words
A mechanical energy-absorbing device permitting absorbing a thrust by plastic deformation comprising a metal plate having a central-fastening point and a plurality of lateral-fastening points disposed about the periphery of said plate, serially formed in said plate as a concentrically repeated pattern, the slots of one series being angularly shifted in relation to those of the adjacent series, whereby said plate can deform when subjected to a certain effort tending to displace said centralfastening point with respect to at least one of said lateralfastening points.
Claim 3
Dependent Claim
22 words
A mechanical energy-absorbing device according to claim 1 wherein said slots are arcuate and said concentric pattern comprises circles of spaced slots.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |