Patent US5336649A successfully refreshed from Google Patents.
US4598950A
Expired / Lapsed
US
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Tubular reinforcement in particular for a motor vehicle seat
Assignee: Compagnie Europeenne de Sieges pour Automobiles CESA
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Filing: 1984-02-29
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Granted: 1986-07-08
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Expires: 2004-02-29
Abstract
Abstract This reinforcement has at least one elongated slit 12 formed in the wall of the tube 1 located inside the reinforcement and therefore little exposed to impacts. The slit 12 is formed by a punching operation by urging back the material toward the interior of the tube and rolling it in the form of two curls in opposite directions. Upon impact, the reinforcement is progressively deformed in the region of the slit and thus absorbs the energy of the impact.
Inventors
- 👤 Francois Fourrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:52
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/24; B60N2/42; B60N2/427; B60N2/42709; B60N2/4207; B60N2/4214; B60N2/4221; B60N2/4249
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
A reinforcement, in particular for a motor vehicle seat, said reinforcement comprising an assembly of tubes defining an interior part of the reinforcement and, in a tube portion of said tubes which is exposed to impacts, means for rendering said tube portion more deformable in cross section when subjected to impact in a direction substantially toward said interior part of the reinforcement, said means consisting of at least one elongated, narrow and empty slit provided in a wall of said tube portion, extending longitudinally of said tube portion and facing said interior part of the reinforcement.
Claim 2
Dependent Claim
96 words
A reinforcement, in particular for a motor vehicle seat, said reinforcement comprising an assembly of tubes defining an interior part of the reinforcement and, in a tube portion of said tubes which is exposed to impacts, means for rendering said tube portion more deformable in cross section when subjected to impact in a direction substantially toward said interior part of the reinforcement, said means consisting of at least one elongated, narrow and empty slit provided in a wall of said tube portion, extending longitudinally of said tube portion and facing said interior part of the reinforcement.
Claim 3
Dependent Claim
16 words
A reinforcement according to claim 1, wherein said tube portion has a substantially circular cross-sectional shape.
Claim 4
Dependent Claim
34 words
A reinforcement according to claim 2, wherein said slit is formed by a punching operation so that the punched material is rolled back at each end of the slit longitudinally of said tube portion.
Claim 5
Dependent Claim
56 words
A reinforcement according to claim 1, for a seat having a seat back, the reinforcement comprising, in an upper part of the seat back, three of said slits which are provided in said tube portion in alignment with one another longitudinally of said tube portion and separated by very rigid unslit portions of said tube portion.
Claim 6
Dependent Claim
22 words
A reinforcement according to claim 4, wherein the unslit portions of said tube portion between the slits are longer than the slits.
References Cited (Backward Citations)
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US3147998A
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US3544164A
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Cited
US3747450A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-07 | 1990-01-06 | 1990-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-07 | 1994-01-06 | 1994-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-07 | 1998-01-06 | 1998-07-08 | $7700.00 | Window Closed / Lapsed |