US3861637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension device for a vehicle seat and especially a tractor seat
Assignee: Sable Freres International SA
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Filing: 1973-05-25
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Granted: 1975-01-21
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Expires: 1993-05-25
Abstract
Abstract The suspension device essentially comprises elastic means having a vertical action for the suspension proper of the seat and disposed between a first vertically movable member and a supporting element, first means for adjusting the flexibility of the suspension by modifying the vertical distance under no load between the movable member and the supporting element, a second vertically movable member which directly supports the seat and is rigidly fixed thereto, second means for adjusting the height of the seat by modifying the relative vertical position of the first and second movable members, and third means for coupling the first and second movable members on completion of adjustment.
Inventors
- 👤 Jacques Albert Huo Delongchamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:44
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/50; B60N2/504; B60N2/505; B60N2/506; B60N2/509; B60N2/54; B60N2/544
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
199 words
A vehicle seat structute for an agricultural vehicle, or the like, comprising a substantially L-shaped supporting frame, a mounting frame for mounting said supporting frame on the vehicle, guiding means for directly guiding said supporting frame with respect to said mounting frame for substantially vertical movement of said supporting frame, an intermediate seat-height adjusting means movably mounted within said mounting frame, means mounting said adjusting means for vertical movement within said mounting frame, said adjusting means having a first part fixed to said supporting frame and a second part movable vertically relative to said first part, manually operable locking means for locking said first part of said adjusting means to said second part at any selected position, initial tension-adjusting means comprising an initial supporting part operatively connected to said mounting frame and an initial tension adjusting part vertically movable with respect to said supporting part, manually operable control means for vertically adjusting said adjusting part with respect to said initial tension supporting part, and resilient elongated suspension means vertically located between said supporting frame and said mounting frame and having their ends attached respectively to said initial adjusting part and to said second part of said seat-height adjusting means.
Claim 2
Dependent Claim
199 words
A vehicle seat structute for an agricultural vehicle, or the like, comprising a substantially L-shaped supporting frame, a mounting frame for mounting said supporting frame on the vehicle, guiding means for directly guiding said supporting frame with respect to said mounting frame for substantially vertical movement of said supporting frame, an intermediate seat-height adjusting means movably mounted within said mounting frame, means mounting said adjusting means for vertical movement within said mounting frame, said adjusting means having a first part fixed to said supporting frame and a second part movable vertically relative to said first part, manually operable locking means for locking said first part of said adjusting means to said second part at any selected position, initial tension-adjusting means comprising an initial supporting part operatively connected to said mounting frame and an initial tension adjusting part vertically movable with respect to said supporting part, manually operable control means for vertically adjusting said adjusting part with respect to said initial tension supporting part, and resilient elongated suspension means vertically located between said supporting frame and said mounting frame and having their ends attached respectively to said initial adjusting part and to said second part of said seat-height adjusting means.
Claim 3
Dependent Claim
71 words
A suspension device according to claim 1, further comprising resilient restoring means operatively connected at one end to said first part of said seat-height adjusting means and at the other end to said second part of said seat-height adjusting means, said restoring means having a restoring force greater than the weight of said supporting frame for urging said supporting frame upwardly with respect to said second part of said adjusting means.
Claim 4
Dependent Claim
56 words
A suspension device according to claim 2, wherein said guide means comprises a roller fixed to said supporting frame, a fixed concave track supported by said mounting frame on which said roller is guided, and a rocking lever having one end pivotally connected to said mounting frame and one end pivotally connected to said supporting frame.
References Cited (Backward Citations)
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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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |