US3638896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorbing device for a boat seat
Assignee: Xylem Water Solutions Zelienople LLC
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Filing: 1970-05-19
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Granted: 1972-02-01
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Expires: 1990-05-19
Abstract
Abstract A shock absorbing device for a boat seat supported by a link system to move vertically downwardly against the action of spring means and damping means cooperating with the link system to damp upward and downward movements of the seat.
Inventors
- 👤 John Werner Lindstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:15
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/50; B60N2/502; A; A47; A47C; A47C7/00; A47C7/02; A47C7/14; B60N2/505; B60N2/506; B60N2/54; B60N2/544; B60N2/546
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
A shock absorbing device for a boat seat supported by means of a linkage system having transverse pivot axes and adapted to permit vertical downward movements of the seat against the action of a pressure spring means located between the seat frame and a base supporting the linkage system, characterized in that the linkage system comprises a forward pair of parallel spaced link arms pivotable at their lower ends about a first common pivot axis and a rearward pair of parallel spaced link arms pivotable at their lower ends about a second common pivot axis, the lower ends of the link arms at one side of the seat being interconnected by a synchronizing link member so as to provide synchronous movements up and down of the forward and the rearward pairs of link arms, the upper ends of the link arms being hingedly connected to the seat frame through link members and the upper end portions of the link arms which are connected through link rods with the ends of a lever arm which is journaled between its ends on a supporting member secured to the seat frame.
Claim 2
Dependent Claim
188 words
A shock absorbing device for a boat seat supported by means of a linkage system having transverse pivot axes and adapted to permit vertical downward movements of the seat against the action of a pressure spring means located between the seat frame and a base supporting the linkage system, characterized in that the linkage system comprises a forward pair of parallel spaced link arms pivotable at their lower ends about a first common pivot axis and a rearward pair of parallel spaced link arms pivotable at their lower ends about a second common pivot axis, the lower ends of the link arms at one side of the seat being interconnected by a synchronizing link member so as to provide synchronous movements up and down of the forward and the rearward pairs of link arms, the upper ends of the link arms being hingedly connected to the seat frame through link members and the upper end portions of the link arms which are connected through link rods with the ends of a lever arm which is journaled between its ends on a supporting member secured to the seat frame.
Claim 3
Dependent Claim
92 words
A device according to claim 1, characterized in that upward movements of the two link arms at one side of the seat are damped by means of two elastic bushings mounted on a substantially horizontal rod, each bushing being located between two washers on the rod, the outer washer being mounted on the adjacent link arm and having a center hole to permit the rod to slide freely therein, whereas the other washer is adjustable to any desired position along the rod to obtain any desired initial compression of the elastic bushings.
Claim 4
Dependent Claim
80 words
A device accoRding to claim 2, characterized in that each of the two link arms at one side of the seat pivotally support a buffer arm extending downwardly and having its free lower end portion resting on an elastic buffer member, the free ends of the two buffer arms being located adjacent each other and subjected to the action of common adjusting means provided to enable a desired initial pressure of the two buffer arms on the elastic buffer member.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |