Patent US3645488A successfully refreshed from Google Patents.
US3645488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle seat construction
Assignee: Isringhausen GmbH and Co KG
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Filing: 1970-04-10
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Granted: 1972-02-29
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Expires: 1990-04-10
Abstract
Abstract An upper support is upwardly spaced above a lower support and movable towards and away from the same. A connecting means connects the supports with one another with freedom of movement of the upper support relative to the lower support. First damping means continuously acts upon the upper support for damping movement of the same relative to the lower support. Second damping means is activated at the will of the user for damping movements of the upper support with reference to the lower support in conjunction with and in addition to the action of the first damping means.
Inventors
- 👤 Klaus Sturhan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:21
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/50; B60N2/502; B60N2/02; B60N2/04; B60N2/045; B60N2/506; B60N2/508; B60N2/52; B60N2/525
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
In a vehicle seat as defined in claim 1 said connecting means comprising pairs of crossed pivotally connected levers, with each lever having two end portions one of which is connected to one of said supports and the other of which is pivotably and slidably connected to the other of said supports for displacement in direction normal to said movement of said upper support.
Claim 2
Dependent Claim
23 words
In a vehicle seat as defined in claim 1; further comprising releasable mounting means releasably mounting said damping means permitting replacement and exchange.
Claim 3
Dependent Claim
154 words
In a vehicle seat, in combination, a lower support; an upper support spaced above and movable towards and away from said lower support in a predetermined path; connecting means connecting said upper support with said lower support with freedom of movement relative to the latter in said path; first damping means acting upon said upper support and permanently damping The movements of the same relative to said lower support; second damping means extending longitudinally of said path and having an end portion; and activating means for activating said second damping means at the will of a user, including a bracket fast with said lower support adjacent said end portion and having a slot extending transversely to said path, a connector on said end portion and slidably guided in said slot, and arresting means for arresting said connector in two respective positions in each of which it is proximal to one end of said slot.
Claim 4
Dependent Claim
49 words
In a vehicle seat as defined in claim 4, said activating means further comprising a bifurcated member pivotably journaled in said slot and including two projections, said member being pivotable to and from two settings in each of which it arrests said connector in one of said positions thereof.
Claim 5
Dependent Claim
27 words
In a vehicle seat as defined in claim 4, said connector comprising a pin, and friction-reducing roller means journaled on at least a portion of said pin.
Claim 6
Dependent Claim
64 words
In a vehicle seat as defined in claim 5, said activating means further comprising tensioned helical spring means acting upon said bifurcated member in such a manner as to extend below the pivot axis of the same when said member is in one of said settings, and above the pivot axis of said member when the same is in the other of said settings.
Claim 7
Dependent Claim
18 words
In a vehicle seat as defined in claim 5, wherein both of said damping means are hydraulic dashpots.
Claim 8
Dependent Claim
31 words
In a vehicle seat as defined in claim 5, wherein one of said damping means has a damping capacity which is different from that of the other of said damping means.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |