Patent US3796570A successfully refreshed from Google Patents.
Patent US3586309A successfully refreshed from Google Patents.
US3586309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unstable dampener
Assignee: VYZKUMMY USTAV KOLEJOVYCH VOZI
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Filing: 1969-01-03
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Granted: 1971-06-22
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Expires: 1989-01-03
Abstract
Abstract A suspension device having a labile characteristic and suited for connection in parallel with a spring group having a stable characteristic so as to achieve a soft characteristic. At least one planar mechanism includes two supporting members and an interposed strut. A pair of mutual sprung parts respectively carry these supporting members and guide them in the direction of the springing motion. The axis of the strut in the neutral position of the mechanism extends perpendicular to the direction of springing motion, and its position during spring action is inclined in one or the other direction from the neutral position. A group of springs urges the supporting members toward the strut. This group of springs develops precompression in a direction perpendicular to the springing direction.
Inventors
- 👤 Ladislav Freibauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:46
CPC Classifications
F; F16; F16F; F16F3/00; F16F3/02; F16F2228/00; F16F2228/06; F16F2228/063; F16F2236/00; F16F2236/02; F16F2236/027
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
237 words
A resilient suspension system with unstable characteristic, suitable for being associated in parallel with a spring group which has a stable linear characteristic, to attain a resulting soft cushioning between two parts, comprising at least one strut element, at least two supporting members interposing the strut element between the two cushioned parts, means guiding at least one of these supporting members in a direction perpendicular to the direction of cushioning, whereby in the central position of both cushioned parts, corresponding to the basic static load of the cushioned parts, the axis of the strut element is substantially perpendicular to the direction of cushioning with a spring force acting in the direction of the axis of the strut element, a first one of the supporting members being adapted to be taken along by the first cushioned part in the direction of cushioning, a second one of the supporting members being adapted to be taken along in the direction of cushioning by the second cushioned part, the relative position of the second supporting member being adjustable with respect to the second cushioned part, stops on the first cushioned part causing a change of the relative position of the second supporting member with respect to the second cushioned part in the cushioning direction after striking said stops, and means for generating a resistance to changes of the position of the second supporting member with respect to the second cushioned part.
Claim 2
Dependent Claim
237 words
A resilient suspension system with unstable characteristic, suitable for being associated in parallel with a spring group which has a stable linear characteristic, to attain a resulting soft cushioning between two parts, comprising at least one strut element, at least two supporting members interposing the strut element between the two cushioned parts, means guiding at least one of these supporting members in a direction perpendicular to the direction of cushioning, whereby in the central position of both cushioned parts, corresponding to the basic static load of the cushioned parts, the axis of the strut element is substantially perpendicular to the direction of cushioning with a spring force acting in the direction of the axis of the strut element, a first one of the supporting members being adapted to be taken along by the first cushioned part in the direction of cushioning, a second one of the supporting members being adapted to be taken along in the direction of cushioning by the second cushioned part, the relative position of the second supporting member being adjustable with respect to the second cushioned part, stops on the first cushioned part causing a change of the relative position of the second supporting member with respect to the second cushioned part in the cushioning direction after striking said stops, and means for generating a resistance to changes of the position of the second supporting member with respect to the second cushioned part.
Claim 3
Dependent Claim
48 words
A resilient suspension system as claimed in claim 1, wherein the spring force which acts on the strut element in a direction substantially perpendicular to the cushioning direction is substantially reduced prior to the striking by the second supporting member of the stops on the first cushioned part.
Claim 4
Dependent Claim
43 words
A resilient suspension system as claimed in claim 2, wherein the spring group comprises a number of spring means acting in parallel, and a part of said spring means is provided with limiting means which eliminate their spring force after a predetermined extension.
Claim 5
Dependent Claim
71 words
A resilient suspension system as claimed in claim 1, wherein the strut element is composed of a cylindrical body with an axis perpendicular to the strut element, the strut element rests on cylindrical surfaces of both supporting members with parallel generating lines of the cylindrical body and of said cylindrical surfaces, and comprising means for maintaining the alignment of the cylindrical body with respect to the centers of said cylindrical surfaces.
Claim 6
Dependent Claim
77 words
A resilient suspension system As claimed in claim 1, comprising strut elements arranged symmetrically with respect to a plane of symetry parallel to the cushioning direction and perpendicular to the spring force which acts on said strut elements, the supporting members which are distant from the plane of symmetry being carried along by the first cushioned part, and the supporting members which are nearer to such plane of symmetry being carried along by the second cushioned part.
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 |