US4111231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorber valve
Assignee: Volkswagen AG
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Filing: 1976-12-06
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Granted: 1978-09-05
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Expires: 1996-12-06
Abstract
Abstract A valve arrangement adapted for use in a shock absorber, for example of the type employed in motor vehicles. The valve includes a valve seat and at least two disk springs. A first disk spring is clamped in the region of a first radial edge and extends in the radial direction toward the valve seat. However, its second, free radial edge terminates before reaching the valve seat. A second disk spring is held in the region of its own first radial edge against the pressure of the fluid medium only at the region of the second radial edge of the first disk spring. The second disk spring extends in the radial direction toward the valve seat such that its other, second radial edge extends over the valve seat and lies in contact therewith when the valve is closed.
Inventors
- 👤 Erhard Leppich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:52
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/34; F16F9/348; F16F9/3484; F16K; F16K15/00; F16K15/14; F16K15/1402; F16K15/148; F16K15/16; F16K15/161; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/789
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
In a valve, usable in a shock absorber for controlling flow of a fluid through a valve support member having a fluid passage, said valve comprising a valve seat and a plurality of disk springs cooperating therewith, the improvement wherein a first disk spring is clamped in the region of a first radial edge and extends in the radial direction toward said valve seat, its second radial edge terminating before reaching said valve seat and being free to flex in either axial direction, and wherein a second disk spring is held in the region of a first radial edge against the pressure of the fluid medium only at the region of said second radial edge of said first disk spring, the second disk spring extending in the radial direction toward the valve seat such that its other second radial edge extends over said valve seat and lies in contact therewith when the valve is closed.
Claim 2
Dependent Claim
155 words
In a valve, usable in a shock absorber for controlling flow of a fluid through a valve support member having a fluid passage, said valve comprising a valve seat and a plurality of disk springs cooperating therewith, the improvement wherein a first disk spring is clamped in the region of a first radial edge and extends in the radial direction toward said valve seat, its second radial edge terminating before reaching said valve seat and being free to flex in either axial direction, and wherein a second disk spring is held in the region of a first radial edge against the pressure of the fluid medium only at the region of said second radial edge of said first disk spring, the second disk spring extending in the radial direction toward the valve seat such that its other second radial edge extends over said valve seat and lies in contact therewith when the valve is closed.
Claim 3
Dependent Claim
38 words
A valve as specified in claim 1 wherein said second disk spring is provided with radial guiding means attached to said support member and to a radial edge of said second disk spring away from said valve seat.
Claim 4
Dependent Claim
27 words
A valve as specified in claim 1 wherein ridges are provided on at least one of said disk springs for radial guiding of said second disk spring.
Claim 5
Dependent Claim
50 words
A valve as specified in claim 1 wherein said support member includes a cylindrical rod portion concentric to said first disk spring and wherein the inner radial edge of said second disk spring is provided with radial guiding means engaging said rod portion and axially displaceable along said rod portion.
Claim 6
Dependent Claim
25 words
A valve as specified in claim 1 wherein there is provided at least one third disk spring arranged between said first and second disk springs.
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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |