Patent US4173158A successfully refreshed from Google Patents.
US4173158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuned absorber for torsional vibrations with hydrostatic damping
Assignee: Individual
•
Filing: 1977-01-18
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Granted: 1979-11-06
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Expires: 1997-01-18
Abstract
Abstract A tuned absorber for torsional vibrations with hydrostatic damping comprises relatively rotatable outer and inner members defining primary chambers therebetween, a damping liquid in the primary chambers, springs or gas cushions arranged in secondary chambers to exert no torque on the outer and inner members, and connections between the chambers for permitting liquid to flow from the primary chambers to the secondary chambers for applying liquid pressure to the springs or gas cushions in the secondary chambers.
Inventors
- 👤 Leonhard Geislinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:34
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/80; F16F; F16F15/00; F16F15/10; F16F15/12; F16F15/121; F16F15/1215; F16F15/16; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2121; Y10T74/2122; Y10T74/2125
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
187 words
A tuned absorber for torsional vibrations with hydrostatic damping, which comprises (a) an outer member, (b) an inner member, (1) the outer and inner members being rotatable relative to each other, and (2) the outer and inner members defining primary chambers therebetween, the primary chambers comprising at least one first primary chamber arranged to decrease in volume upon relative rotation of the outer and inner members in one sense and at least one second primary chamber arranged to increase in volume in response to said rotation, (c) a damping liquid in the primary chambers, (d) means defining secondary chambers, the secondary chambers comprising first and second secondary chambers, (e) resilient means arranged in each one of the secondary chambers to exert no torque on the outer and inner members, and (f) passages connecting each one of the first the primary and secondary chambers, on the one hand, and each one of the second primary and secondary chambers, on the other hand, for permitting the liquid to flow from the primary chambers to the secondary chambers for applying liquid pressure to the resilient means in the secondary chambers.
Claim 2
Dependent Claim
187 words
A tuned absorber for torsional vibrations with hydrostatic damping, which comprises (a) an outer member, (b) an inner member, (1) the outer and inner members being rotatable relative to each other, and (2) the outer and inner members defining primary chambers therebetween, the primary chambers comprising at least one first primary chamber arranged to decrease in volume upon relative rotation of the outer and inner members in one sense and at least one second primary chamber arranged to increase in volume in response to said rotation, (c) a damping liquid in the primary chambers, (d) means defining secondary chambers, the secondary chambers comprising first and second secondary chambers, (e) resilient means arranged in each one of the secondary chambers to exert no torque on the outer and inner members, and (f) passages connecting each one of the first the primary and secondary chambers, on the one hand, and each one of the second primary and secondary chambers, on the other hand, for permitting the liquid to flow from the primary chambers to the secondary chambers for applying liquid pressure to the resilient means in the secondary chambers.
Claim 3
Dependent Claim
29 words
The tuned absorber for torsional vibrations with hydrostatic damping of claim 1, wherein the secondary chambers are disposed radially inwardly of the primary chambers and adjoining the inner member.
Claim 4
Dependent Claim
41 words
The tuned absorber for torsional vibrations with hydrostatic damping of claim 2, further comprising means defining a reservoir for the liquid disposed radially inwardly on the secondary chambers and liquid flow control means connected between the reservoir and the secondary chambers.
Claim 5
Dependent Claim
21 words
The tuned absorber for torsional vibrations with hydrostatic damping of claim 3, wherein the liquid flow control means are throttle valves.
Claim 6
Dependent Claim
45 words
The tuned absorber for torsional vibrations with hydrostatic damping of claim 1, wherein the means defining the secondary chambers comprises stationary containers and the connecting means comprises conduits connected to the containers, and further comprising rotary fittings connected between the conduits and the primary chambers.
Claim 7
Dependent Claim
19 words
The tuned absorber for torsional vibrations with hydrostatic damping of claim 1, wherein the resilient means comprises disc springs.
Claim 8
Dependent Claim
19 words
The tubed absorber for torsional vibrations with hydrostatic damping of claim 1, wherein the resilient means comprises gas cushions.
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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) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |