Patent US3598424A successfully refreshed from Google Patents.
US3598424A
Expired / Lapsed
US
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Control unit for vehicle suspensions
Assignee: Rover Co Ltd
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Filing: 1969-08-19
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Granted: 1971-08-10
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Expires: 1989-08-19
Abstract
Abstract A control unit for an active vehicle suspension system of the kind in which hydraulic struts acting on the wheel suspension linkages are in series with springs and have hydraulic fluid fed to and from them in response to vehicle body movements comprises a pendulum device connected to a rotary damper which is in parallel with a spring. The body of the damper is rotatably mounted in bearings in a mounting plate for securing to the vehicle bodywork and adapted to be rotated by movements of the suspension linkage and the damper spindle carries the pendulum and acts on hydraulic valves controlling the fluid flow. The spring can be a leaf spring interconnecting the damper body and the pendulum.
Inventors
- 👤 Stephen J Crouch
- 👤 Peter W R Stubbs
- 👤 Michael W Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:08
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/015; B60G17/019; B60G17/01908; B60G17/01925; B60G17/0152
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
A control unit for fluid-pressure-actuated active vehicle suspension systems comprising a rotary damper made up of first and second relatively rotatable parts and a damping medium opposing relative rotation therebetween, a pendulum fast with the first of said parts, mounting plate, bearing means rotatably supporting said damper on said mounting plate, means on the second of said parts adapted for connection to a moving part of a vehicle suspension linkage, and spring means interconnecting said first and second parts.
Claim 2
Dependent Claim
79 words
A control unit for fluid-pressure-actuated active vehicle suspension systems comprising a rotary damper made up of first and second relatively rotatable parts and a damping medium opposing relative rotation therebetween, a pendulum fast with the first of said parts, mounting plate, bearing means rotatably supporting said damper on said mounting plate, means on the second of said parts adapted for connection to a moving part of a vehicle suspension linkage, and spring means interconnecting said first and second parts.
Claim 3
Dependent Claim
23 words
A control unit as set forth in claim 1 wherein said spring extends between said second part of the damper and said pendulum.
Claim 4
Dependent Claim
16 words
A control unit as set forth in claim 1 wherein said spring is a leaf spring.
Claim 5
Dependent Claim
36 words
A control unit as set forth in claim 1 including a valve block on said mounting plate, a valve member movable in said valve block, and an operative connection between said pendulum and said valve member.
Claim 6
Dependent Claim
28 words
A control unit as set forth in claim 4 wherein said operative connection comprises a rod extending tangentially with respect to the axis of movement of said pendulum.
Claim 7
Dependent Claim
40 words
A control unit as set forth in claim 1 wherein said first part of the damper comprises a rotor and said second part comprises a damper body housing said rotor, said damper body being rotatably supported in said bearing means.
Claim 8
Dependent Claim
46 words
A vehicle having a suspension system including a vehicle connected to a sprung mass through a movable suspension linkage, a control unit as set forth in claim 1 mounted on said sprung mass, and an operative connection between said second damper part and said suspension linkage.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |