The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 1992
Filed:
Apr. 26, 1991
Neil Jones, Palm City, FL (US);
TRW Inc., Lyndhurst, OH (US);
Abstract
An active suspension system for a vehicle having a sprung mass and an unsprung mass comprises a hydraulic actuator connected between the sprung mass and the unsprung mass, and a hydraulic accumulator. An energy saving valve communicates the accumulator with the actuator to effect energy saving flows of hydraulic fluid in the actuator. The system provides a nominal hydraulic fluid pressure differential acting across a piston in the actuator when the actuator is in a nominal operating condition. The system responds to static load inputs to the vehicle by providing a load responsive pressure differential across the piston when the actuator is in a loaded condition. The load responsive pressure differential acts on the piston equally and oppositely to the static load input. The system maintains the hydraulic fluid pressure in the first hydraulic chamber equal to a nominal pressure level when the actuator is in a loaded condition. The nominal pressure level is equal to the mean operating pressure of the accumulator. The system thus maintains an optimum capacity for energy savings.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile