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:
Jun. 29, 1976
Filed:
May. 19, 1975
Jacques Sirven, Paris, FR;
Other;
Abstract
A vehicle shock absorber of the hydraulic cylinder and piston type, including a control valve which, during compressive movement, limits pressure of the hydraulic fluid and thereby the damping force of the device in accordance with the rate of compressive movement above a predetermined rate. Operation of the valve may be controlled by pressure generated by obstructing the flow back to the reservoir of fluid displaced by the piston rod entering the cylinder on compressive movement, which pressure will vary in accordance with the rate of compression and consequently the rate of entry of the rod into the cylinder. A pressure control device is provided to limit the damping force during expansion of the shock absorber to thereby permit better road holding ability of the vehicle, with the relative strong damping force at the beginning of the following compressive movement acting to control oscillation of the suspended mass of the vehicle.