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:
Apr. 14, 1981
Filed:
Feb. 07, 1978
Wolfgang Geiling, Schwebheim, DE;
Fichtel & Sachs AG, Schweinfurt, DE;
Abstract
A cross-flow controlling valve for a hydropneumatic vehicle suspension has a casing formed with three ports of which two communicate with longitudinally terminal portions of a bore in the casing. A piston is freely slidable in the bore between two terminal positions. Longitudinally spaced shoulder portions of the bore bound a transversely open, longitudinal groove in the piston which is longer than the intermediate portion of the casing bore connecting the terminal bore portions. Each shoulder portion is dimensioned to bound a throttling gap connecting the groove with one of the terminal bore portions when the shoulder portion is received in the intermediate bore portion. The groove in the piston permanently communicates with the third casing port.