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. 25, 1992
Filed:
Mar. 21, 1991
Applicant:
Inventors:
Assignee:
Suspa Compart Aktiengesellschaft, Altdorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F / ; F16F / ;
U.S. Cl.
CPC ...
267 6412 ; 13762512 ; 1376254 ; 188300 ; 18832221 ; 248161 ; 248631 ; 297355 ; 267 6428 ;
Abstract
A longitudinally adjustable gas spring has a valve having a valve pin arranged to be moved within a valve body. On both sides of the inner chamber of the valve body annular seals are arranged and bear against the cylindrical sections of different diameters. To bridge at least one annular seal grooves are formed in an associated cylindrical section. When the corresponding annular seal is bridged by a displacement of the valve pin, the respective annular seal remains in its position bearing against the cylindrical external surface of the corresponding cylindrical section, so that the wear of the seals implying the gas spring to become unserviceable is eliminated.