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:
Jul. 21, 1992
Filed:
Nov. 06, 1990
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F / ; F16F / ; F16F / ; B60G / ;
U.S. Cl.
CPC ...
18832219 ; 188282 ; 188284 ; 267226 ; 267127 ;
Abstract
In a hydraulic telescopic damper with a cylinder (10) and a piston (12) which has a check valve (O-ring 18) and a narrow opening (22), a valve member (30) is mounted on the side of piston (12) away from the pressure side. Valve member (30) is urged by the force of a spring (36) in a locking position of piston (12) and keeps opening (22) closed. The telescopic damper thereby locks automatically. Exerting an additional manual force on the piston rod can release the self-locking action once more.