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:
Jan. 07, 1992
Filed:
Apr. 09, 1990
Applicant:
Inventors:
Norbert Ackermann, Eitorf, DE;
Hurbert Beck, Eitorf-Keuenhof, DE;
Assignee:
BOGE Aktiengesellschaft, Eitorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60G / ;
U.S. Cl.
CPC ...
188299 ; 188282 ; 18832215 ;
Abstract
Controllable vibration dampers for motor vehicles that include a cylinder which contains a damping medium and an axially movable piston rod sealed and submerged in the medium. A damping piston is attached to the piston rod and subdivides the cylinder into a two work chambers. A hollow piston is provided with at least one valve disc which is movable within the piston. The disc moves into and out of engagement with ledge or edge structures provided within the piston when a dampening medium is directed against and past the disc.