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:
Dec. 10, 1996
Filed:
May. 27, 1994
Applicant:
Inventor:
Eugen Eberhart, Dusseldorf, DE;
Assignee:
TRW Fahrwerkesysteme GmbH & Co. KG, Dusseldorf, DE;
Primary Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
9137 / ;
Abstract
The invention pertains to a steering booster for delivering compressed oil to the left and right chambers (6,7) of a servo cylinder (3) via a rotary slide valve (9) with a pump (10), whereby a reaction piston (18) is arranged between an input shaft (14) and a control sleeve (15) of the rotary slide valve (9). In order to create a simply constructed hydraulic reaction device for this steering booster, the invention suggests that an electrohydraulic transformer (30) for controlling a hydraulic reaction moment in dependence on certain parameters be arranged in a line (31) between the pump (10) and the rear side of the reaction piston (18).