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:
Feb. 22, 2000
Filed:
Sep. 23, 1998
Applicant:
Inventors:
Karl-Hans Kohler, Wernau, DE;
Gerd Speidel, Winterbach, DE;
Assignee:
Mercedes-Benz Lenkungen GmbH, Dusseldorf, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B / ; F16K / ;
U.S. Cl.
CPC ...
251 64 ; 9137 / ; 13762523 ;
Abstract
The present invention concerns a servo valve, in particular for hydraulic power steering systems of motor vehicles, in the form of a rotary slide valve having a rotary slider and a control bushing which coaxially encloses the latter and is rotatable about a rotation axis, against spring force, relative to the rotary slider. The present invention includes a particular spring arrangement which has two helical compression springs lying in a radial plane of the rotation axis.