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. 05, 1994
Filed:
Feb. 01, 1993
Applicant:
Inventors:
Helmut Rueckert, Reinheim, DE;
Kurt Ruehle, Karben, DE;
Assignee:
Alfred Teves GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D / ; F16B / ;
U.S. Cl.
CPC ...
188 718 ; 188 724 ; 277169 ; 277171 ;
Abstract
A disc brake having a brake caliper provided with a hydraulic actuating device including a brake cylinder and a brake piston. The brake piston is sealed relative to the brake cylinder by way of a sealing ring arranged in a surrounding annular groove of the brake cylinder. The annular groove is provided with a recess arranged in the transitional area between a groove wall and the cylinder surface. The recess is confined by at least three surrounding conical surfaces whose angles towards the cylinder surface increase progressively, starting from the surface which borders on the cylinder surface up to the surface which borders on the groove wall.