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:
Oct. 01, 2002
Filed:
Apr. 16, 2001
Manfred Hauser, Schwieberdingen, DE;
Norbert Alaze, Markgroenningen, DE;
Walter Kremsreiter, Hindelang, DE;
Thorsten Duermeier, Vaihingen/Enz, DE;
Juergen Reiner, Gruenebach, DE;
Werner Rittler, Immenstadt, DE;
Ursula Eckstein, Schwieberdingen, DE;
Andreas Weh, Durach, DE;
Erika Mank, Ludwigsburg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a piston pump for a slip-controlled hydraulic vehicle brake system. To make a piston of the piston pump easy and inexpensive to manufacture, the invention proposes that the piston be comprised of a sleeve-like shaped part and a valve seat part that is made of plastic and is press-fitted into the shaped part. A high-pressure-side sealing lip is formed onto the valve seat part and is of one piece with it. By means of a tubular support body, a restoring spring is supported on the valve seat part spaced apart from a valve seat of the valve seat part and spaced apart from the sealing lip, which prevents the valve seat and the sealing lip from being impaired by the force of the restoring spring.