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. 04, 2000
Filed:
Jul. 30, 1998
Heinz Siegel, Stuttgart, DE;
Manfred Hauser, Schwieberdingen, DE;
Norbert Alaze, Markgroeningen, DE;
Dieter Merklein, Kempten, DE;
Wolfgang Schuller, Sachsenheim, DE;
Julius Bayrhof, Lindenberg, DE;
Walter Kremsreiter, Hindelang, DE;
Joachim Evertz, Sonthofen, DE;
Joerg Zielke, Immenstadt, DE;
Ralf Zitzelsberger, Marktoberdorf, DE;
Andreas Weh, Durach, DE;
Bernd Allenzon, Wiggensbach, DE;
Robert Bosch GmbH, Stuggart, DE;
Abstract
The invention relates to a piston pump having a piston that is axially displaceable in a bush. In order to keep the piston in the bush in a manner secured against loss, a tubular filter is secured to the bush in the extension thereof; the filter has a smaller inside diameter than the bush and in this way keeps the piston in the bush.