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:
Mar. 26, 2013
Filed:
Sep. 16, 2005
Applicant:
Ulrich Fromm, Untergruppenbach, DE;
Inventor:
Ulrich Fromm, Untergruppenbach, DE;
Assignee:
Watson-Marlow GmbH, Rommerskirchen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03C 4/00 (2006.01); F04C 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rotary displacement pump includes a stator () fixed in a housing (), a rotor including a shaft portion (), a radially protruding web (), a scraper () having an engagement slot () engaging the protruding web (). A guide () retains the scraper () in a circumferential direction and allows the scraper () to move reciprocatingly in a substantially axial direction. The stator () includes first and second members that abut each other in abutment areas having a circular arc configuration.