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:
Aug. 14, 2001
Filed:
Mar. 13, 2000
Franz Arbogast, Heidenheim, DE;
Peter Peiz, Heidenheim, DE;
Voith Turbo GmbH & Co. KG, Heidenheim, DE;
Abstract
A sickleless gear wheel pump includes an internally geared hollow wheel including a plurality of tooth tips. A pinion includes a plurality of tooth tips and meshes with the hollow wheel. The hollow wheel and pinion are rotatably disposed in a housing. The housing has a suction connection and a pressure connection. The hollow wheel has openings for a medium to be pumped therethrough. Each tooth tip of the plurality of tooth tips of the hollow wheel has a profile groove in which there is present a sealing element that is radially moveable during rotation of the hollow wheel and pinion and which is in sliding seal-off engagement with a respective tooth tip of the plurality of tooth tips of the pinion. Each sealing element is metallic.