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. 25, 2000
Filed:
Mar. 12, 1998
Franz Arbocast, Heidenheim, DE;
Peter Peiz, Heidenheim, DE;
Voith Turbo GmbH & Co. KG, , DE;
Abstract
A non-crescent seal gear pump includes a housing with a pump chamber, a rotatable ring gear in the pump chamber having an outer periphery and internal toothing and an eccentric pinion with external toothing and rotatable in mesh with the rotatable ring gear at one circumferential side of the ring gear and the pinion and the ring gear. The tooth tips of the ring gear have grooves in which are inserted radially movable sealing elements that are movable radially slightly. The sealing elements in the ring gear and the teeth of the pinion are so placed as to slide past each other at the other circumferential side of the ring gear. A distribution groove is worked into either the wall of the profile groove and/or into the sealing element at the wall and the distribution groove extends axially along the sealing element. Radial legs may project outwardly from the axially extending distribution groove.