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:
Nov. 01, 2005
Filed:
Feb. 20, 2004
Peter Wagner, Werdohl, DE;
Peter Wagner, Werdohl, DE;
K.H. Brinkmann GmbH & Co. KG, Werdohl, DE;
Abstract
A rotary pump includes a pump chamber disposed above a liquid basin, and a radial impeller with a vertical axis disposed in the pump chamber. An intake connecting piece is disposed coaxially with the impeller and is positioned in the liquid basin. Either an inner part of the radial impeller or an axial impeller in the intake connecting piece, is provided for aspirating liquid in an interior region of the pump chamber. Venting channels lead from the interior region of the pump chamber to an outside and extend along a side wall of the intake connecting piece up to about a plane of the intake opening of the intake connecting piece. At least one venting channel has a lateral opening in the side wall of the intake connecting piece which opens essentially in a radial direction to the pump chamber.