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:
Oct. 18, 2004
Applicant:
Michael H. Mcnaull, Ashland, OH (US);
Inventor:
Michael H. McNaull, Ashland, OH (US);
Assignee:
The Gorman-Rupp Company, Mansfield, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B043/00 ; F04B035/04 ; F04B053/12 ; F04B039/10 ; F04B053/10 ;
U.S. Cl.
CPC ...
Abstract
A pump () includes an impeller () positioned in a housing (). A valve assembly () is positioned within a valve sleeve () which is carried by the impeller (). The impeller () is carried by an armature (), and a pocket () is formed between the impeller () and the armature () adjacent to the valve sleeve (). One or more elastomeric members () are positioned in the pocket () to surround the impeller () at the area of the valve sleeve () to provide a retaining force on the valve sleeve ().