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. 19, 2013
Filed:
Jun. 25, 2009
Richard J. Fadler, St. Charles, MO (US);
Robert J. Schmidt, St. Peters, MO (US);
Philip S. Johnson, Granite City, IL (US);
Brian P. Klein, St. Louis, MO (US);
George A. Clark, Lewis Center, OH (US);
Richard J. Fadler, St. Charles, MO (US);
Robert J. Schmidt, St. Peters, MO (US);
Philip S. Johnson, Granite City, IL (US);
Brian P. Klein, St. Louis, MO (US);
George A. Clark, Lewis Center, OH (US);
Nidec Motor Corporation, St. Louis, MO (US);
Abstract
An electric pump has a stator, a rotor, a pump volute, and an endshield. The pump volute and the endshield are formed together as a single monolithic part, thereby minimizing the axial length of the electric pump. A drainage passageway is provided on the endshield to harmlessly drain away any fluid that seeps past the pump's seals. In one embodiment of the invention, the drainage passageway is a groove that faces the stator and is configured to facilitate the evaporation of and leak fluid by channeling the fluid near the stator, which warms the fluid and thereby increases the fluid's evaporation rate.