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. 09, 2010
Filed:
Feb. 20, 2007
James Paul Morris, Montoursville, PA (US);
Forrest Ross Lysinger, Harrisburg, PA (US);
Scott Matas, Williamsport, PA (US);
William Gundrum, Williamsport, PA (US);
James Paul Morris, Montoursville, PA (US);
Forrest Ross Lysinger, Harrisburg, PA (US);
Scott Matas, Williamsport, PA (US);
William Gundrum, Williamsport, PA (US);
Lycoming Engines, a division of Avco Corp., Williamsport, PA (US);
Abstract
A fuel pump includes a bearing element disposed in proximity to an impeller. The bearing element is configured to form a fuel seal with the impeller and to drain fuel leaked from the pump chamber back into the pump chamber. The bearing element minimizes leakage of fuel from the pump chamber into an engine coupled to the impeller. The fuel pump also includes redundant lip seals configured to provide redundant sealing relative to a shaft of the impeller within the fuel pump in order to minimize engine oil from entering the pump chamber and to minimize fuel from entering the engine. Integration of both the bearing element and the redundant lip seals as part of the fuel pump results in the fuel pump having a relatively compact size.