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:
Oct. 06, 2015
Filed:
Aug. 21, 2008
John D. Crofts, Edinburgh, IN (US);
Scott R. Simmons, Simpsonville, SC (US);
Wesley R. Thayer, Columbus, IN (US);
Bela Doszpoly, Columbus, IN (US);
David M. Rix, Columbus, IN (US);
Anthony A. Shaull, Columbus, IN (US);
David L. Buchanan, Westport, IN (US);
John D. Crofts, Edinburgh, IN (US);
Scott R. Simmons, Simpsonville, SC (US);
Wesley R. Thayer, Columbus, IN (US);
Bela Doszpoly, Columbus, IN (US);
David M. Rix, Columbus, IN (US);
Anthony A. Shaull, Columbus, IN (US);
David L. Buchanan, Westport, IN (US);
Cummins Inc., Columbus, IN (US);
Abstract
A fuel pump is disclosed wherein a substantially cylindrical plunger bore is provided with an annular drain groove fluidically coupled to a drain duct. A pump plunger is driven by a drive system located in a separate mechanical compartment that holds a reservoir of lubricating oil. An annular seal is provided adjacent the drain groove substantially at the end of the bore and retained in position by a seal support. Exemplary embodiments provide the drain groove and seal as being positioned immediately adjacent one another so that the seal forms a lower wall of the drain groove.