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:
May. 09, 2017
Filed:
Nov. 14, 2012
Applicant:
Stanadyne Corporation, Windsor, CT (US);
Inventor:
Robert G. Lucas, Ellington, CT (US);
Assignee:
Stanadyne LLC, Windsor, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M 37/04 (2006.01); F02M 69/46 (2006.01); F02M 57/02 (2006.01); F04B 19/00 (2006.01); F02M 41/00 (2006.01); F02M 59/36 (2006.01); F02M 59/46 (2006.01); F02M 63/02 (2006.01);
U.S. Cl.
CPC ...
F02M 41/00 (2013.01); F02M 59/367 (2013.01); F02M 59/464 (2013.01); F02M 63/0235 (2013.01); F02M 63/0245 (2013.01);
Abstract
A fuel pump has a low pressure fuel inlet () and a single piston pumping chamber () for supplying high pressure fuel through a pump outlet to an inlet side of a common rail (). The fuel pump comprises a primary pressure relief valve () having an inlet side in hydraulic communication with the inlet side of the common rail () and an outlet side in fluid communication with the pumping chamber (); and an auxiliary pressure relief valve () having an inlet side () in hydraulic communication with the pumping chamber () and an outlet side in direct fluid communication with a fuel passage () at the low pressure of the pump inlet ().