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:
Aug. 13, 2019
Filed:
Oct. 30, 2017
Applicant:
Caterpillar Inc., Peoria, IL (US);
Inventors:
Bobby John, Peoria, IL (US);
Glen Martin, Peoria, IL (US);
Jonathan W. Anders, Peoria, IL (US);
Robert Campion, Chillicothe, IL (US);
Assignee:
Caterpillar Inc., Deerfield, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 47/06 (2006.01); F02M 55/00 (2006.01); F02M 61/18 (2006.01);
U.S. Cl.
CPC ...
F02M 47/06 (2013.01); F02M 55/002 (2013.01); F02M 61/1886 (2013.01);
Abstract
A fuel system includes a fuel injector having a fuel passage and a purging fluid passage formed therein. A nozzle tip inner surface defines a sac forming a blind end of the fuel passage in the fuel injector. A coaxial concentric check assembly includes a purging check movable to admit a purging fluid such as pressurized air into the fuel passage to purge the sac of fuel. Reduced injector dribble is observed from the purging of fuel.