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. 25, 2009
Filed:
Jun. 30, 2008
Bradley E. Bartley, Pekin, IL (US);
Bradley E. Bartley, Pekin, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
An assembly is disclosed having a high pressure fuel source, a low pressure fuel source, and a housing. The assembly also has a piston disposed within the housing and dividing the housing into a first chamber, a second chamber, a third chamber, and a fourth chamber. The first and second chambers are fluidly connected to the high pressure fuel source. The third chamber is selectively fluidly connected to the high pressure fuel source and the low pressure fuel source, and the fourth chamber is fluidly connected to the low pressure fuel source. The piston is movable from a first position when the third chamber is selectively connected to the high pressure fuel source. The piston is movable to a second position when the third chamber is selectively connected to the low pressure fuel source.