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. 10, 2009
Filed:
Sep. 30, 2005
Michael Todd Verkuilen, Metamora, IL (US);
Jeffrey Lee Kuehn, Metamora, IL (US);
Srinivas Kowta, Sullurpet, IN;
Eko A. Prasetiawan, Dunlap, IL (US);
Shoji Tozawa, Peoria, IL (US);
Michael Todd VerKuilen, Metamora, IL (US);
Jeffrey Lee Kuehn, Metamora, IL (US);
Srinivas Kowta, Sullurpet, IN;
Eko A. Prasetiawan, Dunlap, IL (US);
Shoji Tozawa, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A hydraulic system is disclosed having a source of pressurized fluid, at least a one hydraulic actuator, and a first valve. The first valve has a first valve element movable relative to a first valve bore between a plurality of positions from a first position in which pressurized fluid is substantially blocked from flowing toward the at least one hydraulic actuator to a second position in which pressurized fluid is allowed to flow toward the at least one hydraulic actuator. The first valve element is configured to be selectively moved from a third position located between the first and second positions to a fourth position located between the third and second positions at least partially based on a pressure signal of pressurized fluid downstream of the first valve.