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. 17, 2006
Filed:
Nov. 30, 2004
Mark P. Vonderwell, Dunlap, IL (US);
Yun Guo, Peoria, IL (US);
Mikhall A. Sorokine, Naperville, IL (US);
Aleksandar M Egelja, Naperville, IL (US);
Pengfei MA, Naperville, IL (US);
Mark P. Vonderwell, Dunlap, IL (US);
Yun Guo, Peoria, IL (US);
Mikhall A. Sorokine, Naperville, IL (US);
Aleksandar M Egelja, Naperville, IL (US);
Pengfei Ma, Naperville, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A valve for a fluid circuit is disclosed. The valve has a main valve element with a first end and a second end. The main valve element is movable between a flow-passing and a flow-blocking position in response to fluid pressure exerted on the first and second ends. The valve also has a solenoid mechanism operatively associated with the main valve element to move the main valve element toward one of the flow-passing and the flow-blocking positions. The valve further has a main valve spring configured to bias the main valve element in opposition to movement caused by the solenoid mechanism. The valve additionally has a relief valve element configured to communicate a fluid with the first end of the main valve element in response to a fluid pressure to initiate movement of the main valve element.