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:
Jun. 17, 2014
Filed:
Dec. 17, 2010
John Ferraz, Romeoville, IL (US);
Aleksandar M. Egelja, Naperville, IL (US);
Pengfei MA, Naperville, IL (US);
Matthew J. Beschorner, Plainfield, IL (US);
John Ferraz, Romeoville, IL (US);
Aleksandar M. Egelja, Naperville, IL (US);
Pengfei Ma, Naperville, IL (US);
Matthew J. Beschorner, Plainfield, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
An independent metering valve (IMV) assembly is disclosed that includes a metering stem including an inlet. The IMV assembly also includes a hydro-mechanical control valve in communication with a fluid source and the inlet. The control valve also including a spool with a closed end and an open end. The control valve includes a biasing member that biases the control valve or spool towards an open position thereby establishing communication between the fluid source and the inlet. The control valve also including a load signal line providing communication between an outlet of the control valve upstream of the inlet and the closed end of the spool. Wherein high pressure in the load signal line allowing the control valve to move towards a closed position thereby overcoming bias of the biasing member and reducing flow to the inlet during a high pressure condition.