Invention Grant
- Patent Title: Independent metering valve with flow limiter
- Patent Title (中): 带流量限制器的独立计量阀
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Application No.: US12971149Application Date: 2010-12-17
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Publication No.: US08752371B2Publication Date: 2014-06-17
- Inventor: John Ferraz , Aleksandar M. Egelja , Pengfei Ma , Matthew J. Beschorner
- Applicant: John Ferraz , Aleksandar M. Egelja , Pengfei Ma , Matthew J. Beschorner
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: Miller, Matthias & Hull
- Main IPC: F16D31/02
- IPC: F16D31/02 ; F15B13/042

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.
Public/Granted literature
- US20120152368A1 Independent Metering Valve with Flow Limiter Public/Granted day:2012-06-21
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