Invention Grant
- Patent Title: Two-stage variable force solenoid
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Application No.: US13984909Application Date: 2012-02-24
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Publication No.: US09599245B2Publication Date: 2017-03-21
- Inventor: Garrett R. Holmes
- Applicant: Garrett R. Holmes
- Applicant Address: US MI Auburn Hills
- Assignee: BORGWARNER INC.
- Current Assignee: BORGWARNER INC.
- Current Assignee Address: US MI Auburn Hills
- Agency: Howard & Howard Attorneys PLLC
- International Application: PCT/US2012/026445 WO 20120224
- International Announcement: WO2012/118698 WO 20120907
- Main IPC: F15B13/043
- IPC: F15B13/043 ; F16K31/02 ; F16K31/06 ; F15B13/04

Abstract:
A two-stage, variable force, solenoid control valve for regulating fluid pressure can include a valve body having a pilot fluid passage, including a metering land, in fluid communication with a flow amplifying fluid passage through a valve control port formed in the valve body. A solenoid operated pilot valve member, disposed in the pilot fluid passage can have a metering orifice operable in combination with the metering land for selectively connecting the valve control port with a pressurized fluid supply port and a return exhaust port in response to activation of a solenoid. A flow amplifying spool valve member, in fluid communication with the valve control port of the pilot valve member at one end, can selectively connect a load control port with the pressurized fluid supply port and the return exhaust port in response to pilot valve member operation.
Public/Granted literature
- US20130333773A1 TWO-STAGE VARIABLE FORCE SOLENOID Public/Granted day:2013-12-19
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