Invention Grant
- Patent Title: Three-way poppet valve with intermediate pilot port
- Patent Title (中): 三通提升阀带中间先导口
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Application No.: US11894075Application Date: 2007-08-20
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Publication No.: US07921880B2Publication Date: 2011-04-12
- Inventor: Randall S. Jackson , Anthony Casale , Jeff Oligmueller
- Applicant: Randall S. Jackson , Anthony Casale , Jeff Oligmueller
- Applicant Address: US IL Lincolnshire
- Assignee: HydraForce, Inc.
- Current Assignee: HydraForce, Inc.
- Current Assignee Address: US IL Lincolnshire
- Agency: Leydig, Voit & Mayer, Ltd.
- Main IPC: F16K11/24
- IPC: F16K11/24

Abstract:
An integrated three-way poppet valve is disclosed with an intermediate pilot port and an integral load holding check valve. The valve incorporates a reverse flow check poppet for load hold capability, which enables a lower cost solution compared to a combination of valves of similar functionality. A control method is also disclosed using an integrated three-way poppet valve to control the flow of hydraulic oil to a cylinder, hydraulic motor, or other hydraulic device in proportion to the amount of a current applied to a solenoid coil. Depending on the current applied, the valve blocks all flow or else permits flow from one inlet port to two outlet ports proportional to the current applied.
Public/Granted literature
- US20090050222A1 Three-way poppet valve with intermediate pilot port Public/Granted day:2009-02-26
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