Invention Grant
- Patent Title: Double action directional fluid flow valve
- Patent Title (中): 双作用方向流体流量阀
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Application No.: US12205148Application Date: 2008-09-05
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Publication No.: US08256738B2Publication Date: 2012-09-04
- Inventor: John Leslie Johnson , James G. Johnson
- Applicant: John Leslie Johnson , James G. Johnson
- Agency: Carlson, Gaskey & Olds, P.C.
- Main IPC: F16K31/12
- IPC: F16K31/12

Abstract:
A double action directional fluid flow valve includes a stepped piston connected with a poppet valve and moveable by a controller between open and closed positions by applying a continuous pressure to a small diameter piston face and selectively applying and removing pressure from a large diameter piston face to move the poppet valve between an open position and a closed position.
Public/Granted literature
- US20090072180A1 DOUBLE ACTION DIRECTIONAL FLUID FLOW VALVE Public/Granted day:2009-03-19
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