Adjustable Pressure Controlled Valve
AssigneeNumatics, Incorporated
InventorsTerry John Hessling, Scott Andrew Menko
Life of this patent
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Abstract
A pressure controlled valve having a housing with a first pressure chamber for communication to a pneumatically pressurized control source. The housing has an inlet for communication with a pneumatic supply source and outlet selectively in fluid flow with the inlet. A movable valve selectively opens and closes with respect to a valve seat for selectively opening a pathway from the inlet to the outlet and closing the pathway between the inlet and outlet. The pressure chamber may be sealingly and fluidly separated from the pathway between the inlet and the outlet. The pressure chamber provides a closing biasing force on the movable valve and a resilient spring mounted in the housing provides an opening biasing force on the movable valve.
Claims17
An adjustable pressure controlled valve comprising:
- a housing;
- a first bore in said housing;
- an inlet passage leading to said bore and an outlet passage leading from said bore in said housing;
- said housing having a valve seat interposed between said inlet passage and outlet passage, and operably interposed between said inlet passage and said outlet passage of said housing;
- a valve member mounted in said first bore having a valve surface for seating on said valve seat when in a closed position and movable from said valve seat to an open position;
- said valve member having an opposite surface that is operably in communication to pressure exerted on said opposite surface, for producing a closing biasing force on said valve member;
- a resilient biasing member mounted in said housing for exerting a opening biasing force on said valve member;
- and
- an adjustment member adjustably connected to said housing for adjusting the opening biasing force of said resilient biasing member.
A pressure controlled valve comprising:
- a housing having a pressure chamber for communication with a pneumatically pressurized control source;
- said housing having an inlet for communication with a pneumatic supply source and outlet selectively in fluid flow with said inlet;
- a valve seat in said housing;
- a movable valve for opening and closing with respect to said valve seat to selectively open a pathway from said inlet to said outlet and close said pathway between said inlet and outlet;
- said pressure chamber being sealingly and fluidly separated from said pathway between said inlet and outlet in said housing;
- and
- said movable valve constructed to respond to pneumatic pressure within said pressure chamber that provides a closing bias force;
- and
- a spring mounted in said housing providing an opening biasing force on said movable valve.
An adjustable pressure controlled valve comprising:
- a housing with a valve seat and passage extending from an inlet to an outlet;
- a valve member movable between an open position to a closed position with one side of said valve member selectively seated on said valve seat when in the closed position;
- said housing having a pressure chamber on an opposite side of said valve member for exerting a closing bias on said valve member;
- an adjustable resilient spring member exerting an opening bias on said valve;
- an adjustment member axially movable relative to said housing by rotation with respect to said housing to adjust the opening bias exerted by said adjustable resilient spring member on said valve;
- said adjustment member having circumferentially spaced grooves about a central axis and axially spaced shoulders at each end of said grooves;
- a spring detent clip selectively engageable to said groove to secure said adjustment member against accidental rotation;
- and
- said spring detent engageable with said axially spaced shoulders to define the range of axial motion of said adjustment member.
Dependencies are inferred from the claim text.