US 6,145,807 A · By-pass stud with integral safety valve

Abstract

A valve controlled by-pass stud mechanism for a structure defining a stud receptacle and having a bleed passage intersecting the stud receptacle and normally containing a pressurized fluid medium. An elongate stud body is positioned in sealed relation within the stud receptacle and has a vent passage and defines an internal valve seat located about the vent passage and also defines a valve receptacle having internal threads. A needle valve is in threaded engagement with the internal threads of the valve receptacle and is movable by its threaded engagement within the valve receptacle between a closed position in sealing engagement with the valve seat and blocking flow of pressurized fluid from the bleed passage to the vent passage and an open position spaced from the valve seat and permitting flow of pressurized fluid from the bleed passage to the vent passage. The valve controlled by-pass stud mechanism is particularly usable in redundant fashion with manifold type bleed valves to provide for simple, safe and effective bleeding of pressurized fluid.

Claims16

Dependent claims

A valve controlled fluid pressure by-pass stud mechanism for the pressure bleed system of a pressure containing chamber, comprising:

(a) a structural body defining a stud receptacle and having a bleed passage communicating said pressure containing chamber with said stud receptacle;
(b) an elongate stud body being disposed in sealed relation within said stud receptacle and defining a valve chamber in fluid communication with said stud receptacle, said elongate stud body also defining a vent passage intersecting said valve chamber and having a valve seat at the intersection of said vent passage with said valve chamber, said elongate stud body further defining a valve receptacle;
and
(c) a valve element being controllably movable within said valve receptacle and having a valve element disposed for seating engagement with said valve seat at a closed position of said valve element for blocking flow of pressurized fluid from said bleed passage to said vent passage and being positioned in spaced relation with said valve seat at an open position thereof for permitting flow of pressurized fluid from said bleed passage to said vent passage.

1 more element

The valve controlled fluid pressure by-pass stud mechanism for the pressure bleed system of a pressure containing chamber, comprising:

(a) a structural body defining a stud receptacle and having a bleed passage communicating said pressure containing chamber with said stud receptacle, said structural body defining an internal annular groove being intersected by said bleed passage;
(b) an elongate stud body being located within said stud receptacle and defining a valve chamber in fluid communication with said stud receptacle, said elongate stud body also defining a vent passage intersecting said valve chamber and having a generally conical concave valve seat at the intersection of said vent passage with said valve chamber, said elongate stud body further defining a valve receptacle;
and
(c) a needle valve element being controllably movable within said valve receptacle and having a valve needle having a conical tip disposed for seating engagement with said valve seat at a closed position of said valve element for blocking flow of pressurized fluid from said bleed passage to said vent passage and being positioned in spaced relation with said valve seat at an open position thereof for permitting flow of pressurized fluid from said bleed passage to said vent passage.

1 more element

Dependencies are inferred from the claim text.

By-pass stud with integral safety valve

Life of this patent

By-pass stud with integral safety valve

Life of this patent

Abstract

Claims16