F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 37/40 (2006.01) B60T 17/04 (2006.01) B60T 17/22 (2006.01) F16L 37/28 (2006.01) G01L 19/00 (2006.01)
Patent
CA 2427680
An auxiliary valve assembly is provided for use with a male plug of a quick connect device, which male plug includes: a first valve body defining a flow passage from a protuberant end to an threaded end, the protuberant end being shaped to mate with a female coupler of the quick connect device; a first valve situated in the flow passage, the first valve including a poppet type head at a top end of a valve stem that is seatable against an outer annular valve seat formed in the flow passage at the protuberant end; and a first means for biasing the poppet type head against the outer annular valve seat so that the first valve is normally closed. The auxiliary valve assembly includes a second valve body in which is housed a second valve. The second valve body defines a flow bore from an upper threaded end to a lower threaded end which communicates with the flow passage of the first valve body. The upper threaded end connects with the threaded end of the first valve body whereas the lower threaded end is designed to screw into a threaded bore of a housing. A second valve in the flow bore features a plunger whose top end is disposed opposite a bottom end of the valve stem with a dead space in between. An annular groove around a bottom end of the plunger retains a sealing mechanism that is seatable against an inner annular valve seat formed in the flow bore. A second biasing mechanism acts upon the plunger so that the sealing mechanism seats against the inner annular valve seat thereby rendering the second valve normally closed. When the female coupler is mated to the protuberant end, the female coupler causes translation of the valve stem and the plunger thereby opening both the first valve and the second valve. The allows flow from the housing through the flow bore and the flow passage and into the female coupler.
Carroll John B.
Dimsa Robert D.
Johnston Gregory L.
Li Wei
Scott Daniel G.
Macrae & Co.
Westinghouse Air Brake Company
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