Valves and valve actuation – With correlated flow path – Valve operated by joining flow path sections
Patent
1998-03-23
1999-06-15
Lee, Kevin
Valves and valve actuation
With correlated flow path
Valve operated by joining flow path sections
1373292, F16L 2902
Patent
active
059114045
ABSTRACT:
An automatic fluid stopper and fluid stopper mounting spanner including an automatic fluid stopper installed in a fluid outlet pipe and forced by fluid pressure to close the fluid outlet pipe, and a spanner for turning the automatic fluid stopper into or out of the fluid outlet pipe, wherein the automatic fluid stopper includes a threaded annular mounting base threaded into an inner thread on the fluid outlet pipe, a movable valve inserted through the mounting base and forced by fluid pressure to close the fluid passage, an O-ring mounted around the movable valve for sealing the gap between the outside wall of the movable valve and the inside wall of the mounting base, a stop block coupled to the movable valve, and a spring member mounted around the movable valve and retained between the mounting base and the stop block, the stop block being forced backwards to open the movable valve from the fluid passage through the mounting base when a fluid tap is fastened to the fluid outlet pipe, the movable valve being forced forwards by fluid pressure and the spring force of the spring member to close the fluid passage when the fluid tap is removed from the fluid outlet pipe.
REFERENCES:
patent: 4558819 (1985-12-01), McDonald
patent: 5110088 (1992-05-01), Shih
patent: 5344119 (1994-09-01), Wang
patent: 5628340 (1997-05-01), Huang
patent: 5628492 (1997-05-01), Lee
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