Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1999-03-09
2000-06-27
Lee, Kevin
Fluid handling
Systems
Flow path with serial valves and/or closures
13761402, 285320, F16L 3728
Patent
active
060794453
ABSTRACT:
An auto-separating two-way check valve comprises a male and female joints wherein male joint comprises a left first retainer, a right first retainer, a first cavity between left first and right first retainers, a first flange, a first recess, and a first disk; a female joint having a second cavity, an inner flange, a second disk movable in second cavity, a left second retainer, a right second retainer, a first cavity between left second and right second retainers, a second flange, a second recess, and a second disk; a first pipe having holes on one open end and a first cap on the other end extended to the female joint; a second pipe having holes on one open end and a second cap on the other end received in the female joint; and springs wherein male joint connects to an open end of first pipe, female joint connects to an open end of second pipe, first disk is biased between first and second springs and received in first recess, and first pipe is through first recess to engage with second pipe; and second disk is biased between third and fourth springs and received in second recess, and second pipe is through second recess. This can prevent oil leak.
REFERENCES:
patent: 404786 (1889-06-01), Hanson
patent: 2770256 (1956-11-01), Krapp
patent: 3687161 (1972-08-01), Grguric et al.
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