Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1995-02-13
1996-02-06
Schwadron, Martin P.
Fluid handling
Systems
Flow path with serial valves and/or closures
13761401, F16L 3728
Patent
active
054889723
ABSTRACT:
This invention relates to an environmental coupling that reduces spillage to less than 1 mL. The coupling includes a first convex ball valve and a second concave ball valve. One ball valve includes flat surfaces on the ball and a retainer with "flats" that correspond to the "flats" on the ball valve. This feature keeps the ball valve on centerline and allows valve actuation without damage to either ball valve. The coupling also provides other numerous safeguards against spillage. For instance, the coupling has handles with concave and convex edges to prohibit the wrong sequencing of opening and closing the ball valves, interlocking means to prevent the uncoupling of the annular bodies of the ball valves when the first ball valve is in the open position, and a handle button release and secondary handle lock.
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McCracken Donald G.
Zander David G.
Aeroquip Corporation
Lee Kevin L.
Schwadron Martin P.
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