Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1978-10-25
1980-07-22
Schwadron, Martin P.
Fluid handling
Systems
Flow path with serial valves and/or closures
13761405, 13761406, 285316, F16L 3722
Patent
active
042134820
ABSTRACT:
A detachable hydraulic coupler includes a male and female portion each including a valve which closes to prevent leakage when the coupler portions are detached. The valves do not directly contact each other when the coupler is closed, thereby simplifying the closing operation. The section of the female portion enclosing the male portion includes a series of locking balls slidable in apertures and which extend into a groove in the male portion to lock the coupler portions together. A slidable collar encircling the female portion normally holds the locking balls in locking position. The apertures supporting the balls, along with one wall of the groove, are inclined at an acute angle with respect to the relatively slidable cylindrical surfaces formed on the coupler portions so that much of the force tending to urge the locking balls outwardly is resisted by the walls of the various apertures in which the balls reside, thus minimizing the outward component of the force so that the collar may be readily moved into coupler detaching position.
REFERENCES:
patent: 2860893 (1958-11-01), Clark
patent: 2913263 (1959-11-01), Zajac
patent: 3097867 (1963-07-01), Saloum
patent: 3130749 (1964-04-01), Wittren
patent: 3163178 (1964-12-01), Stratman
patent: 3188123 (1965-06-01), Hansen
patent: 3530887 (1970-09-01), Stratman
Chambers A. Michael
Schwadron Martin P.
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