Locking device for connectors and closures

Details Locking device for connectors and closures Locking device for connectors and closures

1981-10-08

1983-01-11

Hall, George T.

Receptacles

Closures

Having means for securing or retaining closure in its closed...

220298, 285 90, 285DIG20, B65D 4500

Patent

active

043678238

ABSTRACT:
A locking device for connectors or closures which device prevents rotation of the means for holding a pair of members in engagement wherein the locking device includes a shield which overlies all surfaces on the locking device which might be engaged by a wrench to rotate the locking device while the closure is subjected to pressure. The locking device includes a pressure responsive member exposed to pressure within the closure which carries the shield and positions the shield to overlie all surfaces on the device on which a wrench may be placed and when there is no pressure differential across the pressure responsive member permits the shield to be moved to an out of the way position exposing a wrench surface.

REFERENCES:
patent: 2869752 (1959-01-01), Hall
patent: 2943869 (1960-07-01), Nordin
patent: 3990605 (1976-11-01), Hanke et al.

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