Safety coupler locking means

Valves and valve actuation – With correlated flow path – Flow path joint interlocked with valve or actuator

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Details

285 18, 285312, F16L 3720

Patent

active

055359841

ABSTRACT:
An elbow coupler includes a linkage for locking the coupler to an adapter. The linkage has a resilient, laterally deflectable link that limits the forces applied to the linkage thereby preventing the components of the linkage from being overstressed. A spring loaded, blocking sleeve prevents the coupler from normally remaining upright on an adapter, unless it is locked thereon through use of the locking linkage. A flapper valve is interconnected with the blocking sleeve to the end that the valve is normally closed and then opened when the coupler is locked onto an adapter.

REFERENCES:
patent: 4030524 (1977-06-01), McMath et al.
patent: 4575130 (1986-03-01), Pemberton et al.
patent: 5060982 (1991-10-01), Matsushita

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