Fire hose coupling lock

Details Fire hose coupling lock Fire hose coupling lock

1985-07-01

1987-03-10

Arola, Dave W.

Pipe joints or couplings

With means blocking release of holding means

Auxiliary latch

285 92, F16L 1500

Patent

active

046486305

ABSTRACT:
A fire hose coupling locking device is disclosed which effectively secures a twist-type, high-pressure, quick-connect fire hose coupling from twisting loose when pressure is applied. Typically, it is permanently attached to a friction knob or lug at the top of a collar on the high-pressure outlet side on the fire pumper. It is pivotable about the lug and of sufficient length to span the coupling faces of the high-pressure outlet side to the fire hose and to engage of engaging the friction knob or lug on the top of the collar on the fire hose. Any relative rotation of the collars when water under high pressure is initially forced through the coupling is prevented.

REFERENCES:
patent: 708104 (1902-09-01), Warner
patent: 726077 (1903-04-01), Lehotzky
patent: 734414 (1903-07-01), Freeman
patent: 1080675 (1913-12-01), Berg
patent: 1200266 (1916-10-01), Strausser
patent: 1858992 (1932-05-01), Hansen
patent: 2277399 (1942-03-01), Groff
patent: 3153548 (1964-10-01), Speakman et al.
patent: 3807774 (1974-04-01), Heath

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