Automatic hose clamp

Details Automatic hose clamp Automatic hose clamp

1980-05-19

1982-04-06

Nilson, Robert G.

Valves and valve actuation

Tube compressors

Fluid pressure actuated

137467, 251 9, F16L 5514

Patent

active

043232191

ABSTRACT:
An automatic hose clamp is provided particularly for use with fire hoses, and is manually engaged on a fire hose which is subsequently attached to a fire hydrant, there being a trickle flow allowed past the clamp so that the downstream end of the hose, if unconnected to anything, will dissipate this trickle, but upon being connected to the fire truck pumping unit the downstream end fills and exerts back pressure on a specially oriented plate in the clamp, finally resulting in the popping free of the clamp due to the expansion of the hose against the plate so that water is free to flow at this point unobstructed by the clamp. Previously a manually operated clamp was used requiring the presence of a fireman to turn a wheel or otherwise operate the valve actuator to release the clamp once the hose had been connected to the main pump.

REFERENCES:
patent: 1330523 (1920-02-01), Evitts
patent: 2483954 (1949-10-01), Weiss
patent: 4268004 (1981-05-01), Gatin

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