Tamperproof hydrant lock with controlled shock absorber

Details Tamperproof hydrant lock with controlled shock absorber Tamperproof hydrant lock with controlled shock absorber

1977-08-31

1979-02-13

Michalsky, Gerald A.

Fluid handling

Hydrant type

With casing

1373825, 251 54, 251291, E03B 902, F16K 3148, F16K 3506

Patent

active

041390164

ABSTRACT:
A tamperproof hydrant lock with a controlled shock absorber. Power transmitting means are mounted on an operating rod extending within a chamber in the hydrant housing. A spring is mounted between the power transmitting means and the hydrant housing. First and second hydraulic means operatively associated with the power transmitting means control gradual opening and closing of the hydrant valve over first and second delay intervals of time respectively.

REFERENCES:
patent: 3147827 (1964-09-01), Weisheit
patent: 3532109 (1970-10-01), Smith

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