Motorized water hydrant with manual override

Details Motorized water hydrant with manual override Motorized water hydrant with manual override

1994-12-28

1996-08-20

Look, Edward K.

Valves and valve actuation

Electrically actuated valve

With nonelectrical actuator

25112911, F16K 3105

Patent

active

055471641

ABSTRACT:
A motorized water hydrant of the type operated by a bi-directional electric motor assembly is provided with a mechanism for operating the hydrant in the event of electric power failure. A motor drive shaft rigidly coupled to a valve stem on the hydrant has first and second portions of circular and hexagonal cross-section, respectively. A handle member having a hexagonal aperture therein is slidably mounted on the drive shaft for movement between a first position in which the first portion of the shaft may rotate freely within the handle aperture, and a second position in which the second portion of the shaft mates with the handle aperture and prevents the motor drive shaft from rotating in the motor assembly. The motor assembly is rotatably mounted on the hydrant housing for movement about the valve stem axis. When the handle is moved to its second position and the motor assembly is manually rotated about the valve stem axis, the hydrant operates manually.

REFERENCES:
patent: 3204484 (1965-09-01), Gustafson
patent: 3417637 (1968-12-01), Vanderbilt
patent: 3687415 (1972-08-01), Turkot
patent: 4989830 (1991-02-01), Ratnik

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