Handle assembly for manual operation of electric switches

Details Handle assembly for manual operation of electric switches Handle assembly for manual operation of electric switches

1979-11-09

1981-12-29

Little, Willis

Electricity: circuit makers and breakers

Electric switch details

Actuators

200 48KB, 200337, H01H 2500

Patent

active

043084419

ABSTRACT:
A manual operating handle assembly for an enclosed switch includes a walled frame which resides within the switch enclosure and rotatably mounts a shaft. A sprocket on the shaft turns therewith to move a chain coupled to another sprocket which operates the switch or a stored-energy operator therefor. A pair of arms keyed to the shaft mounts a handle for longitudinal sliding movement toward the shaft and into the frame, and away from the shaft and out of the frame. Rotation of the handle between extreme rotative locations rotates the arms and the shaft. A contoured surface within the frame interferes with the handle in its extreme rotative locations when it is within the frame to prevent rotation thereof. Only if the handle is first slid out of the frame does it clear the surface for rotation between its extreme rotative locations. When the handle is between its extreme rotative locations, it cannot be slid into the frame due to interference of the contoured surface. The handle may be locked when it is in either extreme rotative location and within the frame, whereat it presents a low profile, is shielded from the elements, and is virtually pryproof and vandal-proof.

REFERENCES:
patent: 1928487 (1933-09-01), Hammerly
patent: 2234563 (1941-03-01), Kneass
patent: 3028459 (1962-04-01), Norden
patent: 3141947 (1964-07-01), Daly et al.

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