H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/358
H01H 3/04 (2006.01) G05G 5/02 (2006.01) G05G 23/00 (2006.01) H01H 21/22 (2006.01) H01H 9/28 (2006.01)
Patent
CA 1142983
HANDLE ASSEMBLY FOR MANUAL OPERATION OF ELECTRIC SWITCHES ABSTRACT OF THE DISCLOSURE 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 thereof. 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 ex- treme rotative locations. When the handle is between its extreme rotative locations, it cannot be slid into the frame due to interference of the con- toured surface. The handle may be locked when it is in either extreme ro- tative location and within the frame, whereat it presents a low profile, is shielded from the elements, and is virtually pryproof and vandal-proof.
364185
Evans David M.
Ramos Joel A.
Osler Hoskin & Harcourt Llp
S&c Electric Company
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