H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/327
H01H 19/54 (2006.01) H01H 27/06 (2006.01)
Patent
CA 1089899
ACTUATING MECHANISM FOR ELECTRICAL SWITCHES Abstract of the Disclosure An actuating mechanism for actuating electrical switches to insure coordinated connection of circuits vital to safe operation of a mass-transit vehicle includes a frame upon which are mounted one or more electrical switches. Also included is a cam rotatably mounted on the frame for actuating engagement with the switches upon rotation of the cam by key or similar device. The actuating mechanism further includes a toggle mechan- ism that is connected at one end to the frame and at the other end to the cam at a point spaced from the point of mounting of the cam to the frame. Secured to the toggle mechanism is a spring whose dead center position does not coincide with the point of actuating contact of the cam with the switch such that upon rotation of the cam, the spring resists movement of the cam until the dead center position of the spring is reached. As the cam is rotated beyond the dead center position of the spring, the spring assists in the rotation of the cam through the point of actuating contact with the electrical switches. The actuating mechanism further includes a lock arrange- ment for locking the cam against rotational movement.
286516
Borden Ladner Gervais Llp
Vapor Canada Limited
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