Torque limiting drive and programmer/timer employing same

Details Torque limiting drive and programmer/timer employing same Torque limiting drive and programmer/timer employing same

F - Mech Eng,Light,Heat,Weapons

16

D

F16D 7/02 (2006.01) G04C 23/08 (2006.01) G04C 23/10 (2006.01) H01H 3/58 (2006.01) H01H 43/10 (2006.01)

Patent

CA 2114820

A torque limiting drive and programmer/timer using same. A motor drives a driving member which has drive lugs engaging the central web of a plural-armed wave spring. The wave spring arms frictionally engaged radially oppositely facing annular friction surfaces on a driven member, which in a programmer/timer is the program cam, which upon rotation of the cam is operative for sequentially actuating electrical switches. User rotation of the cam when the motor is not operative allows the wave spring arms to slip against the annular friction surfaces permitting the user to position the cam as desired.

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