Elecro-mechanical programmer/timer

Details Elecro-mechanical programmer/timer Elecro-mechanical programmer/timer

1996-05-03

1998-04-07

Scott, J. R.

Electricity: circuit makers and breakers

Retarded

Clock train

200 38B, 200 38C, H01H 4310

Patent

active

057366993

ABSTRACT:
The present invention provides an electro-mechanical programmer/timer having a plurality of switches actuated by a rotating program cam with each of the switches tracking a separate cam track on the cam. The program cam is indexed by a pawl which engages ratchet teeth on the program cam. The pawl is oscillated by engagement with a sub-interval cam driven by a motor drive. At least one of the switches following the program cam is a single-pole double-throw switch with the center blade thereof actuated by a cam follower lever operated by a separate track on the sub-interval cam.

REFERENCES:
patent: Re29158 (1977-03-01), Cartier et al.
patent: 3819886 (1974-06-01), Homan et al.
patent: 4551590 (1985-11-01), Mahon
patent: 4577179 (1986-03-01), Chambers et al.
patent: 4599499 (1986-07-01), Duve
patent: 4611103 (1986-09-01), Eder et al.
patent: 4616209 (1986-10-01), Mahon
patent: 4629845 (1986-12-01), Mahon
patent: 4755635 (1988-07-01), Willigman
patent: 5042311 (1991-08-01), Duve et al.

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