Timer with improved switch blade arrangement

Details Timer with improved switch blade arrangement Timer with improved switch blade arrangement

1983-12-27

1985-07-23

Scott, J. R.

Electricity: circuit makers and breakers

Retarded

Clock train

200 38B, 200 38C, H01H 4310

Patent

active

045310289

ABSTRACT:
Switches are fixed relative to a camstack for cam actuation and include two individual blades the free ends of which are biased toward the camstack. One of the blades engages the cams to actuate it relative to the other. The free end of the other blade rides on a pivotally mounted carriage which is biased by the hub of the camstack to reference the blade to the hub. The carriage includes individual cam followers which are flexible and which engage the hub to be flexed by the hub. Walls extend from the individual followers between adjacent sets of blades to prevent arcing between adjacent sets of electrical contacts. A third blade also rides on the carriage to be biased by the hub. The third blade provides another switching function.

REFERENCES:
patent: 3599006 (1971-08-01), Harris
patent: 3752944 (1973-08-01), Cartier et al.
patent: 4046980 (1977-09-01), Rosebrock

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