Step switch

Details Step switch Step switch

1980-10-06

1982-11-23

Grinney, A. T.

Electricity: circuit makers and breakers

Special application

Liquid or moisture responsive

200 11R, 220154, H01H 1924

Patent

active

043607195

ABSTRACT:
A rotary switch comprising a rotatable driving shaft and a coaxial driven switching shaft has a coupling arranged between the shafts for indexing the rotary movement of the switching shaft in response to the rotation of the driving shaft. The coupling includes driving and driven coupling parts respectively keyed to the driving and driven shaft, the coupling parts having peripheries coaxial with the shafts. A spring having two ends respectively engaging the coupling parts is tensioned in the direction of the coupling part peripheries and a blocking device controlled by the rotary position of the shafts in relation to each other respectively blocks and unblocks the rotary movement of the driven coupling part.

REFERENCES:
patent: 1684257 (1928-09-01), Boelter et al.
patent: 3283596 (1966-11-01), Roeser
patent: 4002088 (1977-01-01), Alsch

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