Rotary step switch

Details Rotary step switch Rotary step switch

H - Electricity

01

H

306/313

H01H 19/54 (2006.01) H01H 19/24 (2006.01)

Patent

CA 1146202

ABSTRACT OF THE DISCLOSURE A step switch having contacts actuatable in pre- determined indexed positions comprises a rotatable driving shaft and a coaxial driven shaft rotating an indexing mechanism into the indexed positions for actuating the contacts. A coupling is arranged between the shafts for indexing the rotary movement of the driven shaft in response to the rotation of the driving shaft. The coupling includes a driving coupling part keyed to the driving shaft, a driven coupling part keyed to the driven shaft, the coupling parts having peripheries coaxial with the shafts, a spring having two ends respectively engaging the coupling parts and being tensioned in the direction of the coupling part peripheries, and a shape-conforming blocking device controlled by the rotary position of the shafts in relation to each other for respectively blocking and unblocking the rotary movement of the driven coupling part.

367938

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