Rotary switch with spring stabilized contact control rotor

Details Rotary switch with spring stabilized contact control rotor Rotary switch with spring stabilized contact control rotor

1995-08-22

1996-12-31

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 6B, 200 6BB, 200565, 200 11R, 74527, H01H 1960, H01H 2180, G05G 506

Patent

active

055896715

ABSTRACT:
In a rotary switch, a manually rotatable shaft turns a disk which has a plurality of riser cam segments on one of its face. Stepwise rotation of the disk causes the cam segments to press down on flat spring contacts arranged in the switch to put the tip of one of the contacts at a time into electric contact with a stationary electrical contact that is connected to a source of electric potential or, in the alternative, to relieve one of the contacts from being pressed onto the stationary contact. An index wheel mounts to the shaft and has equiangularly spaced grooves. A plastic spring having parallel legs is mounted on the base of the switch. The legs have convex detents which register in successive grooves as the rotor is indexed rotationally in a stepwise fashion. The radius of the detents is greater than the radius of the grooves between the teeth of the index wheel. The legs of the spring are prohibited from moving longitudinally and tension is maintained in the spring legs at all times.

REFERENCES:
patent: 2834842 (1958-05-01), Le Beau
patent: 3196237 (1965-07-01), Westgate, Jr.
patent: 4034178 (1977-07-01), Koppenheffer et al.
patent: 4131771 (1978-12-01), Erickson et al.
patent: 4133990 (1979-01-01), Wanner et al.
patent: 4182939 (1980-01-01), Feaster
patent: 4495387 (1985-01-01), Thrush
patent: 4684905 (1987-08-01), Capek

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