Rotary switch with common contact

Details Rotary switch with common contact Rotary switch with common contact

1987-04-29

1988-05-03

Scott, J. R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 11K, 200277, H01H 116, H01H 1954, H01H 2176

Patent

active

047421878

ABSTRACT:
The housing has a cylindrical cavity and central bore in the bottom wall for rotatably receiving a post on the cylindrical control member and the terminals have upper ends defining circumaxially spaced fixed contacts. A tubular conductor surrounds the post and is connected to one such fixed contact to provide a common contact adjacent all of the other fixed terminals. A ball is biased downwardly into contact with the common contact and selectively with the fixed contacts. The ball is provided in a recess of the rotary control member and moves over protuberances in the bottom wall of the housing to selectively connect the common contact with the individual fixed contacts.

REFERENCES:
patent: 2980770 (1961-04-01), Nabstedt
patent: 3226496 (1965-12-01), Seabury, Jr.
patent: 3255319 (1966-06-01), Paine
patent: 3263033 (1966-07-01), Metzger
patent: 3311717 (1967-03-01), Lace
patent: 3383478 (1968-05-01), Mandel
patent: 3596013 (1971-07-01), Pihl
patent: 3974348 (1976-08-01), Lipschutz
patent: 4623763 (1986-11-01), Krause

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