Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1986-08-07
1987-10-20
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
200 5E, 200 5EB, 206223, H01H 920
Patent
active
047015780
ABSTRACT:
Four different versions of multi-position selector switches can be assembled from a kit of parts by selecting various combinations of the parts and assembling them into a housing consisting of an insulating case and cover. Inventory of parts is reduced by mutual use of some parts in two or more versions. The possible selector switch versions are a three position selector switch having three momentary pushbuttons for selectively closing two normally open contacts and opening a normally closed contact a two-position slector switch having two momentary pushbuttons for selectably closing a normally open contact or opening a normally closed contact, a three-position selector switch having three maintainable pushbuttons for selectively closing two normally open contacts and opening the same, and a three-position selector switch having three pushbuttons including a momentary pushbutton and two maintainable pushbuttons for selectively closing two normally open contacts and for opening the maintained contact. The third and fourth versions described above which have maintainable pushbuttons comprise one or two sliding interlock members having cam surfaces cooperating with respective pushbuttons for preventing depression of more than one pushbutton at a time, and a holding plate for releasably retaining the pushbuttons depressed until the latter are returned to an extended position by one of the sliding interlock members.
REFERENCES:
patent: 2519899 (1950-08-01), Gaynor
patent: 2550623 (1951-04-01), Teruzzi
patent: 3100822 (1963-08-01), Vermeulen
patent: 3858018 (1974-12-01), Walley
patent: 4190749 (1980-02-01), Erickson et al.
patent: 4303811 (1981-12-01), Parkinson
patent: 4544810 (1985-10-01), Butterworth
Keranen John J.
Peret Scot F.
Stewart David R.
Eaton Corporation
Rowe D. A.
Scott J. R.
Vande Zande L. G.
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