Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits
Patent
1984-06-28
1985-11-26
Pellinen, A. D.
Electrical transmission or interconnection systems
Plural load circuit systems
Selectively connected or controlled load circuits
307113, 194 5, 194 13, G07F 1300, G07F 518
Patent
active
045556393
ABSTRACT:
A money operated control is used to control and operate a selected one of a plurality of electrical units such as washing, drying or gas dispensing machines. Each such unit includes a unit controller device operable to control the functioning of the unit upon delivery of a start signal to the unit controller device. The start signal is generated by actuating a select switch which corresponds to the desired machine. Each select switch is defined by two normally closed switches which are ganged together with a normally open switch.
REFERENCES:
patent: 3066245 (1962-11-01), Baker et al.
patent: 3587808 (1971-06-01), Romanowski
patent: 3921854 (1975-11-01), Formica et al.
DeBoer T.
Pellinen A. D.
Rolston George A.
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