G - Physics – 07 – F
Patent
G - Physics
07
F
342/11.2
G07F 13/00 (2006.01) G07F 5/18 (2006.01)
Patent
CA 1287677
ABSTRACT OF THE DISCLOSURE 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. A central control panel includes a latching relay which when pulsed to its set state energizes a transformer. The transformer in turn energizes a switching unit in the central control panel which selects one of the electrical units to be energized. The actuation of the selected electrical unit resets the latching relay to its original condition and additional relay circuitry is provided so that the connection to the machine in use does not interfere with subsequent operation of the control panel to select other machines.
556017
Macrae & Co.
Melek Bernard
LandOfFree
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