Washing machine

Details Washing machine Washing machine

1988-10-06

1990-01-16

Coe, Philip R.

Textiles: fluid treating apparatus

Machines

Single tub and automatic sequential operation mechanism

D06F 3302

Patent

active

048934844

ABSTRACT:
By using a relay of which contact is opened or closed in response to a signal from instruction and control unit, an electric power is supplied to a load unit through the contact of the relay. The relay is such that a power switch is turned on to excite a coil for closing the contact thereof. When a reserved operation is performed, the relay is turned off in response to the signal from the instruction and control unit at the time at which a reserved time and the contents of the reserved operation have been set. When the time to start the reserved operation comes, the relay is turned on again in response to the signal from the instruction and control unit to start a supply of electric power to the load unit. Power is not applied to the load unit during the waiting period until the reserved operation starts. Thus, the malfunction of the load unit due to the deterioration of the semiconductor switching elements is prevented, and a safer washing machine can be obtained.

REFERENCES:
patent: 4743820 (1988-05-01), Veach

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