Float-type clutch for automatic washing machine

Details Float-type clutch for automatic washing machine Float-type clutch for automatic washing machine

1995-03-28

1996-12-24

Coe, Philip R.

Textiles: fluid treating apparatus

Machines

Single tub and automatic sequential operation mechanism

68 237, D06F 2304, D06F 3740

Patent

active

055864554

ABSTRACT:
An automatic washing machine includes a clutch float having external gear teeth. The clutch float is located around a shaft which is driven by an electric motor and to which an agitator is secured. The clutch float couples the shaft to an inner rotatable tub when its external gear teeth are engaged with internal gear teeth at the inner tub side in a dehydration step. The clutch float moves upwardly in subjection to buoyancy when water is supplied into the inner tub in a wash step. The external gear teeth of the clutch float are disengaged from the internal gear teeth so that the shaft is decoupled from the inner tub. The washing machine further includes a rotation restricting float which moves upwardly in subjection to the buoyancy in the wash step to couple the inner tub to an outer stationary tub and which decouples the inner tub from the outer tub in the dehydration step. A device delivers a position signal indicative of the position of the clutch float which is vertically movable. Based on the position signal, a control device controls the drive motor. The drive motor is of an outer rotor type and a motor control circuit is disposed in its stator.

REFERENCES:
patent: 3557580 (1971-01-01), Racenis
patent: 4837882 (1989-06-01), Brenner et al.
patent: 4998052 (1991-03-01), Erdman et al.
patent: 5381677 (1995-01-01), Park et al.

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