Control method for an automatic door opening/closing apparatus i

Details Control method for an automatic door opening/closing apparatus i Control method for an automatic door opening/closing apparatus i

1996-11-06

1998-11-17

Martin, David S.

Electricity: motive power systems

Motor-reversing

Automatic and/or with time-delay means

318446, 318452, 318466, 68 1226, H02D 100

Patent

active

058381252

ABSTRACT:
A control method is disclosed that is applicable to a washing machine having an apparatus for automatically opening/closing a washer door using a motor. The control method comprises the steps of operating the motor in a direction to transition the door between open and closed states. When a command to transition the door is entered, door motor operation is stopped if the door is successfully transitioned between states within a predetermined time interval (t1) that is started at the time of the beginning of the operation of the door motor. The door is returned to an original position (e.g., closed) if the door does not transition to a position opposite (e.g., open) the original position by the time interval (t1) elapses.

REFERENCES:
patent: 3589787 (1971-06-01), Messersmith
patent: 4383206 (1983-05-01), Matsuoka et al.
patent: 4563625 (1986-01-01), Kornbrekke et al.
patent: 4623179 (1986-11-01), Davis et al.
patent: 5520424 (1996-05-01), Hapke et al.
patent: 5546773 (1996-08-01), Lee

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