Window operator control

Details Window operator control Window operator control

1990-04-19

1991-04-02

Ro, Bentsu

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Motor-reversing

318266, 318286, 318467, 318468, H02P 158

Patent

active

050049615

ABSTRACT:
A control for a window operator is operable to control incremental movement of a window. The control includes means for developing a command to selectively move the window in a direction to an open or closed position, and means for determining when a plurality of motor drives have moved the window a preselected incremental distance. Means are coupled to the developing means and the determining means for energizing each of the motor drives if a command is developed, until the motor drives have moved the window the preselected incremental distance and thereafter deenergizing the motor drives until another command is received to move the window a subsequent incremental distance in the selected direction.

REFERENCES:
patent: 4328451 (1982-05-01), Barge
patent: 4533901 (1985-08-01), Lederle
patent: 4563623 (1986-01-01), Matsuka
patent: 4831509 (1989-05-01), Jones et al.
patent: 4931714 (1990-06-01), Yamamoto
patent: 4939433 (1990-07-01), Ballyns et al.

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