초록 ▼

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

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.

대표청구항 ▼

A control for operating a window operator having an electrically controlled drive for moving a window in preselected incremental movements between fully open and closed positions, comprising: means for receiving a command to selectively move the window in a direction to the open position or the clos

A control for operating a window operator having an electrically controlled drive for moving a window in preselected incremental movements between fully open and closed positions, comprising: means for receiving a command to selectively move the window in a direction to the open position or the closed position; means for determining when the drive has moved the window a preselected incremental distance, less than a distance between fully open and closed positions; control means coupled to said receiving means and said determining means for enabling energization of the electrically controlled drive when a command is received by said receiving means until the drive has moved the window said preselected incremental distance and thereafter inhibiting energization of the drive until another command is received to move the window a subsequent incremental distance in the selected direction. A window operator power control circuit for operating a window operator having a motor drive for moving a window between open and closed positions, comprising: means for receiving bipolar electrical power to power the motor drive to selectively move the window in a direction to the open or closed position; first and second transistors coupled between said receiving means and the motor drive; means coupled to said receiving means and said transistors for driving said transistors if power is received by said receiving means; a limit switch for sensing a desired movement of the window; and means coupling said limit switch and said driving means for disabling said driving means to drive said transistors to uncouple the receiving means for the motor drive when said desired movement is sensed by said switch means.