Window operator for manually or electrically motorized actuation of a mechanical window drive system
AssigneeRolscreen Company
InventorsRalph G. Yuhas, William H. Birmingham
Life of this patent
Estimating the term…
Abstract
A motorized window operator for opening and closing a window having a mechanical drive system including a rotatable drive axle. A housing contains a motor which is in operative engagement with a gear train having an output gear. The output gear is engageable with an engagement means mounted upon the drive axle of the window. For engaging the output gear train with the engagement means, operation of the motor will rotate the drive axle to either open or close the window according to desire. The gear train is dissengageable from the engagement means which at the same time dissengages power to the motor. The drive axle can then be manually operated.
Claims19
A motorized window operator for opening and closing a window having a mechanical drive system including a rotatable drive axle comprising:
- a housing means which is both translatable and rotatable with respect to an engagement means;
- motor means having an output shaft rotatable in opposite directions contained within the housing means;
- the engagement means engaging the rotatable drive axle of the window;
- gear means for transferring rotational movement of the output shaft of the motor means through the engagement means to the drive axle of the window;
- translation means for moving the gear means between a first position in operative engagement with the engagement means, and a second position out of operative engagement with the engagement means;
- and
- mating means mateable and engageable with the engagement means when the gear means is in the second position and allowing manual rotation of the drive axle by manual rotation of the housing means.
A method of motorizing window operation for opening and closing a window having a mechanical drive system including a rotatable drive axle comprising:
- connecting an engagement means to the rotatable drive axle;
- simultaneously supplying electrical power to a motor means and engaging by translatable movement to the first position a gear train connected from an output shaft of the motor means to the engagement means;
- operating the motor to rotate the gear means which turns the engagement means and drive axle, opening or closing the window according to desire;
- disengaging the gear means from the engagement means by translatable movement to the second position simultaneously disengaging electrical power from the motor means and engaging the mating means for manually rotating the drive axle by manual rotation of the mating means and engagement means.
Dependencies are inferred from the claim text.