Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Plural – diverse motor controls
Patent
1989-08-14
1991-04-09
Shoop, Jr., William M.
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Plural, diverse motor controls
49139, 74625, E05F 1500
Patent
active
050067664
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.
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Birmingham William H.
Yuhas Ralph G.
Rolscreen Company
Shoop Jr. William M.
Wysocki A. Jonathan
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