| 摘要 |
A window operator including a first sun gear, a first drive gear including a drive gear portion and a ring gear portion, a manual worn drive operatively connected to the drive gear portion, a planetary gear carrier, a first set of pl aneraty gears carried between the first sun gear and the ring gear portion, and an opera ble connection between the gear carrier and a window sash whereby pivoting of the ge ar carrier operates the sash. A first ring gear is drivably connected to pivot with the first sun gear, and a second ring gear is fixed with respect to the window frame . A second set of planeraty gears has first and second axially spaced gear segments, the first gear segments being disposed between a motor driven sun gear and one of th e ring gears, and the second gear segments drivably engaging the other of the ring gears. The ring gears and/or the gear, segments have different numbers of teeth. The worm drive lies in substantially the same plane as the drive gear, and is hi dden by the window frame except for a female socket aligned with the worm axis and exposed through an opening in the frame. A handle is provided with a male connec tor selectively extendable through the frame opening to operatively engage the worm female socket. The gears are made of an inherently corrosion resistant non-metal lic material such as plastic.
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