Movable or removable closures – With operator for movably mounted closure – Drive within closure housing
Patent
1979-04-26
1981-05-19
Downey, Kenneth
Movable or removable closures
With operator for movably mounted closure
Drive within closure housing
49139, E05F 1508
Patent
active
042676681
ABSTRACT:
A power lift assembly for applying a rotary cranking force to the crank stub of a mechanical window crank in an automobile door is disclosed. The power lift assembly is intended for use in combination with an automobile door having interior and exterior side panels enclosing a compartment, a window mounted for reciprocal movement into and out of the compartment, and a mechanical crank assembly contained within the compartment and coupled intermediate the door and window. The force required to raise and lower the window is developed by an electrical drive motor which is mounted on the interior panel at a remote location relative to the crank stub. The rotary driving force developed by the drive motor is transmitted to the crank stub through a flexible drive shaft and a worm and gear assembly which is coupled directly to the crank stub. A switch assembly is provided for selectively applying electrical excitation from a power source to the drive motor, and includes a support housing which encloses the switch assembly and the gear assembly. Travel of the window is limited by the existing channel structure of the door with drive motor overheat control being provided by a self-interrupting and self-resetting current responsive switch coupled in series electrical circuit relation with the field winding of the drive motor.
REFERENCES:
patent: 2777688 (1957-01-01), Ehrlich et al.
patent: 2921783 (1960-01-01), Wentz
patent: 3404485 (1968-10-01), Henderson et al.
Downey Kenneth
Glaser Kenneth R.
LandOfFree
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