Patent ID: 6418764
Filing Date: 2002-07-16
Classification: E05B,Y10T

Abstract:
A drive apparatus for a lock, said drive apparatus comprising: an escutcheon; a drive shaft rotatably fitted to said escutcheon for transmitting rotational force to said lock or a locking cylinder within said lock; a turning handle rotatable relative to said escutcheon; and a gear motor disposed in said turning handle, said gear motor having an output shaft, wherein:a first toothed wheel is disposed on said drive shaft and is positioned to engage said turning handle so as transmit rotational movement of said turning handle to said drive shaft so that said drive shaft rotates; said gear motor is secured to said escutcheon so as to rotate in unison with said escutcheon; a coupler is provided for selectively coupling said gear motor output shaft to said first toothed wheel when a current is applied to said gear motor to actuate said gear motor.