Electric actuator for door lock

Details Electric actuator for door lock Electric actuator for door lock

1989-04-28

1990-12-18

Moore, Richard E.

Closure fasteners

Operators with knobs or handles

292201, E05C 326, E05C 1756

Patent

active

049781553

ABSTRACT:
An electric actuator for actuating a door lock comprises an electric motor having a drive shaft and an output shaft arranged coaxial with the drive shaft, the output shaft having a helical ridge formed thereabout. A clutch is interposed between the drive shaft and the output shaft, the clutch permitting only a power transmission from the drive shaft to the output shaft. An operation rod having a threaded bore is operatively engaged with the helical ridge of the output shaft, the operation rod being adapted to connect with an operation lever of the door lock; and a rotation suppressing structure suppresses rotation of the operation rod about its axis even when the output shaft is rotated about its axis.

REFERENCES:
patent: 4290634 (1981-09-01), Gelhard
patent: 4708378 (1987-11-01), Ingerhoven

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