Alternate manually and electrically actuated bolt

Details Alternate manually and electrically actuated bolt Alternate manually and electrically actuated bolt

1981-10-02

1984-03-27

Moore, Richard E.

Closure fasteners

Bolts

Sliding

E05B 4700, E05C 106

Patent

active

044389620

ABSTRACT:
A bolt of the type mounted in a door is longitudinally movable between extended and retracted positions by a reversible electric motor connected to the bolt through gear means and a part of manual operator means for the bolt. The gear means from the motor includes extensive gear reduction and terminates in a driving gear comprised of circumferentially spaced gear segments engageable with a driven gear telescoped with the manual operator means, the driving gear segments being positioned completely disengaging the driven gear at either of the bolt extended or retracted positions and either gear segment engaging the driven gear for moving the bolt between its extended and retracted positions. Thus, the bolt may be moved between its extended and retracted positions either by the manual operator means without consequent movement of the major portion of the gear means and electric motor, or by the electric motor and gear means. The manual operator means extends transversely into engagement with bolt moving means for moving the bolt and is comprised of a key operated lock at one side and a thumbturn at the other side. The driven gear is normally connected for rotating the manual operator means to move the bolt therethrough, but by selected axial movement of the manual operator means, the driven gear may be disconnected therefrom. Thus, upon failure of the motor during bolt movement thereby intermediate extended and retracted positions, selected axial movement of the manual operator means eliminates the motor and gear means through disconnection so that the bolt may be readily moved by the manual operator means.

REFERENCES:
patent: 1169659 (1916-01-01), Lowell
patent: 3234766 (1966-02-01), O'Brien
patent: 3541874 (1970-11-01), Du Rocher
patent: 3947060 (1976-03-01), Zimmer et al.
patent: 4012929 (1977-03-01), Solovieff
patent: 4093289 (1978-06-01), Inabayashi et al.
patent: 4126341 (1978-11-01), Bradstock
patent: 4132439 (1979-01-01), Millar

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