초록 ▼

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 termin

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.

대표청구항 ▼

In an alternate manually and electrically actuated bolt of the type having a bolt movable between extended and retracted positions, manual operator means operably connected to said bolt for moving said bolt between said extended and retracted positions upon manual actuation thereof, an electric moto

In an alternate manually and electrically actuated bolt of the type having a bolt movable between extended and retracted positions, manual operator means operably connected to said bolt for moving said bolt between said extended and retracted positions upon manual actuation thereof, an electric motor, and gear means operably connected to each of said electric motor and said bolt for moving said bolt between said extended and retracted positions upon electrical actuation of said motor; the improvements including: said gear means comprising an oppositely rotatable driven gear operably connected to said bolt for moving said bolt between said extended and retracted positions upon opposite rotatable movement of said driven gear, a driving gear segment operably connected oppositely movable by said electric motor, said driving gear segment being constructed and arranged relative to said driven gear engaging said driven gear moving said bolt between said extended and retracted positions and totally disengaging said driven gear upon said bolt moving into either of said extended and retracted positions; whereby, said bolt may be moved from either of its extended and retracted positions to the other of its extended and retracted positions by said manual operator means without movement of said driving gear segment and said electric motor.