DOOR BOLT Russian patent published in 2004 - IPC

FIELD: locking of doors in amenity rooms. SUBSTANCE: given design of door bolt makes it possible to make door open from outside without any damage to it when door bolt is closed from inside. Door bolt includes case and staple, case being located in door and staple being fixed in door frame, spring-loaded bolt mounted in case for longitudinal movement and interaction with staple when closed, internal handle with first through hole through which axle coupled to case is passed, spring-loaded control button anchored on rod and rod index pin. Door lock is provided with outer handle, blank plug and gearing including drive and driven links, drive link being put on axle and driven link being anchored on bolt. Each handle comes in the form of rotary flywheel, both flywheels being put on one axle. Control button is positioned on internal flywheel eccentrically and its rod is mounted for interaction with index pin fixed in door that has another through hole located opposite to button rod. Blank plug is fixed in door fro outside of second through hole. EFFECT: facilitated opening of door. 1 cl, 2 dwg