LOCK AND ITS CATCH (MODIFICATIONS) Russian patent published in 2005 - IPC

FIELD: locksmith's work.

SUBSTANCE: the lock has a cross-bar plate with cross bars, cross-bar plate drive mechanism including at least one bolt, racks on the cross-bar plate and bolt, spring-loaded perpendicularly to the cross-bar plate and a guide pin, two additional cross bars positioned respectively on two additional parallel cross-bar plates installed in the plane parallel with the first cross-bar pate for movement perpendicularly to the first cross-bar plate, and a means for their drive including a spring-loaded rotary shaft with a lever installed on it, the drive mechanism and the drive means kinematically are not linked with each other. The drive means of the additional cross-bar plates is made in the form of at least double-arm lever, whose arms are hinge-joined respectively to one of the additional parallel cross-bar plates, and the angle formed by these arms makes more than 90 deg, the additional cross-bar plates are so spring-loaded that the additional cross-bar plates are moved apart from each other in the line of their movement.

EFFECT: enhanced fire safety of rooms.

5 cl, 2 dwg