SINGLE-TURN LOCK Russian patent published in 2007 - IPC E05B15/12 E05B17/04 

FIELD: ironmongery, particularly locks adapted to lock door having narrow door-leaf.

SUBSTANCE: single-turn lock comprises body with bottom having figured groove, bolt with pin cooperating with rectangular groove made in lid, as well as fixer. Figured groove sides are defined by gauged curve cuts. The fixer is arranged in groove made in bolt end transversely to direction of bolt movement and cooperating with figured groove by means of fixer pin. Fixer pin in extreme figured groove points is in stable positions corresponding to opened and closed bolt positions. The lock also has key insert having locking stud cooperating with fixer and bolt and telescopic door closer located in upper part of lock body. The door closer comprises bush pivotally arranged in fixer recess and rod spring-loaded with respect to bush bottom and cooperating with support.

EFFECT: increased lock reliability due to improved stability of telescopic door closer cooperation with support.

3 dwg