HINGED LOCK Russian patent published in 1995 - IPC

FIELD: locking devices. SUBSTANCE: lock case has openings for bow ends and horizontal cylindrical channels with input openings on its side face. Besides, the case is provided with additional opening located coaxially with an opening for locking end of the bow. Spring loaded locking pins are located inside cylindrical channels, and a device limiting motion of the locking pins is installed and rigidly secured in the additional opening of the case. Each locking pin has one recess for free access of the locking end of the bow when opening (closing) the lock, and additional recess for interaction with side surface of the limiting device. Cylindrical channels in lock case are communicated with openings originated in it for locking bow end and limiting device, and cross over slots on the locking bow end. Lock key is made in the form of a plate with projections, reciprocal position of the projections with respect to plate surface and reciprocal position of input openings of the cylindrical channels with respect to surface of case side face with the openings originated on it is in register. Height of each projection is equal to the numerical value of a displacing of the recess for access of locking bow end of a proper locking pin regarding lengthwise axis of the opening for bow locking end in the case. EFFECT: higher reliability. 5 dwg