Patent ID: 8459702
Filing Date: 2013-06-11
Classification: E05B,E05C,Y10T

Abstract:
1. A cremone-bolt door-locking device comprising a pair of rods, one of the rods projecting from one end of an elongate housing and the other of the rods extending from the other end of the housing, wherein: one of said rods is connected to a first rack support that is slidably mounted inside the housing; said housing houses a second rack support connected to the other rod, said second rack support slidably mounted inside said housing and installed facing the first support rack; each rack support carries a respective rack segment provided with a set of teeth in engagement with an actuator pinion installed between the two rack segments, said actuator pinion being connected to a rotary control mechanism; each rack segment is hinged to the rack support that carries it; and the set of teeth of each hinged rack segment is extended over a curved portion of a free end of said segment so as to enable each hinged rack segment to pivot at the end of the stroke and to be braced, thereby making movement of the rods irreversible until the actuator pinion is reversely rotated.