CYLINDRICAL LOCK WITH ACCORDING KEY AND BLANK KEY Russian patent published in 2010 - IPC E05B27/00 

FIELD: construction.

SUBSTANCE: cylindrical lock comprises body and core arranged in it with the possibility of rotation. Core has hole for key arrangement. At one side of key hole, accordingly in core and body there are coaxial openings provided, in which in axial direction there are main crossbars of core and body arranged, being loaded with springs. At the other side of key hole in specified core there is at least one additional unit of crossbars opposite to and coaxially with the main crossbars of core in according hole. Additional unit of crossbars includes pushing crossbar loaded with spring and protruding into key hole. Core grooves are arranged in core. After additional unit of crossbars has been placed in plane perpendicularly to the main axis and parallel to plane passing through axis of additional unit of crossbars, profiled guides are arranged in core grooves. Profiled guides represent an isosceles trapezoid arranged with identical side ledges intended for entry into bores provided longitudinally in body. At least one ledge selectively arranged on large trapezoidal base protrudes into key hole. Additionally in core along lateral side of key hole there are side holes provided, which are connected to plane of key hole at the sharp angle. Side crossbars of core are arranged in side holes of core. Two longitudinal channels inside body have shape that complies with design of side crossbars of core.

EFFECT: development of cylindrical lock with according key and blank key to manufacture key with higher secrecy and simple design of lock, increased number of code combinations and possibility to control blank keys and their unauthorised use to make key copies.

9 cl, 8 dwg