Patent ID: 6327881
Filing Date: 2001-12-11
Classification: E05B,E05C,Y10T

Abstract:
A locking device for a door, window, or the like, comprising:a main lock casing;at least one additional lock casing; andat least one pushrod connecting each additional lock casing with said main lock casing, wherein:each additional lock casing has a retractable latch bolt which defines a latch position and a locking position, biasing means for biasing said retractable latch bolt between its latch position to its locking position, a latch restoring lever and a latch blocking lever,said retractable latch bolt including an inclined leading edge, a protrusion at a latch end located opposite to said leading edge,said latch blocking lever serving to block said retractable latch bolt in its locking position; andsaid latch restoring lever acted upon by said protrusion, and having a first catch by means of which said pushrod is moved in one direction, and a second catch by means of which said latch restoring lever is moved by said pushrod in a direction opposite to said one direction said latch restoring lever serving to engage said latch blocking lever to unblock said retractable latch bolt in its locking position.