Document Type and Number:
Japanese Patent JPS4931499
Kind Code:
A
Abstract:
A door latch, the knobs of which may be turned either clockwise or counterclockwise for operating the latch bolt is described. One of the knobs engages the corresponding escutcheon when the knob is pushed towards the door to prevent rotation and provide a privacy lock. A pair of pins extend between the knobs and engage ramps on the inside end of latch bolt for retracting it. The latch bolt is split so that the ramp portions may collapse towards each other for insertion through a hole in the edge of the door. Interlocking support posts on the two escutcheons prevent the latch bolt from collapsing during use. A "kickoff" mechanism operated by the latch bolt prevents inadvertent locking and also provides resilient release to prevent damage in case the door is locked while the locking knob is held in. The door latch is made of injection molded plastic and the two escutcheons are held together by a single axial screw.
Application Number:
JP10724172A
Publication Date:
March 20, 1974
Filing Date:
October 27, 1972
Export Citation:
International Classes:
E05B55/14; E05C1/16; (IPC1-7): E05C1/12