Patent ID: 6032991
Filing Date: 2000-03-07
Classification: E05B,Y10T

Abstract:
A tubular lock assembly for actuating a door latch mechanism, comprising:a support adapted to be mounted on on an inner side of a door;a hollow cylinder having an outer end mounted on said support and an inner end extending inwardly from said support;a spindle extending axially inside said hollow cylinder and connected to said hollow cylinder for simultaneous rotation therewith, said spindle being adapted to be connected to the latch mechanism;a rotary handle body connected to said inner end of said hollow cylinder;a driving wheel mounted on said support around said hollow cylinder and having a first gear part adjacent to said support and a second gear part adjacent to said handle body;an electric motor mounted on said support adjacent to and externally of said driving wheel;a first transmission mechanism mounted on said support and connected to said first gear part and said motor; anda second transmission mechanism mounted inside said handle body and connected to said second gear part and said spindle.