05515704 is referenced by 14 patents and cites 29 patents.

A security lock (10) including an arm (14) and a mounting member (12) is provided for use with a dead bolt lock assembly having a lock actuator on a first side (34) of a door (32) and a turn piece (36) on a second side (38) of the door (32). When the security lock (10) is in an engaged position (42), abutting surfaces (22a, 22b) of the arm (14) are positioned immediately adjacent the turn piece (36) to abut and restrict rotation of the turn piece (36).

Title
Security lock for a dead bolt lock assembly
Application Number
125016
Publication Number
5515704
Application Date
September 16, 1994
Publication Date
May 14, 1996
Inventor
Cao van Nguyen
115 Burwood Way, Folsom, 95630
CA, US
Agent
Teresa J Wiant
IPC
E05B 13/00
View Original Source