Door lock system

Details Door lock system Door lock system

1998-06-17

1999-11-30

Boucher, Darnell M.

Locks

Special application

For closures

292 39, 292DIG51, 292DIG21, 292142, 70118, E05B 6314

Patent

active

059921889

ABSTRACT:
A door lock system (20) comprising a door frame (22) mounted in an entry (24) of a building (26). An entrance door (28) is hinged at (30) along one side edge to the door frame (22). The entrance door (28) has a standard door lock unit (32) to engage with the door frame (22). A structure (34) is built into the entrance door (28), for engaging with the door frame (22) at a number of other locations thereabout, so that the entrance door (28) will be strengthened against a forced entry. An assemblage (36) is built into the entrance door (28), for retaining the engaging structure (34) to the door frame (22) in a releasing manner. When a person wants to open the entrance door (28) with the stand and a door lock unit (32), the retaining assemblage (36) must first be deactivated to allow the engaging structure (34) to disengage from the door frame (22).

REFERENCES:
patent: 636325 (1899-11-01), Eyster
patent: 1179731 (1916-04-01), McDonald
patent: 1319603 (1919-10-01), Monfet
patent: 1366015 (1921-01-01), Morris
patent: 1567811 (1925-12-01), Murphy
patent: 1634933 (1927-07-01), Dalton
patent: 2066705 (1937-01-01), Vazquez
patent: 3464728 (1969-09-01), Ruckel et al.
patent: 4534192 (1985-08-01), Harshbarger et al.
patent: 5375894 (1994-12-01), Schlack
patent: 5794467 (1998-08-01), Justice

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