Door lock system

Details Door lock system Door lock system

1996-10-03

1997-12-30

Meyers, Steven N.

Closure fasteners

Bolts

Emergency operating means

292 21, 292DIG60, E05B 6510

Patent

active

057021341

ABSTRACT:
A door lock system including a control mechanism transversely mounted in a door in the middle, a transmission mechanism mounted in one hollow stile at one lateral side of the door and coupled to one end of the control mechanism at right angles, a top latch assembly and a bottom latch assembly respectively fastened to the hollow stile at difference elevations and driven by the control mechanism through the transmission mechanism to secure to the door to a doorframe, the top latch assembly including a shell fixed to the hollow stile on the inside, a frame mounted inside the shell, a latch bolt pivoted to the shell, a push member pivoted to the frame and driven to move the latch bolt, an adjustment device driven by the transmission mechanism to move the push member, and a locating device mounted in the frame and controlled by a fine adjustment device to secure the actuating device to the frame.

REFERENCES:
patent: 4881765 (1989-11-01), Heid
patent: 5042851 (1991-08-01), Hunt
patent: 5088786 (1992-02-01), Linder
patent: 5154454 (1992-10-01), Hollaway
patent: 5427420 (1995-06-01), Moore
patent: 5527074 (1996-06-01), Yeh

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