Door with locking device

Details Door with locking device Door with locking device

1982-09-03

1984-11-06

Holko, Thomas J.

Closure fasteners

Bolts

Swinging

292207, 292244, 70DIG11, E05C 316

Patent

active

044808631

ABSTRACT:
A latch assembly for use in combination with slidable doors is disclosed. A rotatable disk is connected to the door so that the plane of the disk is perpendicular to the door and parallel to the direction of door movement. A lock bolt which projects from the door jam is adapted to engage a slot in the disk as the door closes, causing the disk to rotate. As the disk rotates, it slides with respect to a spring loaded latch bolt until the bolt slides through a second slot in the disk, when the door is fully closed. Efforts to effectuate a forced entry of the door cause the resulting forces to be passed primarily between the disk and the lock bolt, while the latch bolt's primary function is to prevent rotation of the disk. Thus, an attempted forced entry will not cause excessive forces to be placed on the latch bolt. The latch bolt is slidably connected to a conventional manually operated garage door handle assembly including a lock.

REFERENCES:
patent: 1909697 (1933-05-01), MacBeth et al.
patent: 1912829 (1933-06-01), Crume
patent: 2309437 (1943-01-01), Blodgett
patent: 2795448 (1957-06-01), Johnson
patent: 3506292 (1970-04-01), Hagendoorn et al.
patent: 4051960 (1977-10-01), Raksanyi

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