Lock bolt with a warped contact surface

Details Lock bolt with a warped contact surface Lock bolt with a warped contact surface

1992-04-06

1993-02-23

Nicholson, Eric K.

Closure fasteners

Bolts

Swinging

292201, 292198, E05C 108

Patent

active

051884046

ABSTRACT:
A lock bolt designed to mount in a door jamb, and designed for use in applications such as penal institutions. The lock bolt has two warped surfaces that are exposed to a closing door. The door contacts the first warped surface along a length of that surface, forcing the lock bolt back into a housing. The two warped surfaces are designed such that the door never contacts the second surface. Therefore, the design allows for greater protrusion and greater width of the lock bolt.

REFERENCES:
patent: 176887 (1876-05-01), Peer
patent: 2848263 (1958-08-01), Miller
patent: 3087749 (1963-04-01), Capton
patent: 3279837 (1966-12-01), Stoppenbach
patent: 3811719 (1974-05-01), McBurme et al.
patent: 3861727 (1975-01-01), Froerup et al.
patent: 3910617 (1975-10-01), Scalza et al.
patent: 4056276 (1977-11-01), Jarvis
patent: 4216986 (1980-08-01), McNinch et al.
patent: 4237711 (1980-12-01), Kambic
patent: 4881766 (1989-11-01), Schmidt et al.
R. R. Brink Locking Systems Model 3020 Technical Information 6 pages, Jul. 1983.
R. R. Brink Locking Systems 1000 Series High Security Mortise Locks.

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