Safety door latch bolt

Details Safety door latch bolt Safety door latch bolt

1991-09-25

1992-08-25

Nicholson, Eric K.

Closure fasteners

Bolts

Sliding

29216914, E05C 116

Patent

active

051412683

ABSTRACT:
A safety door latch bolt for use in doors or the like that prevent accidental and unintentional locking of the door. The safety door latch bolt functions in all other respects as a typical standard door lock while providing a fail safe locking mechanism that automatically unlocks the door latch upon closure through the use of an improved locking element and safety release tongue pin.

REFERENCES:
patent: 1700487 (1929-01-01), Crammer
patent: 2233353 (1941-02-01), Meer et al.
patent: 2263477 (1941-11-01), Voight
patent: 2423988 (1947-07-01), Lickteig
patent: 2435238 (1948-02-01), Schlage
patent: 2454672 (1948-11-01), Rosenthal et al.
patent: 2473080 (1949-06-01), Vander Henst
patent: 2503192 (1950-04-01), Cerf, Jr.
patent: 2593573 (1952-04-01), Kulbersh
patent: 2828152 (1958-03-01), Unetic et al.
patent: 4479671 (1984-10-01), Colombo

Affiliated with

Also associated with

Rating

Safety door latch bolt does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Safety door latch bolt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety door latch bolt will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-380269