Lock assembly having a bolt with an extending tang

Details Lock assembly having a bolt with an extending tang Lock assembly having a bolt with an extending tang

1994-03-03

1996-07-02

Cuomo, Peter M.

Closure fasteners

Bolts

Sliding

292 2, E05C 104

Patent

active

055314872

ABSTRACT:
A lock includes a first housing attached to a door and having an extendible latch bolt and further includes a second housing, or striker, attached to an adjacent doorjamb and including an inner slot for receiving the latch bolt. The latch bolt includes a generally flat inner surface and a convex outer, leading surface in facing relation to the adjacent doorjamb. Disposed on a distal end portion of the latch bolt's inner flat surface is a first projection, or tang, while disposed on an outer edge of the striker's inner slot is a second projection, or lip. With a given amount of "play", or free movement, of the door relative to the doorjamb, the door may be opened by urging the door outward and actuating a release knob in the first body for withdrawing the latch bolt from the striker and into the first housing, with clearance provided between the latch bolt's tang and the striker's inner lip. When an attempt is made to release the lock from outside by engaging the latch bolt's convex outer leading surface with a thin, flat, semi-rigid element such as a plastic card, or metal blade, in urging the latch bolt to the retracted position within the first housing, the "play" in the door allows for inward displacement of the latch bolt causing the latch bolt's outer tang to engage the striker's inner lip. This prevents retraction of the latch bolt and opening of the lock.

REFERENCES:
patent: 1901412 (1933-03-01), Richter
patent: 2039048 (1936-04-01), Agterberg
patent: 3414307 (1968-12-01), Russell
patent: 3948550 (1976-04-01), Vigluicci et al.

Affiliated with

Also associated with

Rating

Lock assembly having a bolt with an extending tang does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lock assembly having a bolt with an extending tang, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lock assembly having a bolt with an extending tang will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1500787