Door safety latch

Closure fasteners – Extension link

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

16144, 292269, E05C 1716

Patent

active

040625788

ABSTRACT:
A door safety latch permitting the partial opening of a door consisting of an arcuate lug mounted on the door, and having an enlarged ball portion mounted on the end thereof, with a fastening member mounted in the door frame having a pivoted yoke portion whose spaced apart leg portions prevent the ball portion of the lug from passing therethrough. At the pivoted end of the yoke portion, the leg portions are sufficiently spaced apart to permit the ball portion to pass therethrough. When the door is in a closed position and the safety latch swung to the position to permit only a partial opening of the door, the arcuate lug will extend through the space between the leg portions. In order to prevent the pivoting of the yoke by a person on the outside of the door, as by a burglar, means are provided offering frictional resistance to the turning movement of the yoke so that he is unable to cause the yoke to swing from its door locking position to the position that permits the door to open to its completely open position.

REFERENCES:
patent: 372326 (1887-11-01), Palmenberg
patent: 534716 (1895-02-01), Hillgendorf
patent: 1497500 (1924-06-01), Gorowitz
patent: 2097349 (1937-10-01), Sladek

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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

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

Rate now

     

Profile ID: LFUS-PAI-O-486234

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.