Burglar alarm for doors

Details Burglar alarm for doors Burglar alarm for doors

1976-07-01

1977-09-27

Swisher, S. Clement

Signals and indicators

Alarms

Burglar

92 5R, 116 65, G08B 1308

Patent

active

040504026

ABSTRACT:
A warning device to discourage the unauthorized entering of doors and windows utilizing a spring contracted bellows held in an extended condition by anchor means associated with building closure structure. Upon the opening of the associated door or window one of the anchor means is released permitting the bellows to be rapidly contracted producing an audible sound by means of a vibratable reed to warn the occupant and discourage the intruder from further entry.

REFERENCES:
patent: 1367651 (1921-02-01), Ashley
patent: 3618557 (1971-11-01), Merriman
patent: 3774572 (1973-11-01), Borraccio
patent: 3952688 (1976-04-01), Merriman

Affiliated with

Also associated with

Rating

Burglar alarm for doors does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1808454