Robbery alarm switch

Details Robbery alarm switch Robbery alarm switch

1987-02-17

1988-04-12

Goldberg, E. A.

Electricity: magnetically operated switches, magnets, and electr

Permanent magnet-actuated switches

Plural magnets

335205, 340574, H01H 900

Patent

active

047377518

ABSTRACT:
Robbery alarm switch having two independently manually engageable plungers that must be substantially simultaneously moved by a cashiering accostee to actuate a summoning alarm. The robbery alarm switch includes at least one internally housed reedswitch connected in electrically intervening relationship to the summoning alarm. The two independently manually engageable plungers are respectively provideable with an addendum source of magnetic flux (e.g. a permanent magnet) so that, when the two plungers are together independently moved teamwise from normal first-station to second-station, the two magnetic flux sources act in concert to change the distance between the reeds of every electrically intervening reedswitch and thereby actuate the summoning alarm. Included among various optional features are: a supervisorily releasable housed latch extending between the two plungers; attaching the housed reedswitch to one of the two teamwise plungers; etc.

REFERENCES:
patent: 2010233 (1935-08-01), Hopkins et al.
patent: 4453148 (1984-06-01), Norakidze et al.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1432010