Communications: electrical – Systems – Call station
Patent
1976-03-29
1977-02-15
Swann, III, Glen R.
Communications: electrical
Systems
Call station
307 40, 361171, G08B 1308
Patent
active
040084655
ABSTRACT:
An anti-theft system for guarding a premises and providing entry thereto, includes a selector switch device which has both a plurality of buttons and a rotary dial with a plurality of numbered positions. The rotary dial is preset for a specific number corresponding to each button. The buttons are arranged to be depressed in a predetermined sequence. The dial must be positioned at the preset number and the corresponding button depressed in order to disengage the alarm. For each button, the proper positioning of the dial followed by the depressing of that button energizes the next button in the sequence. When the final dial position and corresponding button is depressed, the window, door, or the like, will be opened. The wrong sequence of buttons or the wrong position on the dial for its corresponding button, will immediately cause the alarm to be reset. The selector switch device can be located exterior of the premises for entry into the premises, and a number of similar selector switch devices can be located interior of the building to open the general premises, or to open particular windows, doors or the like, within the premises.
REFERENCES:
patent: 2606237 (1952-08-01), Chase
patent: 3538501 (1970-11-01), Nance
patent: 3587484 (1971-06-01), Munton
patent: 3600637 (1971-08-01), Bergkvist
Miller Richard L.
Swann III Glen R.
LandOfFree
Keyless anti-theft entry system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Keyless anti-theft entry system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Keyless anti-theft entry system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1439275