Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1976-06-16
1978-02-14
Swann, III, Glen R.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
340224, 340164A, H04B 700
Patent
active
040742695
ABSTRACT:
A burglar alarm generator is electrically connected to a conventional remote control automatic garage door opener to provide a visual and/or audible signal to deter potential burglars from the residence. The alarm generator (such as a siren or the like capable of providing a loud noise) is activated on command from a remote control transmitter typically used with automatic garage door openers. Circuitry within the alarm generator provides the capability to electrically bypass the alarm for operation of the opener in its normal mode. The alarm generator is capable of being energized and activated from within the residence.
REFERENCES:
patent: 3445848 (1969-05-01), Goldstein
patent: 3795896 (1974-03-01), Isaacs
patent: 3969709 (1976-07-01), Isaacs et al.
patent: 3971028 (1976-07-01), Funk
Cavanaugh Lawrence A.
Swann III Glen R.
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