Binary alarm

Details Binary alarm Binary alarm

1980-11-28

1982-05-04

Pitts, Harold I.

Communications: electrical

Audible indication

Ultrasonic pest control

340384R, G08B 310

Patent

active

043284850

ABSTRACT:
An audible alarm device comprising a transducer which resonates at its natural frequency in an alarm mode to produce an alarm tone, this same transducer being driven, e.g. in a "ready" mode, by a non-resonant background signal generator in the manner to produce background sound of relatively low intensity which can indicate that the alarm circuit is functioning but is not in its alarm mode.

REFERENCES:
patent: 3277465 (1966-10-01), Potter
patent: 3311868 (1967-03-01), Cupp
patent: 3447151 (1969-05-01), Potter
patent: 3534363 (1970-10-01), Ausband
patent: 3721840 (1973-03-01), Yamada
patent: 3815129 (1974-06-01), Sweany
patent: 3825836 (1974-07-01), Pyles
patent: 3879726 (1975-10-01), Sweany
patent: 3890612 (1975-06-01), Sweany
patent: 4047377 (1977-09-01), Banks

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-883948