Communications: electrical – Systems – Plural
Patent
1988-10-25
1989-11-14
Crosland, Donnie L.
Communications: electrical
Systems
Plural
340384R, 340384E, 340500, 340508, G08B 2700
Patent
active
048810584
ABSTRACT:
A combination audio and visual alarm system for selectively generating either audible, or visual, or combined audible and visual alarm signals, including a sound transducer device having a blocking capacitor connected thereto, a polarity-responsive electrical lamp, and a two-conductor circuit connected with the sound transducer device and with the lamp. In addition, there is a source of d. c. and a source of audio signals. A switch connects the two-conductor circuit to either the d.c. source or the audio source, thereby to enable simultaneous operation of the sound transducer and the lamp upon energization of the circuit by the source of audio, or to enable sole operation of the lamp when the circuit is energized by d.c.
REFERENCES:
patent: 3309685 (1967-03-01), Manning
patent: 3311831 (1967-03-01), Leppert
patent: 3448447 (1969-06-01), Tetherow
patent: 3531594 (1970-09-01), Dickerson
patent: 3569964 (1971-03-01), Mande
patent: 3611362 (1971-10-01), Scott
patent: 3618081 (1971-11-01), Morrow
patent: 3656158 (1972-04-01), Goodwater
patent: 3711854 (1973-01-01), Reynolds et al.
patent: 3906491 (1975-09-01), Gosswiller et al.
patent: 3912883 (1975-10-01), Goodyear
patent: 3936821 (1976-02-01), Cooper et al.
patent: 3964047 (1967-06-01), Antonaccio
patent: 4101880 (1978-07-01), Haus
patent: 4258332 (1981-03-01), West
patent: 4274084 (1981-06-01), Haus
patent: 4703312 (1987-10-01), Berry, III
Audiosone, Inc.
Crosland Donnie L.
Lehmann H. Gibner
Lehmann K. Gibner
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