Electronic warning apparatus

Details Electronic warning apparatus Electronic warning apparatus

1987-03-09

1989-01-03

Orsino, Joseph A.

Communications: electrical

Audible indication

Diaphragm

181144, 381156, G10K 1102

Patent

active

047960094

ABSTRACT:
The outdoor alerting and warning device of this invention comprises numerous electronic drivers and an axially shallow drum-shaped resonance chamber having an inside diameter equal to a whole-number multiple of one-quarter of the wavelength of a sound wave of predetermined frequency. The drivers are mounted on the exterior of the resonance chamber, on its peripheral portion at regular circumferential intervals around it, with their ports opening into its interior. A coaxial outlet port in one end wall of the resonance chamber, having an area of between one-half and two times the total of driver port areas, opens into the throat of a horn; or each end wall may have such an outlet port, each opening into a horn throat.

REFERENCES:
patent: 4700177 (1987-10-01), Nakashima

Affiliated with

Also associated with

Rating

Electronic warning apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2170754