Tone generator

Details Tone generator Tone generator

1979-07-13

1981-08-18

Brown, Thomas W.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

179119R, 340391, G10K 914, H04R 102, H04R 1300

Patent

active

042848571

ABSTRACT:
An electromagnetic tone generator having a pole piece adapted to be mounted on a circuit board and to be incorporated in the circuitry thereof, an electromagnetic coil sub-assembly adapted for mounting on a coil carrying portion of the pole piece and to be separately fastened electrically and physically to the circuit board, and a sound transducer sub-assembly including a housing defining a sound cavity and a diaphragm closing the latter and held by a retainer ring detachably fastened to the housing, the sound transducer sub-assembly adapted to be tested for sound prior to assembly and for mounting on and detachable connection with the pole piece, the retainer ring being detachably fastened to the housing so that in the disassembled condition of the sound transducer sub-assembly the ring is readily removable for replacement or servicing of critical parts of the sub-assembly, and in the assembled condition of the sound transducer sub-assembly the latter is held by the pole piece spaced from the circuit board to accommodate electrical components of the latter and with the diaphragm precisely spaced from the coil carrying portion of the pole piece.

REFERENCES:
patent: 1252056 (1918-01-01), Tannaka
patent: 1665045 (1928-04-01), Swenson
patent: 1698408 (1929-01-01), Johnson
patent: 2902668 (1959-09-01), Savit
patent: 3179932 (1965-04-01), Gregoroff
patent: 4016376 (1977-04-01), Neuhoff
patent: 4160132 (1979-07-01), Rea et al.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-39338