Method of adjusting air gap of an electric horn

Details Method of adjusting air gap of an electric horn Method of adjusting air gap of an electric horn

1981-02-23

1982-12-07

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Electrical device making

291695, 29407, 29526R, 116142R, 179114R, H04R 3100

Patent

active

043619525

ABSTRACT:
The invention pertains to an electric diaphragm horn and the method of air gap adjustment wherein the horn utilizes an electric coil mounted with a housing which includes a pole piece; a diaphragm being mounted upon the housing including a plunger to be spaced from the pole piece at a predetermined dimension to produce the desired sound output level. The housing bottom wall is deformed to an extent determined by measurements relative to the housing diaphragm mounting surface whereby assembly of the diaphragm to the housing produces a uniform gap between the pole piece and plunger resulting in a consistency of assembled dimensions. Further, the invention includes an electric horn construction utilizing a diaphragm wherein the motor chamber is vented to the atmosphere through a projector mounted upon the horn housing.

REFERENCES:
patent: 1790004 (1931-01-01), Dorsey
patent: 2677875 (1954-05-01), White et al.
patent: 3396449 (1968-08-01), Brantner
patent: 3412219 (1968-11-01), Karau
patent: 3516088 (1970-06-01), Allport
patent: 3566509 (1971-03-01), Caparone et al.
patent: 3800393 (1974-04-01), Katchka
patent: 4116158 (1978-09-01), Warnod
patent: 4124931 (1978-11-01), Miele, Jr.
patent: 4134200 (1979-01-01), Frigo
patent: 4135473 (1979-01-01), Frigo

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