The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1982
Filed:
Feb. 23, 1981
James A Neese, Flora, IL (US);
Sparton Corporation, Jackson, MI (US);
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.