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:
Feb. 12, 1985
Filed:
Mar. 30, 1983
Elmer J Cerny, Des Plaines, IL (US);
Beltone Electronics Corporation, Chicago, IL (US);
Abstract
An improved nubbin and acoustic damper for the elimination or production of resonance in the sound transmission tubing of a hearing aid. The nubbin and nubbin sound conduit include a right angle corner. The damper comprises a plug having three body portions: a plug portion that is insertable into the conduit, a longer diameter block attached to the plug portion and forming a shoulder therewith that limits movement of the damper into the nubbin, and a plate attached to the block and being of greater diameter than the block. The damper has parallel grooves for sound transmission in its outer surface, with the grooves longitudinally and continuously through the plug portion, block and plate.