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:
May. 22, 2007
Filed:
Feb. 21, 2006
Walter P. Sjursen, Washington Crossing, PA (US);
Marvin A. Leedom, Princeton, NJ (US);
Derek D. Mahoney, Manalapan, NJ (US);
John M. Margicin, Levittown, PA (US);
Frederick J. Fritz, Skillman, NJ (US);
John G. Aceti, Mercer, NJ (US);
David A. Preves, Princeton Junction, NJ (US);
Ponnusamy Palanisamy, Lansdale, PA (US);
Walter P. Sjursen, Washington Crossing, PA (US);
Marvin A. Leedom, Princeton, NJ (US);
Derek D. Mahoney, Manalapan, NJ (US);
John M. Margicin, Levittown, PA (US);
Frederick J. Fritz, Skillman, NJ (US);
John G. Aceti, Mercer, NJ (US);
David A. Preves, Princeton Junction, NJ (US);
Ponnusamy Palanisamy, Lansdale, PA (US);
Sarnoff Corporation, Princeton, NJ (US);
Abstract
A disposable-type hearing aid uses a relatively large single diaphragm or a large single diaphragm subdivided into a plurality of smaller active diaphragm areas obtained using a grate-like back support plate with ridges which contact and divide the diaphragm into the several smaller active diaphragm areas. The diaphragm and a backplate are enclosed in a metal housing and are disposed proximal and parallel to a shell-like hearing aid enclosure having sound inlets. The metal housing is closed at an end opposite the sound inlets by a printed circuit board (PCB) forming an acoustical seal for a back volume of the microphone. The PCB also carries substantially all the electronic components for the hearing aid thereon. The PCB has a ground plane in contact with the housing whereby the PCB also acts as an EMI shield. An electrical connection is formed in various ways between the back support plate and the PCB during assembly of the metal housing and components with the PCB. Mass production of disposable hearing aids with large diaphragms and relatively low noise levels is thus possible using this invention.