Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate
2008-04-22
2008-04-22
Ensey, Brian (Department: 2615)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
C381S324000
Reexamination Certificate
active
10867340
ABSTRACT:
A transducer suitable for use as a microphone or receiver in a hearing aid has a housing and a diaphragm disposed within the housing. A motor assembly is also disposed within the housing and operatively coupled to the diaphragm. The motor assembly includes a magnet assembly having a magnetic yoke forming a channel and a drive magnet disposed within the channel.
REFERENCES:
patent: 3935398 (1976-01-01), Carlson et al.
patent: 4901293 (1990-02-01), Kuhn
patent: 5193116 (1993-03-01), Mostardo
patent: 5647013 (1997-07-01), Salvage et al.
patent: 5960093 (1999-09-01), Miller
patent: 6041131 (2000-03-01), Kirchhoefer et al.
patent: 6150911 (2000-11-01), Katznelson et al.
patent: 6600400 (2003-07-01), Andou et al.
patent: 6909613 (2005-06-01), Augustijn et al.
patent: 2002/0136425 (2002-09-01), Warren
patent: 2003/0190053 (2003-10-01), van Halteren
“Carpenter High Permeability “49” Alloy”, CARPENTER Specialty Alloys, 7 pages, 1992.
“Standard Specifications for Permanent Magnet Materials”; MMPA Standard No. 100-00, Magnetic Materials Producers Association, 28 pages, 1964.
“Rare-Earth Permanent Magnets, Vacodym • Vacomax,” Internet Article, XP-002317685, www.vacuumschmelze.de, 2003, 48 pages.
“Soft Magnetic Cobalt-Iron-Alloys, Vacoflux 48 • Vacoflux 50 • Vacodur 50 • Vacoflux 17,” Internet Article, XP-002317686, www.vacuumschmelze.de, 2001, 7 pages.
International Search Report for Application No. PCT/US04/018570 dated Mar. 11, 2005.
Llamas-Young Evan
Miller Thomas E.
Ensey Brian
Knowles Electronics LLC.
Marshall & Gerstein & Borun LLP
LandOfFree
Magnetic assembly for a transducer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic assembly for a transducer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic assembly for a transducer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3952334