Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate
2006-05-02
2006-05-02
Tran, Sinh (Department: 2646)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
C381S412000
Reexamination Certificate
active
07039213
ABSTRACT:
An electro-mechanical transducer, including a magnetic assembly producing a magnetic field having two or more displaced regions of greater intensity, having magnetic flux in substantially similar directions, separated by and surrounded by regions of lower intensity magnetic field, and an electrically conductive and mobile member disposed in and capable of moving through a magnetic field.
REFERENCES:
patent: 3201529 (1965-08-01), Suhr
patent: 3310639 (1967-03-01), Collins
patent: 3803522 (1974-04-01), Rooney
patent: 3983337 (1976-09-01), Babb
patent: 4017694 (1977-04-01), King
patent: 4188711 (1980-02-01), Babb
patent: 4225756 (1980-09-01), Babb
patent: 4327257 (1982-04-01), Schwartz
patent: 4334127 (1982-06-01), Shimada et al.
patent: 4661973 (1987-04-01), Takahashi
patent: 4783824 (1988-11-01), Kobayashi
patent: 4914707 (1990-04-01), Kato et al.
patent: 4980921 (1990-12-01), Zwicky
patent: 5119431 (1992-06-01), Hamby
patent: 5151943 (1992-09-01), Van Gelder
patent: 5550332 (1996-08-01), Sakamoto
patent: 5664024 (1997-09-01), Furuta et al.
patent: 5740265 (1998-04-01), Shirakawa
patent: 5748759 (1998-05-01), Croft et al.
patent: 5748760 (1998-05-01), Button
patent: 5832096 (1998-11-01), Hall
patent: 6269168 (2001-07-01), Tagami
patent: 2002/0039431 (2002-04-01), Chang
patent: 2003/0152246 (2003-08-01), Tanabe
Hyre David E.
Wiggins Daniel C.
Dabney Phylesha L
Jensen & Puntigam PS
Tran Sinh
LandOfFree
Speaker driver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Speaker driver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speaker driver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3531423