Loudspeaker

Details Loudspeaker Loudspeaker

2004-08-13

2008-11-04

Donovan, Lincoln (Department: 2837)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S423000, C381S396000, C381S150000

Reexamination Certificate

active

07447328

ABSTRACT:
A loudspeaker includes a diaphragm, an edge, and a voice coil. The diaphragm includes a groove having a concave cross section. Also, the diaphragm is in a horizontally or vertically elongated shape. The edge is coupled to an outer circumference of the diaphragm, and has a roughly half-round shaped cross section. The voice coil is bonded to the groove. The voice coil is thicker than a depth of the groove. Also, the voice coil has a cross section in which a dimension in a direction along a plane of the diaphragm is longer than a dimension in a direction perpendicular to the plane of the diaphragm.

REFERENCES:
patent: 2392143 (1946-01-01), Graham
patent: 2657758 (1953-11-01), Varnet
patent: 2775653 (1956-12-01), Wurdel
patent: 4088847 (1978-05-01), Yukimoto et al.
patent: 4376233 (1983-03-01), Kamon et al.
patent: 5472736 (1995-12-01), Barr et al.
patent: 5664024 (1997-09-01), Furuta et al.
patent: 5764784 (1998-06-01), Sato et al.
patent: 5862242 (1999-01-01), Takewa et al.
patent: 6154556 (2000-11-01), Takahashi et al.
patent: 6341167 (2002-01-01), Okuyama et al.
patent: 6370257 (2002-04-01), Bleim et al.
patent: 6636612 (2003-10-01), North et al.
patent: 6654475 (2003-11-01), Nakaso
patent: 6714655 (2004-03-01), Iwasa et al.
patent: 6757404 (2004-06-01), Takewa et al.
patent: 6771792 (2004-08-01), Shirakawa
patent: 6801634 (2004-10-01), Button
patent: 6920957 (2005-07-01), Usuki et al.
patent: 6925191 (2005-08-01), Petroff et al.
patent: 7095869 (2006-08-01), Button
patent: 2001/0017922 (2001-08-01), Kim
patent: 2001/0017928 (2001-08-01), Sugiyama et al.
patent: 2002/0039430 (2002-04-01), Nakaso
patent: 2002/0067842 (2002-06-01), Takahashi et al.
patent: 2003/0081808 (2003-05-01), Kemmerer
patent: 2003/0216080 (2003-11-01), Schmitt et al.
patent: 2004/0038500 (2004-02-01), Larson et al.
patent: 2004/0081331 (2004-04-01), Ando et al.
patent: 2004/0218779 (2004-11-01), Fukuyama et al.
patent: 2004/0264731 (2004-12-01), Nakamura et al.
patent: 2005/0041830 (2005-02-01), Takewa et al.
patent: 2005/0152577 (2005-07-01), Nishimura et al.
patent: 2005/0175205 (2005-08-01), Takahashi
patent: 2005/0226456 (2005-10-01), Tabata et al.
patent: 2005/0271236 (2005-12-01), Kobayashi et al.
patent: 2005/0286729 (2005-12-01), Harwood et al.
patent: 2006/0002578 (2006-01-01), Kim et al.
patent: 2006/0034479 (2006-02-01), Oshika et al.
patent: 2006/0062422 (2006-03-01), Ono et al.
patent: 2006/0072248 (2006-04-01), Watanabe et al.
patent: 2006/0078154 (2006-04-01), Yang
patent: 2006/0088184 (2006-04-01), Ohashi et al.
patent: 2006/0110001 (2006-05-01), Saint Vincent et al.
patent: 2006/0153420 (2006-07-01), Takase et al.
patent: 2007/0009133 (2007-01-01), Gerkinsmeyer
patent: 952 649 (1956-11-01), None
patent: 1 174 364 (1964-07-01), None
patent: 1 930 590 (1970-12-01), None
patent: 1 003 350 (2000-05-01), None
patent: 1 128 705 (2001-08-01), None
patent: 1 194 003 (2002-04-01), None
patent: 2 114 855 (1983-08-01), None
patent: 58119298 (1982-01-01), None
patent: 57-039697 (1982-03-01), None
patent: 59-032294 (1984-02-01), None
patent: 5-38639 (1993-05-01), None
patent: 407288894 (1995-10-01), None
patent: 08-140185 (1996-05-01), None
patent: 10-191494 (1998-07-01), None
patent: 2003-320919 (2002-11-01), None

Affiliated with

Also associated with

Rating

Loudspeaker does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Loudspeaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Loudspeaker will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4047997