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2 и и и и и 1, 1 patent application 1 'November 1949: Patent Secretary of Japan Patent Office
Hidetoshi Saito 1, title of invention 2, inventor 3, Patent applicant address Osaka Prefecture
Kadoma City Ojadomon Address: 1006 Address: 6-23, Gamo-cho, Nakano-ku, Tokyo Telephone
(03) (382) 5531-First, Name (6791) Patent Attorney Hori-(1 other person) [Phase] Japan Patent
Office ? Japanese Patent Application Laid-Open No. 51-620330. (1976) 5.29 Japanese Patent
Application No. ?gua '/, J, I: P70 [phase] exit-Nissho l?, (197J1.) / /, Z! Examination request
available (all three pages) Office internal reference number Megume / / ? specification 1 name
of invention 1 name of invention speaker
Hereinafter, the present invention will be described in detail with reference to the drawings. FIG.
2 shows a first embodiment, in which a filling portion 4ff which also serves as an adhesive
portion is provided between the voice coil bobbin 2 and the diaphragm 1, and an inorganic filler
is provided in the filling portion 4. When solidifying, etc., <> EndPage: 1 Fill with a light and rigid
material. In the first embodiment, the filler doubles as an adhesive for the voice coil bobbin 2 and
the diaphragm 1. According to the second embodiment shown in FIG. 3, a letter-shaped filler
WB5 as shown in FIG. 3 is provided at the diaphragm rising portion, and the filler is filled in the
filler portion and solidified. In the example of the real office shown in FIG. 4, the filler is applied
to the outside of the diaphragm rising portion. The dome speaker has a high frequency limit
frequency determined by the shape and material of the diaphragm, and the output sound
pressure level is rapidly decaying above that frequency, but the first, second and third as
described above By the structure I and L as in the embodiment, the frequency is dramatically
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view of a conventional dome
speaker, and FIG. 2, FIG. 6 and FIG. 4 show a side sectional view of a dome speaker according to
the present invention. DESCRIPTION OF SYMBOLS 1 иии Dome, 2 иииииии Voice coil bobbin, 6
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Filled Section or application section,
embedded patent attorney Hori Hika-agent patent attorney Toshihiro Watanabe 9EndPage: 25,
list of attached documents (1) one letter of attorney (2) one statement (3) one drawing (4) 1)
Applicants and other applicants, patent applicants or agents (1) Inventor's address Osaka
Prefecture Kadoma city Ogata Kamon 1006 Matsushita Electric Industrial Co., Ltd. (2) Agent's
address Tokyo Nakano Ward Town 5th Street 6th Station Telephone (03) (382) 5531 2-9-. Name
(6580) Patent Attorney Tadashi Watanabe EndPage: ?
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