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Patent Searching and Data


Title:
SPEAKER DEVICE, AND METHOD AND DEVICE FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2002/032187
Kind Code:
A1
Abstract:
A diaphragm supporting frame member (1) of paper is formed by a paper making using liquid paper material as a raw material, and a center hole for a voice coil and an air pressure release hole (1a) for discharging into the outside the air pressure in the rear by the vibration of the diaphragm are formed during the paper making, the frame member (1) of paper being used to produce a speaker device.

Inventors:
Yamada, Teruho c/o Mitsubishi Denki Kabushiki Kaisha 2-3 (Marunouchi 2-chome Chiyoda-ku, Tokyo, 100-8310, JP)
Kawahara, Masahiko (4-17, Segawa 4-chome Minoo-shi, Osaka, 562-0045, JP)
Sugimoto, Yukio (822-3 Sakamoto Shimada-Shi, Shizuoka, 427-0111, JP)
Mori, Seiji c/o Foster Electric Co. (Ltd. 512 Miyazawa-cho Akishima-shi, Tokyo, 196-8550, JP)
Iwasaki, Toshikazu c/o Foster Electric Co. (Ltd. 512 Miyazawa-cho Akishima-shi, Tokyo, 196-8550, JP)
Application Number:
PCT/JP2000/006999
Publication Date:
April 18, 2002
Filing Date:
October 06, 2000
Export Citation:
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Assignee:
MITSUBISHI DENKI KABUSHIKI KAISHA (2-3 Marunouchi 2-chome Chiyoda-ku, Tokyo, Tokyo, 100-8310, JP)
MORITO CO., LTD. (2-4 Minami Hommachi 4-chome, Chuo-ku Osaka-shi, Osaka, 541-0054, JP)
FUJI CONE SEISAKUSHO CO., LTD. (10-4, Horinouchi 1-chome Fujieda-shi, Shizuoka, 426-0088, JP)
FOSTER ELECTRIC CO., LTD. (512 Miyazawa-cho Akishima-shi, Tokyo, 196-8550, JP)
Yamada, Teruho c/o Mitsubishi Denki Kabushiki Kaisha 2-3 (Marunouchi 2-chome Chiyoda-ku, Tokyo, 100-8310, JP)
Kawahara, Masahiko (4-17, Segawa 4-chome Minoo-shi, Osaka, 562-0045, JP)
Sugimoto, Yukio (822-3 Sakamoto Shimada-Shi, Shizuoka, 427-0111, JP)
Mori, Seiji c/o Foster Electric Co. (Ltd. 512 Miyazawa-cho Akishima-shi, Tokyo, 196-8550, JP)
Iwasaki, Toshikazu c/o Foster Electric Co. (Ltd. 512 Miyazawa-cho Akishima-shi, Tokyo, 196-8550, JP)
International Classes:
D21J7/00; H04R1/00; H04R1/02; H04R9/06; H04R31/00; (IPC1-7): H04R9/02; H04R31/00
Foreign References:
JPS5811388U
JPS5784700A
JPS5784700A
US2411066A
Other References:
See also references of EP 1235462A1
Attorney, Agent or Firm:
Tazawa, Hiroaki (7F Daito Bldg. 7-1, Kasumigaseki 3-chome. Chiyoda-ku, Tokyo, 100-0013, JP)
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