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61. 发明授权

US1828046A Method of producing carbon granules 失效
标题翻译：生产碳颗粒的方法
公开(公告)号：US1828046A
公开(公告)日：1931-10-20
申请号：US26950328
申请日：1928-04-12
申请人： WESTERN ELECTRIC CO
发明人： SAMUEL HOWARD RUSSELL
IPC分类号： H04R21/00
CPC分类号： H04R21/00

62. 发明授权

US1646389A Granular carbon and process of making the same 失效
公开(公告)号：US1646389A
公开(公告)日：1927-10-25
申请号：US1646389D
IPC分类号： H04R21/00
CPC分类号： H04R21/00

63. 发明专利

JPS6115597B2 JPS6115597B2 - 失效
公开(公告)号：JPS6115597B2
公开(公告)日：1986-04-24
申请号：JP14359378
申请日：1978-11-22
申请人： Intaanashonaru Sutandaado Erekutoritsuku Corp
发明人： JON KURISUTOFUAA GURIINUTSUDO
IPC分类号： H04R21/00 , H01L29/84 , H04R21/02
CPC分类号： H04R21/02

64. 发明专利

JPS5937639B2 JPS5937639B2 - 失效
公开(公告)号：JPS5937639B2
公开(公告)日：1984-09-11
申请号：JP737180
申请日：1980-01-23
申请人： Nippon Telegraph & Telephone
发明人： TAKEDA AKITSU , MIZUSHIMA YOSHIHIKO , OCHI OSAMU , YOSHIKAWA AKIRA , OOGA TOSHIRO , SHIRAI SEIICHI
IPC分类号： H04R21/00 , H04R23/00
CPC分类号： H04R23/00

65. 发明专利

JPS5892200A TRANSDUCER 失效
公开(公告)号：JPS5892200A
公开(公告)日：1983-06-01
申请号：JP18998381
申请日：1981-11-27
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： WADA HIROTO
IPC分类号： H04R21/00 , H04R23/02
摘要： PURPOSE:To obtain a stable characteristic, by applying a voltage to a diaphragm formed with a synthetic resin having elasticity mixed with carbon particles and changing electric signals flowing to the diaphragm via the change in the resistance value of the diaphragm through the compression and expansion of the diaphragm. CONSTITUTION:Sound waves from a sound source drive a condencer microphone unit 18 arranged in front of a protector 16 to output an audio current to the primary winding T1 of a transformer T. Further, the sound waves from the sound source enter a case 11 through a hole 17 and oscillate an oscillation electrode 12. When the oscillation electrode 12 is oscillated, a conductive elastic body 15 of a coil spring fitting one end to an external electrode 14 is compressed and expanded. Since the conductive elastic substance 15 is formed by mixing carbon particles to silicon rubber, it has a good elasticity and a resistance value between both ends of the conductive elastic substance 15 is changed through the expansion and compression, and a current flowing between the external electrodes 13, 14 is changed according to the sound waves. As a result, the audio current flowing between the external electrodes 13, 14 flows to the primary winding T1 of the transformer T.

66. 发明专利

JPS5747126B2 失效
公开(公告)号：JPS5747126B2
公开(公告)日：1982-10-07
申请号：JP7220479
申请日：1979-06-11
IPC分类号： H04R21/00 , B03B5/00 , C01B31/02

67. 发明专利

JPS55167115A MANUFACTURE OF CARBON POWDER FOR TRANSMITTER 失效
公开(公告)号：JPS55167115A
公开(公告)日：1980-12-26
申请号：JP7220479
申请日：1979-06-11
申请人： OKI CERAMIC KOGYO KK
发明人： HIRABAYASHI HISAO , SAITOU MASAO
IPC分类号： H04R21/00 , B03B5/00 , C01B31/02
摘要： PURPOSE:To enhance the stability of carbon powder by wet screening pulverized anthracite powder and calcining appropriate particles. CONSTITUTION:Anthracite is pulverized, charged into an elutriation tank, and mixed with water while agitating. This mixture is passed through a screen together with a water jet and screened into appropriate particle size distributions. Anthracite powder having the desired particle size distribution is then calcined.

68. 实用新型

JPS5424995Y2 失效
公开(公告)号：JPS5424995Y2
公开(公告)日：1979-08-22
申请号：JP15043774
申请日：1974-12-13
IPC分类号： H01C10/32 , H01C10/00 , H04R21/00

69. 发明专利

JPS5482186A ELECTROACOUSTIC TRANSDUCER 失效
公开(公告)号：JPS5482186A
公开(公告)日：1979-06-30
申请号：JP14359378
申请日：1978-11-22
申请人： INT STANDARD ELECTRIC CORP
发明人： JIYON KURISUTOFUAA GURIINUTSUD
IPC分类号： H04R21/00 , H01L29/84 , H04R21/02

70. 发明专利

JPS5413772B2 失效
公开(公告)号：JPS5413772B2
公开(公告)日：1979-06-02
申请号：JP14845575
申请日：1975-12-15
IPC分类号： H04R21/00

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