公开(公告)号：US5668886A

公开(公告)日：1997-09-16

申请号：US662291

申请日：1996-06-13

Applicant: Yoshio Sakamoto ,  Shuhei Ohta

Inventor： Yoshio Sakamoto ,  Shuhei Ohta

IPC: H04R7/20 ,  H04R7/04 ,  H04R9/02 ,  H04R9/04 ,  H04R25/00

CPC classification number: H04R7/04 ,  H04R9/025 ,  H04R2499/13

Abstract: A high performance loudspeaker structure is provided which is of reduced thickness yet resistible to large vibration amplitudes. A repulsion magnetic circuit is formed by two magnets with the same poles being faced each other and a center plate interposed between the two magnets. The repulsion magnetic circuit is held in position by two frames. A diaphragm is mounted at the level flush with the center of the winding width of a voice coil. The outer periphery of an edge (suspension) bonded to the outer circumference of the diaphragm is held by flanges of the frames.

Abstract translation: 提供了一种高性能的扬声器结构，其具有减小的厚度，但抵抗大的振幅。 排斥磁路由具有相同磁极的两个磁体形成，并且插入在两个磁体之间的中心板。 排斥磁路通过两个框架保持在适当的位置。 隔膜安装在与音圈绕组宽度中心齐平的水平处。 结合到隔膜的外周的边缘（悬架）的外周由框架的凸缘保持。

公开(公告)号：US4772513A

公开(公告)日：1988-09-20

申请号：US116539

申请日：1987-11-04

Applicant: Masakatsu Sakamoto ,  Shuhei Ohta ,  Shiro Iwakura ,  Kaoru Yamazaki ,  Yoichi Yaguchi ,  Hiroaki Toshima ,  Tsugio Sato

Inventor： Masakatsu Sakamoto ,  Shuhei Ohta ,  Shiro Iwakura ,  Kaoru Yamazaki ,  Yoichi Yaguchi ,  Hiroaki Toshima ,  Tsugio Sato

IPC: C23C14/06 ,  C23C14/32 ,  H04R31/00 ,  B32B9/00

CPC classification number: C23C14/32 ,  C23C14/0605 ,  H04R31/003 ,  Y10T428/30 ,  Y10T428/31678

Abstract: A method of forming diamond-like carbon layer which is advantageously adaptable as a coating layer on acoustic diaphragms. In the method, carbon vaporized out of solid carbon source is deposited onto the surface of the diaphragm as the coating layer in the atomosphere of catalystic gas, for instance, H.sub.2 +Ar or H.sub.2 of about 10.sup.-4 Torr. The deposited carbon layer on the surface of the diaphragm is an amorphous carbon of inclusion of hybridized orbital SP.sup.2 bond and hybridized orbital SP.sup.3 bond and crystalline carbon particles of hybridized orbital SP.sup.3 bond dispersed in the amorphous carbon, or an amorphous carbon of inclusion of hybridized orbital SP.sup.2 bond and hybridized orbital SP.sup.3 bond.

Abstract translation: 形成类似金刚石的碳层的方法，其有利地适用于声膜上的涂层。 在该方法中，从固体碳源蒸发的碳沉积在隔膜的表面上，作为催化气体的大气层中的涂层，例如约为10-4乇的H 2 + Ar或H 2。 隔膜表面上的沉积碳层是包含杂化轨道SP2键和杂化轨道SP3键的无定形碳，分散在无定形碳中的杂化轨道SP3键的结晶碳颗粒，或包含杂化轨道的无定形碳 SP2键和杂交轨道SP3键。

公开(公告)号：US5031720A

公开(公告)日：1991-07-16

申请号：US276940

申请日：1988-11-28

Applicant: Shuhei Ohta ,  Masakatu Sakamoto ,  Shiro Iwakura ,  Yoshikazu Shirasaki ,  Ichiro Yoshida

Inventor： Shuhei Ohta ,  Masakatu Sakamoto ,  Shiro Iwakura ,  Yoshikazu Shirasaki ,  Ichiro Yoshida

IPC: H04R7/02

CPC classification number: H04R7/02 ,  Y10T442/291 ,  Y10T442/326 ,  Y10T442/3472

Abstract: A speaker diaphragm is formed by heat-pressurized molding a composite structure of fabric cloth and resin sank into the fabric cloth. The fabric cloth is woven from high strength and high elasticity polyethylene fiber which has at least tensile modulus of 4,500 kg/mm.sup.2 (500 g/d).

公开(公告)号：US4725345A

公开(公告)日：1988-02-16

申请号：US853182

申请日：1986-04-17

Applicant: Masakatsu Sakamoto ,  Shuhei Ohta ,  Shiro Iwakura ,  Kaoru Yamazaki ,  Yoichi Yaguchi ,  Hiroaki Toshima ,  Tsugio Sato

Inventor： Masakatsu Sakamoto ,  Shuhei Ohta ,  Shiro Iwakura ,  Kaoru Yamazaki ,  Yoichi Yaguchi ,  Hiroaki Toshima ,  Tsugio Sato

IPC: C23C14/06 ,  C23C14/32 ,  H04R31/00 ,  C23C14/00

CPC classification number: C23C14/32 ,  C23C14/0605 ,  H04R31/003 ,  Y10T428/30 ,  Y10T428/31678

Abstract: A method of forming diamond-like carbon layer which is advantageously adaptable as a coating layer on acoustic diaphragms. In the method, carbon vaporized out of solid carbon source is deposited onto the surface of the diaphragm as the coating layer in the atmosphere of catalystic gas, for instance, H.sub.2 +Ar or H.sub.2 of about 10.sup.-4 Torr. The deposited carbon layer on the surface of the diaphragm is an amorphous carbon of inclusion of hybridized orbital SP.sup.2 bond and hybridized orbital SP.sup.3 bond and crystalline carbon particles of hybridized orbital SP.sup.3 bond dispersed in the amorphous carbon, or an amorphous carbon of inclusion of hybridized orbital SP.sup.2 bond and hybridized orbital SP.sup.3 bond.

Abstract translation: 形成类似金刚石的碳层的方法，其有利地适用于声膜上的涂层。 在该方法中，将固体碳源蒸发的碳沉积在隔膜的表面上，作为催化气体气氛中的涂层，例如约为10-4乇的H 2 + Ar或H 2。 隔膜表面上的沉积碳层是包含杂化轨道SP2键和杂化轨道SP3键的无定形碳，分散在无定形碳中的杂化轨道SP3键的结晶碳颗粒，或包含杂化轨道的无定形碳 SP2键和杂交轨道SP3键。