公开(公告)号：US5031720A

公开(公告)日：1991-07-16

申请号：US276940

申请日：1988-11-28

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

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

IPC分类号： H04R7/02

CPC分类号： H04R7/02 ,  Y10T442/291 ,  Y10T442/326 ,  Y10T442/3472

摘要： 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：US4987002A

公开(公告)日：1991-01-22

申请号：US347027

申请日：1989-05-04

申请人： Masakatu Sakamoto ,  Youichi Yaguchi ,  Hiroaki Toshima ,  Toshiroh Kotaki

发明人： Masakatu Sakamoto ,  Youichi Yaguchi ,  Hiroaki Toshima ,  Toshiroh Kotaki

IPC分类号： C23C16/01 ,  C23C16/27 ,  C23C16/458 ,  H04R7/02 ,  H04R31/00

CPC分类号： C23C16/276 ,  C23C16/01 ,  C23C16/458 ,  H04R31/003 ,  H04R7/02 ,  H04R2307/023

摘要： A crystalline diamond film is formed on a thin substrate. Energy is applied by a thermal plasma torch to a gas mixture to deposit carbon particles onto the substrate. The substrate is positioned on a pedestal with a cooling facility in which an intermediate layer of thermally conductive powder is interposed between the substrate and the pedestal.