公开(公告)号：US06431048B1

公开(公告)日：2002-08-13

申请号：US09785218

申请日：2001-02-20

申请人： Kenji Koiwa ,  Kaichiro Mitsui

发明人： Kenji Koiwa ,  Kaichiro Mitsui

IPC分类号： F15B1506

摘要： An output shaft is connected to a piston rod of a fluid pressure-driven linear cylinder through a converting mechanism for converting linear thrust of the piston rod into rotational torque and converting operation of the converting mechanism is controlled by operation setting means having a cam groove and a cam follower to thereby causing the output shaft to carry out linear motion and swinging rotation. A driving speed of the piston can be changed by adjusting fluid pressure acting on the piston in a linear motion area and a swinging area of the output shaft respectively.

公开(公告)号：US06435072B1

公开(公告)日：2002-08-20

申请号：US09793575

申请日：2001-02-27

申请人： Akihiro Hirano ,  Kenji Koiwa ,  Kiyoshi Takeuchi

发明人： Akihiro Hirano ,  Kenji Koiwa ,  Kiyoshi Takeuchi

IPC分类号： F15B1522

摘要： The invention provides a rotary actuator having a rack driven in an oscillating manner by an air pressure, a pinion engaged with the rack, and a cushion mechanism for stopping the rack to at least one normal or inverse stroke end in a cushioning manner. The cushion mechanism has an exhaust port open to a pressure chamber at a position close to a chamber end rather than a port hole, a flow amount adjusting mechanism for restricting a flow amount of the exhaust air discharged from the exhaust port, and a cushion packing mounted to an outer peripheral surface of the piston and operating so as to shut the port hole from the pressure chamber immediately before the piston reaches the stroke end, thereby discharging the air within the pressure chamber through the flow amount adjusting mechanism.

公开(公告)号：US06497172B2

公开(公告)日：2002-12-24

申请号：US09796593

申请日：2001-03-02

申请人： Akihiro Hirano ,  Kenji Koiwa ,  Kiyoshi Takeuchi

发明人： Akihiro Hirano ,  Kenji Koiwa ,  Kiyoshi Takeuchi

IPC分类号： F15B1522

CPC分类号： F15B15/065 ,  F01C9/002 ,  F15B15/12 ,  F15B15/224

摘要： A rotary actuator has a cushion mechanism for stopping a vane at a rotational terminal end position in a cushioning manner. The cushion mechanism has first and second openings. The first opening discharges an exhaust air pressed out from a cylinder hole by a rotating vane to an external portion without limiting a flow amount. The second opening discharges the exhaust air to the external portion in a state of limiting a flow amount. A flow amount adjusting mechanism connects to the second opening. The first opening is provided at a position sealed by the vane before the vane of a hole surface in the cylinder hole reaches a rotational terminal end position. The second opening is provided at a position which is not sealed by the vane after the vane reaches the rotational terminal end position.

摘要翻译： 旋转致动器具有用于以缓冲方式在旋转终端位置处停止叶片的缓冲机构。 缓冲机构具有第一和第二开口。 第一开口将从旋转叶片从缸孔向外压出的废气排出到外部，而不限制流量。 第二开口在限制流量的状态下将排气排放到外部。 流量调节机构连接到第二开口。 第一开口设置在由气缸孔中的孔面的叶片到达旋转终端位置之前由叶片密封的位置。 第二开口设置在叶片到达旋转终端位置之后未被叶片密封的位置。

公开(公告)号：US3935925A

公开(公告)日：1976-02-03

申请号：US412154

申请日：1973-11-02

申请人： Kenji Koiwa ,  Makoto Kohashi

发明人： Kenji Koiwa ,  Makoto Kohashi

IPC分类号： G10K11/28 ,  H04R1/30 ,  G10K11/00

CPC分类号： G10K11/28 ,  H04R1/30

摘要： A horn speaker having wide directional characteristics in accordance with the present invention provides a horn having a horn wall the shape of which is formed by connecting a plurality of curves having different flaring constants. The flaring constant of the curve forming a mouth portion of the horn wall is selected so as to be greater than that of the curve forming a throat portion thereof. The mouth portion of the horn wall is shaped so as to have a flaring angle which is formed by the curve at the mouth portion and has no abrupt variation of angle to a baffle plate. The curve at the mouth portion is connected with the curve at the horn wall nearer to the throat portion and having the flaring constant different therefrom at a point at which the differential coefficients of the respective curves substantially coincide with each other.

摘要翻译： 根据本发明的具有宽方向特性的喇叭扬声器提供了具有喇叭壁的喇叭，喇叭的形状通过连接具有不同扩口常数的多个曲线而形成。 选择形成喇叭口的口部的曲线的扩口常数大于形成其喉部的曲线的扩张常数。 喇叭口的口部成形为具有由口部的曲线形成的扩张角，并且与挡板的角度没有突然变化。 嘴部处的曲线与喇叭壁处的曲线连接，在更靠近喉部的喇叭壁处，并且在相应曲线的微分系数基本上彼此重合的点处具有与其不同的扩口常数。