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公开(公告)号：US4763872A
公开(公告)日：1988-08-16
申请号：US71258
申请日：1987-07-08
申请人： Koji Ichihashi , Toshihiro Murayama
发明人： Koji Ichihashi , Toshihiro Murayama
CPC分类号： F16K31/0655 , F16K31/0651
摘要： An operating oil introduction type electromagnetic valve comprising a cap defining an electromagnetic valve external portion, an exciting coil, an inner housing and a stopper spacedly disposed inside the coil, a tubular slide guide with a bottom surface which is made of a non-magnetic material and disposed inside the inner housing and stopper, a plunger chamber formed within the guide and communicating at one end with an oil source and with the other end closed, and a plunger slidably contained within the plunger chamber and actuated by electromagnetic force of the coil.
摘要翻译： 一种工作油引入型电磁阀，包括限定电磁阀外部的盖，励磁线圈，间隔地布置在线圈内的止动件，内壳体和止动件，具有底表面的管状滑动引导件，其由非磁性材料制成 并且设置在所述内壳体和止挡件内部;柱塞室，形成在所述引导件内并且在一端与油源连通并且另一端封闭;柱塞，其可滑动地容纳在所述柱塞室内并且被所述线圈的电磁力驱动。
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公开(公告)号：US4694270A
公开(公告)日：1987-09-15
申请号：US846878
申请日：1986-04-01
申请人： Koji Ichihashi
发明人： Koji Ichihashi
CPC分类号： H01F7/1607
摘要： An electromagnetic proportional actuator comprises a plunger axially movably received in a cylindrical housing. An actuating member has one end thereof abutting against or connected to one axial end of the plunger. The plunger is displaced in response to electric current passing through a solenoid wound around an outer peripheral surface of the housing. A tubular member formed of a non-magnetic material is disposed between an outer peripheral surface of the plunger and an inner peripheral surface of the housing in such a manner that the plunger is axially slidable within the tubular member, to prevent the plunger from being attracted to the inner peripheral surface of the housing.
摘要翻译： 电磁比例致动器包括轴向可移动地容纳在圆柱形壳体中的柱塞。 致动构件的一端抵靠或连接到柱塞的一个轴向端。 柱塞响应于通过围绕壳体的外周表面缠绕的螺线管的电流而移位。 由非磁性材料形成的管状构件设置在柱塞的外周表面和壳体的内周表面之间，使得柱塞在管状构件内可轴向滑动，以防止柱塞被吸引 到壳体的内周面。
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公开(公告)号：US5115721A
公开(公告)日：1992-05-26
申请号：US613137
申请日：1990-11-15
申请人： Koji Ichihashi , Kyoji Tanaka
发明人： Koji Ichihashi , Kyoji Tanaka
CPC分类号： F16H61/065 , F16D48/0206 , F16D2048/0221 , F16D2048/0224 , F16D2048/0266 , F16D2048/0269 , F16D2500/7041 , Y10T137/87217 , Y10T137/87241
摘要： A change-over valve including a valve housing defining an inlet port for receiving fluid from a fluid pressure supply, a first outlet port for feeding operating fluid to a first fluid responsive actuator, a second outlet port for feeding operating fluid to a second fluid responsive actuator, and drain port means for draining fluid to a fluid reservoir; and a spool retained by the housing and movable therein between first and second positions, the housing and the spool in its first position providing communication between the inlet port and the first outlet port and preventing communication between the inlet port and the second outlet port, and the housing and the spool in its second position providing communication between the inlet port and the second outlet port, and preventing communication between the inlet port and the first outlet port. Also included is a control valve movable between open and closed positions in response to the fluid pressure at the first outlet port, the control valve providing communication between the second outlet port and the drain port means when in its open position and preventing communication therebetween when in its closed position.
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公开(公告)号：US5115722A
公开(公告)日：1992-05-26
申请号：US695431
申请日：1991-05-03
申请人： Koji Ichihashi , Kyoji Tanaka
发明人： Koji Ichihashi , Kyoji Tanaka
CPC分类号： F16H61/065 , F16H2061/026 , Y10T137/87217
摘要： There is disclosed a solenoid-operated selector valve adapted for control of hydraulic clutches such as of a tractor. The selector valve has four ports and can assume two positions. The selector valve includes a spool having an axially extending hole. A piston and a sequence valve are held in this hole. The sequence valve can relieve the pressure. The hole is in communication with the outside of the spool via first through third radially extending holes. The pressure inside one cylinder port which is normally connected with the pump port is maintained constant even when the engaged clutch is being switched to the other. This pressure is not reduced down to zero until the pressure inside the other cylinder port reaches a predetermined pressure.
摘要翻译： 公开了一种用于控制诸如拖拉机的液压离合器的电磁选择阀。 选择阀有四个端口，可以采取两个位置。 选择阀包括具有轴向延伸孔的线轴。 活塞和顺序阀保持在该孔中。 顺序阀可以减轻压力。 孔经由第一至第三径向延伸的孔与卷轴的外部连通。 通常与泵口连接的一个气缸端口内的压力即使被接合的离合器被切换到另一个也保持恒定。 直到另一个气缸端口内的压力达到预定的压力为止，该压力不会降低到零。
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公开(公告)号：US5062454A
公开(公告)日：1991-11-05
申请号：US528063
申请日：1990-05-23
申请人： Koji Ichihashi , Jun-ichi Yasuma
发明人： Koji Ichihashi , Jun-ichi Yasuma
IPC分类号： G05D16/20
CPC分类号： G05D16/2093 , Y10T137/7976 , Y10T137/8049 , Y10T137/8122 , Y10T137/8659 , Y10T137/86614
摘要： A spool control valve in which communicating passages are provided in the spool to communicate between a pair of locations in the spool passage and filter means are provided in a communicating passage to prevent valve orifices being blocked by particles of foreign matter in the fluid.
摘要翻译： 一个阀芯控制阀，其中连接通道设置在阀芯中以在阀芯通道中的一对位置和过滤器装置之间连通，设置在连通通道中，以防止阀孔被流体中的异物颗粒阻塞。
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公开(公告)号：US4746888A
公开(公告)日：1988-05-24
申请号：US71259
申请日：1987-07-08
申请人： Koji Ichihashi , Kyoji Tanaka , Wataru Takahashi
发明人： Koji Ichihashi , Kyoji Tanaka , Wataru Takahashi
CPC分类号： H01F7/1607 , H01F2007/085 , Y10T137/86622
摘要： A solenoid for an electromagnetic valve which has an exciting coil, a tubular hollow inner housing with a shaft sleeve portion thereof disposed within the coil, a tubular slide guide having a bottom made of a non-magnetic material which is contained within the housing, a stopper with a stationary shaft portion fitted in an opening end of the slide guide, and a plunger slidably contained within the slide guide which is defined by the end face of the shaft portion and the bottom marginal portion of the slide guide.
摘要翻译： 一种用于具有励磁线圈的电磁阀的螺线管，具有设置在线圈内的轴套部分的管状中空内壳体，具有容纳在壳体内的由非磁性材料制成的底部的管状滑动引导件， 止动器，固定轴部分装配在滑动引导件的开口端，以及可滑动地容纳在滑动引导件内的柱塞，其由轴部分的端面和滑动引导件的底部边缘部分限定。
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