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11. 发明申请

US20060120280A1 Switching between layer 2 switches as destination of IP packets from cards 有权
标题翻译：在第2层交换机之间切换为来自卡的IP分组的目的地
公开(公告)号：US20060120280A1
公开(公告)日：2006-06-08
申请号：US11291826
申请日：2005-12-02
申请人： Masao Murai
发明人： Masao Murai
IPC分类号： H04J3/14 , H04L12/56
CPC分类号： H04L43/0817 , H04L43/16
摘要： A layer 2 switch switching circuit has two layer 2 switches of a redundant configuration and a plurality of cards for sending IP packets to each other through either one of the two layer 2 switches. Each of the two layer 2 switches has a state signal delivery unit for delivering a state signal representing whether the layer 2 switch is in an active state or a standby state. Each of the cards has a card controller for monitoring states of the two layer 2 switches based on state signals sent respectively from the two layer 2 switches, and switching between the two layer 2 switches as a destination of IP packets based on the monitored states.
摘要翻译：第二层交换机切换电路具有冗余配置的两层二层交换机和用于通过两层二层交换机之一彼此发送IP分组的多个卡。两层2交换机中的每一个具有状态信号传递单元，用于传送表示层2交换机是处于活动状态还是待机状态的状态信号。每个卡都具有一个卡控制器，用于基于分别从两个层2交换机发送的状态信号监视两层交换机的状态，并且基于所监视的状态在两个二层交换机之间切换为IP分组的目的地。

12. 发明申请

US20050194947A1 Power supply device for electric discharge machining 失效
标题翻译：放电加工用电源装置
公开(公告)号：US20050194947A1
公开(公告)日：2005-09-08
申请号：US11068845
申请日：2005-03-02
申请人： Masao Murai , Akiyoshi Kawahara
发明人： Masao Murai , Akiyoshi Kawahara
IPC分类号： B23H1/02 , B23H7/04 , G05F1/40
CPC分类号： B23H1/022 , B23H7/04 , B23H2300/20
摘要： An electric-discharge-machining power supply device in which energy loss is hardly produced and a charge voltage of a capacitor is easily controlled. When a switching element SW1 is turned on, a capacitor C is charged via an inductor L. When the voltage Vc of the charged capacitor exceeds the voltage of direct-current power source E, a current is returned to the power source E via a diode D2. When the switching element SW1 is turned off, energy stored in the inductor L flows from the inductor L through the diode D2, the power source E and the diode D1, so that the voltage Vc of the capacitor C is kept at the power source voltage. When a switching element SW2 is turned on, the voltage of the capacitor is applied between an electrode and a workpiece. Since the charging circuit does not include a resistor and energy stored in the inductor L is returned to the direct-current power source E, no energy loss is produced. Further, the voltage Vc of the charged capacitor C can be controlled by adjusting the power source voltage.
摘要翻译：能够容易地控制能量损失几乎不产生并且电容器的充电电压的放电加工电源装置。当开关元件SW1导通时，经由电感器L对电容器C充电。当充电电容器的电压Vc超过直流电源E的电压时，电流经由二极管D 2。当开关元件SW 1截止时，存储在电感器L中的能量从电感器L流过二极管D 2，电源E和二极管D1，使得电容器C的电压Vc保持在电源电压。当开关元件SW 2导通时，电容器的电压被施加在电极和工件之间。由于充电电路不包括电阻器，所以存储在电感器L中的能量返回到直流电源E，不会产生能量损失。此外，可以通过调节电源电压来控制充电电容器C的电压Vc。

13. 发明授权

US08901448B2 Electric discharge machine 有权
标题翻译：放电机
公开(公告)号：US08901448B2
公开(公告)日：2014-12-02
申请号：US13282872
申请日：2011-10-27
申请人： Masao Murai , Yasuo Arakawa , Tomoyuki Furuta
发明人： Masao Murai , Yasuo Arakawa , Tomoyuki Furuta
IPC分类号： B23H1/02 , B23H7/04
CPC分类号： B23H1/022 , B23H1/024 , B23H7/04
摘要： An electric discharge machine includes a machining power supply for applying a voltage to a machining gap between a machining electrode and its opposite workpiece and detecting a contact between the machining electrode and the workpiece. The machining power supply includes a first power supply circuit whose output voltage is equal to or less than an arc voltage, a second power supply circuit for supplying a pulse current to the machining gap, and a control unit. When the first power supply circuit detects a contact between the machining electrode and the workpiece, the control unit operates to supply a pulse current from the second power supply circuit to the machining gap while the machining electrode and the workpiece are in contact with each other.
摘要翻译：放电加工机包括：加工电源，用于向加工电极与其相对的工件之间的加工间隙施加电压，并检测加工电极与工件之间的接触。加工电源包括输出电压等于或小于电弧电压的第一电源电路，用于向加工间隙提供脉冲电流的第二电源电路和控制单元。当第一电源电路检测到加工电极和工件之间的接触时，控制单元操作以在加工电极和工件彼此接触的同时将来自第二电源电路的脉冲电流提供给加工间隙。

14. 发明授权

US6130510A Electric discharge machining power source unit for electric discharge machine 有权
标题翻译：放电加工电源单元
公开(公告)号：US6130510A
公开(公告)日：2000-10-10
申请号：US284280
申请日：1999-04-12
申请人： Masaki Kurihara , Masao Murai , Akihiro Sakurai , Akiyoshi Kawahara
发明人： Masaki Kurihara , Masao Murai , Akihiro Sakurai , Akiyoshi Kawahara
IPC分类号： B23H1/02 , H05B37/02
CPC分类号： B23H1/022
摘要： When a state for electric discharge is established, switching elements T2 and T3 are turned on so that a machining current J0 from a low-voltage auxiliary DC power source (2) flows between a workpiece (W) and a machining electrode (P). Thereupon, an electric discharge machining current J0 sharply rises as a high voltage is applied from a main DC power source (1). When the switching element T1 is turned off, the electric discharge machining current (J0) reaches its peak value, which is maintained by the current from the auxiliary DC power source (2). When the switching elements T2 and T3 are turned off, a current produced by induced energy is fed back to the main DC power source (1) through diodes D1 and D2, whereupon the machining current sharply falls.
摘要翻译： PCT No.PCT / JP98 / 03574 Sec。 371日期1999年4月12日 102（e）1999年4月12日PCT PCT 1998年8月11日PCT公布。 WO99 / 07510PC公报。日期1999年2月18日当建立放电状态时，开关元件T2和T3导通，使得来自低压辅助DC电源（2）的加工电流J0在工件（W）和加工电极（P）。于是，从主DC电源（1）施加高电压时，放电加工电流J0急剧上升。当开关元件T1断开时，放电加工电流（J0）达到由辅助直流电源（2）的电流保持的峰值。当开关元件T2和T3关断时，由感应能产生的电流通过二极管D1和D2反馈到主DC电源（1），于是加工电流急剧下降。

15. 发明授权

US5600647A Communication data switching apparatus and communication system with such switching apparatus 失效
标题翻译：具有这种开关装置的通信数据交换装置和通信系统
公开(公告)号：US5600647A
公开(公告)日：1997-02-04
申请号：US405956
申请日：1995-03-17
申请人： Masao Murai
发明人： Masao Murai
IPC分类号： G06F13/40 , G06F13/42 , H04L12/407
CPC分类号： G06F13/4022 , G06F13/4239
摘要： A communication data switching apparatus for use between an input line, an output line, and a memory bus includes a receiver connected to the input line, a transmitter connected to the output line, a buffer memory for storing data received by the receiver and data to be transmitted by the transmitter, a memory transfer controller for controlling transfer of data between the buffer memory and the memory bus, and a main control unit for controlling the receiver, the transmitter, the buffer memory, and the memory transfer controller to store a signal which has been received from the input line by the receiver, in the buffer memory, to transfer the signal to the memory bus, to confirm whether data on the memory bus are addressed to a station to which the main control unit belongs, based on the content of the data, and to deliver the data through said transmitter to the output line if the data are addressed to the station. The communication data switching apparatus can quickly distribute a received signal to a plurality of stations. A communication data switching system may include a plurality of such communication data switching apparatus.
摘要翻译：在输入线，输出线和存储器总线之间使用的通信数据切换装置包括连接到输入线的接收器，连接到输出线的发送器，用于存储由接收器接收的数据的缓冲存储器和数据由发送器发送，用于控制缓冲存储器和存储器总线之间的数据传送的存储器传送控制器，以及用于控制接收器，发送器，缓冲存储器和存储器传送控制器的主控制单元，用于存储信号在缓冲存储器中已经从接收器的输入线接收到的信号，以将信号传送到存储器总线，以基于所述存储器总线来确认存储器总线上的数据是否被寻址到主控制单元所属的站数据的内容，并且如果数据被寻址到站，则通过所述发射机将数据传送到输出线。通信数据交换装置可以将接收的信号快速分配到多个站。通信数据交换系统可以包括多个这样的通信数据交换装置。

16. 发明授权

US4672325A Clock frequency detection circuit 失效
标题翻译：时钟频率检测电路
公开(公告)号：US4672325A
公开(公告)日：1987-06-09
申请号：US638051
申请日：1984-08-06
申请人： Masao Murai
发明人： Masao Murai
IPC分类号： G11B15/467 , G05B11/00 , G05B11/01 , G06F11/00 , H03K5/19 , H03K9/06 , H03K5/00
CPC分类号： G06F11/0757 , G05B11/01
摘要： A clock detector has a D flip-flop having a D terminal, a reset terminal and a clock terminal, a first saw-tooth wave signal generator having a first time constant for supplying to the D terminal a first logic signal resulting from a first saw-tooth wave signal, and a second saw-tooth wave signal generator having a second time constant which is larger than the first time constant for supplying to the reset terminal a second logic signal resulting from a second saw-tooth wave signal. A first clock pulse is supplied to the first and second saw-tooth wave signal generators, and a second clock pulse is applied to the clock terminal of the D flip-flop. When a reciprocal of a frequency of the first and second clock pulses falls within the first and second time constants, a normal clock pulse is detected.
摘要翻译：时钟检测器具有D触发器，具有D端子，复位端子和时钟端子，具有第一时间常数的第一锯齿波信号发生器，用于向D端子提供由第一锯形成的第一逻辑信号以及第二锯齿波信号发生器，其具有大于第一时间常数的第二时间常数，用于向复位端子提供由第二锯齿波信号产生的第二逻辑信号。第一时钟脉冲被提供给第一和第二锯齿波信号发生器，并且第二时钟脉冲被施加到D触发器的时钟端子。当第一和第二时钟脉冲的频率的倒数落在第一和第二时间常数内时，检测到正常的时钟脉冲。

17. 发明授权

US08975554B2 Wire electric discharge machine capable of detecting machining state 有权
标题翻译：线性放电机能够检测加工状态
公开(公告)号：US08975554B2
公开(公告)日：2015-03-10
申请号：US13151769
申请日：2011-06-02
申请人： Akiyoshi Kawahara , Masao Murai , Tomoyuki Furuta
发明人： Akiyoshi Kawahara , Masao Murai , Tomoyuki Furuta
IPC分类号： B23H1/02 , B23H7/04
CPC分类号： B23H1/022 , B23H1/024 , B23H7/04
摘要： A voltage is applied to a machining gap between a wire electrode and a workpiece for a period of one microsecond or less with a quiescent time longer than the duration of voltage application between each two adjacent cycles of voltage application provided, and the number of duty cycles and a machining-gap voltage are detected. An open-circuit state in which electric discharge does not occur after the voltage is applied is identified by the detected machining-gap voltage, and the number of open-circuits is counted. An average machining-gap voltage is obtained based on the numbers of duty cycles and open-circuits and the supply voltage or an average voltage for each duty cycle.
摘要翻译：电压施加到线电极和工件之间的加工间隙1微秒或更小，其静态时间长于提供的每两个相邻电压施加周期之间的施加电压的持续时间，并且占空比数并检测加工间隙电压。通过检测到的加工间隙电压来识别在施加电压之后不发生放电的开路状态，并计数开路次数。基于占空比和开路次数以及每个占空比的电源电压或平均电压获得平均加工间隙电压。

18. 发明授权

US5355499A Interruption circuit operable at a high speed 失效
标题翻译：中断电路可高速运行
公开(公告)号：US5355499A
公开(公告)日：1994-10-11
申请号：US868519
申请日：1992-04-15
申请人： Masao Murai
发明人： Masao Murai
IPC分类号： G06F9/48 , G06F13/24 , G06F13/14
CPC分类号： G06F13/24
摘要： In an interruption circuit, each of a multiplicity of interruption generating units (12) is for generating an interruption signal upon occurrence of an interruption request. A scanning arrangement scans the units to specify one of them at a time as a particular unit and to supply the signal generated by the particular unit to a CPU (11) as a particular signal. A response supply arrangement supplies the particular unit with a response produced by the CPU upon receipt of the particular signal. Supplied with the response, the particular unit supplies the CPU with an interruption vector which is specific to each unit and makes the CPU interrupt its operation related to the particular unit. Preferably the scanning arrangement comprises a scanning circuit (16) and a first plurality of polling circuits (17), each for a second plurality of generating units with a response control circuit (27) made to correspond thereto.
摘要翻译：在中断电路中，多个中断发生单元（12）中的每一个用于在发生中断请求时产生中断信号。扫描装置扫描单元以指定其中一个作为特定单元，并将特定单元生成的信号作为特定信号提供给CPU（11）。响应供应装置向特定单元提供在接收到特定信号时由CPU产生的响应。随着响应的提供，特定单元向CPU提供一个特定于每个单元的中断向量，并使CPU中断与特定单元相关的操作。优选地，扫描装置包括扫描电路（16）和第一多个轮询电路（17），每个轮询电路（17）分别用于具有与其对应的响应控制电路（27）的第二多个发生单元。

19. 发明授权

US4787469A Power steering system 失效
标题翻译：动力转向系统
公开(公告)号：US4787469A
公开(公告)日：1988-11-29
申请号：US888436
申请日：1986-07-23
申请人： Hiroshi Yoshida , Hajime Kozuka , Masao Murai
发明人： Hiroshi Yoshida , Hajime Kozuka , Masao Murai
IPC分类号： B62D6/02 , B62D5/08
CPC分类号： B62D6/02
摘要： A power steering system including an input shaft coupled to a steering wheel, a torsion bar for transmitting rotation of the input shaft to an output shaft, a power cylinder coupled to the output shaft, an oil path switching valve for switching oil paths to the power cylinder in accordance with the difference of turning angle between the input shaft and the output shaft, a high pressure oil path for supplying working oil delivered from an oil pump to the power cylinder via the oil path switching valve, a low pressure oil path for returning the working oil from the power cylinder to an oil tank via the oil path switching valve, a reaction piston for exerting a restraining force between the input shaft and the output shaft to limit the difference of turning angle therebetween, a control oil path extending from the midway of the high pressure oil path to the reaction piston, a pressure control valve for controlling oil pressure in the control oil path extending to the reaction piston to a level not higher than a predetermined highest pressure, a return side orifice for communicating the control oil path between the pressure control valve and the reaction piston with the low pressure oil path, and a solenoid for actuating the pressure control valve by means of its plunger for generating an axial force which varies in accordance with a car speed and takes substantially a certain strength at every given car speed.
摘要翻译：一种动力转向系统，包括联接到方向盘的输入轴，用于将输入轴的旋转传递到输出轴的扭杆，联接到输出轴的动力缸，用于将油路切换到动力的油路切换阀根据输入轴和输出轴之间的转动角度差异的气缸，用于将通过油路切换阀从油泵输送到动力油缸的工作油供给的高压油路，用于返回的低压油路通过油路切换阀从动力缸到油箱的工作油，用于在输入轴和输出轴之间施加约束力的反作用活塞，以限制它们之间的转向角差;控制油路，从通向反作用活塞的高压油路的中途的压力控制阀，用于控制延伸到反应活塞的控制油路中的油压到水平不高于预定的最高压力;返回侧孔口，用于使压力控制阀和反作用活塞之间的控制油路与低压油路连通;以及螺线管，用于通过其柱塞致动压力控制阀产生根据车速而变化的轴向力，并且在每个给定的车速下基本上具有一定的强度。

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