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1. 发明申请

US20090041593A1 VARIABLE DISPLACEMENT TYPE GEAR PUMP 审中-公开
标题翻译：可变位移型齿轮泵
公开(公告)号：US20090041593A1
公开(公告)日：2009-02-12
申请号：US12186625
申请日：2008-08-06
申请人： Hironao Yokoi , Shigeru Suzuki , Katsumi Yamashita , Toshiro Fujii , Masaki Ota , Kazuo Murakami
发明人： Hironao Yokoi , Shigeru Suzuki , Katsumi Yamashita , Toshiro Fujii , Masaki Ota , Kazuo Murakami
IPC分类号： F04C14/26 , F04C2/14
CPC分类号： F04C11/001 , F04C2/086 , F04C2/18 , F04C14/065 , F04C14/26 , F04C2240/30
摘要： A variable displacement type gear pump has gear chambers, one of which is a specific gear chamber. A suction passage is formed in the housing so as to communicate with suction-side spaces. An outlet passage communicates with discharge-side spaces. A return passage returns the fluid discharged to the discharge-side space of the specific gear chamber to the suction passage. The return passage communicates with the suction passage at a confluence portion located upstream side of the suction-side space. An opening and closing valve opens the return passage in a small displacement operational state. A check valve is located between the discharge-side space of the specific gear chamber and the outlet passage for preventing the fluid discharged from the gear chamber other than the specific gear chamber from flowing into the discharge-side space of the specific gear chamber in the small displacement operational state.
摘要翻译：可变排量式齿轮泵具有齿轮室，其中一个是特定齿轮室。吸入通道形成在壳体中以与吸入侧空间连通。出口通道与排放侧空间连通。返回通道将排出到特定齿轮室的排放侧空间的流体返回到吸入通道。返回通道在位于吸入侧空间上游侧的汇合部分处与吸入通道连通。打开和关闭阀在小排量操作状态下打开返回通道。止回阀位于特定齿轮室的排出侧空间和出口通道之间，用于防止从特定齿轮室以外的齿轮室排出的流体流入特定齿轮室的排出侧空间小排量运行状态。

2. 发明申请

US20100054963A1 VARIABLE DISPLACEMENT ROTARY PUMP 有权
标题翻译：可变位移旋转泵
公开(公告)号：US20100054963A1
公开(公告)日：2010-03-04
申请号：US12546438
申请日：2009-08-24
申请人： Hironao Yokoi , Shigeru Suzuki , Katsumi Yamashita , Toshiro Fujii
发明人： Hironao Yokoi , Shigeru Suzuki , Katsumi Yamashita , Toshiro Fujii
IPC分类号： F04B49/24
CPC分类号： F04C11/001 , F04C14/02 , F04C14/065 , F04C14/26 , F04C2270/58
摘要： A variable displacement rotary pump includes a main pump unit, an auxiliary pump unit, a discharge passage, a bypass passage, a suction passage, a check valve and a control valve. The suction passage is in communication with the discharge passage through the bypass passage and a second discharge port. The check valve is disposed in the discharge passage for preventing fluid in a first discharge port of the main pump unit from flowing into the bypass passage. The control valve is operable for opening and closing the bypass passage. When the control valve opens the bypass passage and the check valve closes the discharge passage, flow rate of the fluid discharged from the discharge passage is reduced. A throttle passage is provided in the bypass passage or the control valve for regulating flow of the fluid in early phase of operation of the control valve to open the bypass passage.
摘要翻译：可变排量旋转泵包括主泵单元，辅助泵单元，排出通道，旁通通道，吸入通道，止回阀和控制阀。吸入通路与通过旁路通路的排出通路和第二排出口连通。止回阀设置在排出通道中，用于防止主泵单元的第一排出口中的流体流入旁通通道。控制阀可操作以打开和关闭旁路通道。当控制阀打开旁通通道并且止回阀关闭排出通道时，从排出通道排出的流体的流量减小。在旁通通道或控制阀中设置有节流通道，用于调节控制阀的早期操作中的流体的流动以打开旁路通道。

3. 发明申请

US20090208358A1 VARIABLE DISPLACEMENT GEAR PUMP 有权
标题翻译：变速齿轮泵
公开(公告)号：US20090208358A1
公开(公告)日：2009-08-20
申请号：US12370083
申请日：2009-02-12
申请人： Katsumi Yamashita , Shigeru Suzuki , Hironao Yokoi , Toshiro Fujii
发明人： Katsumi Yamashita , Shigeru Suzuki , Hironao Yokoi , Toshiro Fujii
IPC分类号： F01C1/14
CPC分类号： F04C2/18 , F04C14/065
摘要： The variable displacement gear pump for a loading system in an industrial vehicle has main and sub gear pump portions, suction, discharge and bypass passages, and check and opening valves. The main gear pump portion has main drive and driven gears, and has suction and discharge side spaces. The sub gear pump portion has sub drive and driven gears, and has suction and discharge side spaces. The bypass passage returns hydraulic fluid in the discharge-side space of the sub gear pump portion to the suction passage. The check valve prevents hydraulic fluid in the discharge-side space of the main gear pump portion from flowing to that of the sub gear pump portion. The opening valve is used for opening and closing the bypass passage, and closes the bypass passage due to a pressure in a discharge conduit of the loading system increased by the load applied to the loading system.
摘要翻译：用于工业车辆中的装载系统的可变排量齿轮泵具有主副齿轮泵部分，抽吸，排放和旁通通道以及检查和打开阀。主齿轮泵部分具有主驱动齿轮和从动齿轮，并且具有抽吸和排出侧空间。副齿轮泵部分具有副驱动齿轮和从动齿轮，并且具有吸入和排出侧空间。旁路通路将副齿轮泵部的排出侧空间的液压流体返回到吸入通路。止回阀防止主齿轮泵部分的排出侧空间中的液压流体流向副齿轮泵部分的液压流体。打开阀用于打开和关闭旁路通道，并且由于加载系统的排放管道中的压力增加到施加到装载系统的负载而使旁通通道关闭。

4. 发明授权

US08348635B2 Variable displacement gear pump 有权
标题翻译：可变排量齿轮泵
公开(公告)号：US08348635B2
公开(公告)日：2013-01-08
申请号：US12370083
申请日：2009-02-12
申请人： Katsumi Yamashita , Shigeru Suzuki , Hironao Yokoi , Toshiro Fujii
发明人： Katsumi Yamashita , Shigeru Suzuki , Hironao Yokoi , Toshiro Fujii
IPC分类号： F01C1/14
CPC分类号： F04C2/18 , F04C14/065
摘要： The variable displacement gear pump for a loading system in an industrial vehicle has main and sub gear pump portions, suction, discharge and bypass passages, and check and opening valves. The main gear pump portion has main drive and driven gears, and has suction and discharge side spaces. The sub gear pump portion has sub drive and driven gears, and has suction and discharge side spaces. The bypass passage returns hydraulic fluid in the discharge-side space of the sub gear pump portion to the suction passage. The check valve prevents hydraulic fluid in the discharge-side space of the main gear pump portion from flowing to that of the sub gear pump portion. The opening valve is used for opening and closing the bypass passage, and closes the bypass passage due to a pressure in a discharge conduit of the loading system increased by the load applied to the loading system.
摘要翻译：用于工业车辆中的装载系统的可变排量齿轮泵具有主副齿轮泵部分，抽吸，排放和旁通通道以及检查和打开阀。主齿轮泵部分具有主驱动齿轮和从动齿轮，并且具有抽吸和排出侧空间。副齿轮泵部分具有副驱动齿轮和从动齿轮，并且具有吸入和排出侧空间。旁路通路将副齿轮泵部的排出侧空间的液压流体返回到吸入通路。止回阀防止主齿轮泵部分的排出侧空间中的液压流体流向副齿轮泵部分的液压流体。打开阀用于打开和关闭旁路通道，并且由于加载系统的排放管道中的压力增加到施加到装载系统的负载而使旁通通道关闭。

5. 发明申请

US20090041594A1 VARIABLE DISPLACEMENT TYPE GEAR PUMP 审中-公开
标题翻译：可变位移型齿轮泵
公开(公告)号：US20090041594A1
公开(公告)日：2009-02-12
申请号：US12186792
申请日：2008-08-06
申请人： Hironao Yokoi , Shigeru Suzuki , Katsumi Yamashita , Toshiro Fujii , Masaki Ota , Kazuo Murakami
发明人： Hironao Yokoi , Shigeru Suzuki , Katsumi Yamashita , Toshiro Fujii , Masaki Ota , Kazuo Murakami
IPC分类号： F04B49/24 , F04C2/14
CPC分类号： F04C2/14 , F04C11/001 , F04C14/065
摘要： In a variable displacement type gear pump, each of a main gear pump portion and a sub gear pump portion has a drive gear, a driven gear engaging with the drive gear, and an urging portion applying radial load to the drive and driven gears. A bypass passage returns fluid in a discharge-side space of the sub gear pump portion to a suction passage. An opening and closing valve opens the bypass passage in a small displacement operational state. A drive shaft supports the main drive gear and the sub drive gear. A driven shaft supports the main driven gear and the sub driven gear. The drive gears and the driven gears are rotated in accordance with a rotation of the drive shaft. The drive and driven shafts transmit the radial load in the main gear pump portion to the sub gear pump portion in the small displacement operational state.
摘要翻译：在可变排量型齿轮泵中，主齿轮泵部分和副齿轮泵部分中的每一个具有驱动齿轮，与驱动齿轮啮合的从动齿轮和向驱动齿轮和从动齿轮施加径向载荷的推动部分。旁通通路将副齿轮泵部的排出侧空间的流体返回到吸入通路。打开和关闭阀在小排量操作状态下打开旁通通道。驱动轴支撑主驱动齿轮和副驱动齿轮。从动轴支撑主从动齿轮和副从动齿轮。驱动齿轮和从动齿轮根据驱动轴的旋转而旋转。驱动轴和从动轴在小排量操作状态下将主齿轮泵部分中的径向载荷传递到副齿轮泵部分。

6. 发明授权

US08287255B2 Variable displacement rotary pump 有权
标题翻译：可变排量旋转泵
公开(公告)号：US08287255B2
公开(公告)日：2012-10-16
申请号：US12546438
申请日：2009-08-24
申请人： Hironao Yokoi , Shigeru Suzuki , Katsumi Yamashita , Toshiro Fujii
发明人： Hironao Yokoi , Shigeru Suzuki , Katsumi Yamashita , Toshiro Fujii
IPC分类号： F04B49/24
CPC分类号： F04C11/001 , F04C14/02 , F04C14/065 , F04C14/26 , F04C2270/58
摘要： A variable displacement rotary pump includes a main pump unit, an auxiliary pump unit, a discharge passage, a bypass passage, a suction passage, a check valve and a control valve. The suction passage is in communication with the discharge passage through the bypass passage and a second discharge port. The check valve is disposed in the discharge passage for preventing fluid in a first discharge port of the main pump unit from flowing into the bypass passage. The control valve is operable for opening and closing the bypass passage. When the control valve opens the bypass passage and the check valve closes the discharge passage, flow rate of the fluid discharged from the discharge passage is reduced. A throttle passage is provided in the bypass passage or the control valve for regulating flow of the fluid in early phase of operation of the control valve to open the bypass passage.
摘要翻译：可变排量旋转泵包括主泵单元，辅助泵单元，排出通道，旁通通道，吸入通道，止回阀和控制阀。吸入通路与通过旁路通路的排出通路和第二排出口连通。止回阀设置在排出通道中，用于防止主泵单元的第一排出口中的流体流入旁通通道。控制阀可操作以打开和关闭旁路通道。当控制阀打开旁通通道并且止回阀关闭排出通道时，从排出通道排出的流体的流量减小。在旁通通道或控制阀中设置有节流通道，用于调节控制阀的早期操作中的流体的流动以打开旁路通道。

7. 发明授权

US06580541B1 System and method for transmitting information for amphibious traveling vehicle and system for controlling operation of the vehicle 失效
标题翻译：用于传输水陆两用行驶车辆信息的系统和方法以及用于控制车辆操作的系统
公开(公告)号：US06580541B1
公开(公告)日：2003-06-17
申请号：US09155005
申请日：1998-12-18
申请人： Katsumi Yamashita , Kenjiro Futami
发明人： Katsumi Yamashita , Kenjiro Futami
IPC分类号： H04B1000
CPC分类号： B63H21/21 , B60F3/0007 , B63H19/08 , B63H21/22 , B63H2025/028
摘要： In order to allow an amphibious traveling vehicle to safely travel along rails on the land and in the water, or underwater even off the rails, a system for transmitting information of amphibious traveling vehicle comprising a traveling vehicle-side control system (51) which controls the operating state of the traveling vehicle and is provided on the traveling vehicle for traveling under water or underwater and in the air, a host-side control system (53) which instructs the system (51) to operate the traveling vehicle and is provided separately from the traveling vehicle, and communication means (60 and 61) which transmit information between the systems (51 and 53) and are connected to these systems (51 and 53), said system being characterized in that said communication means (60 and 61) is constituted of modulators (54 and 55) which modulate received instruction information into light beams, demodulators (56 and 57) which demodulate received beams of light into the instruction information and a light beam transmitter/receiver (58 and 59), wherein the information transmission between the systems (51 and 53) can be performed with light beams.
摘要翻译：为了允许水陆两用的行驶车辆沿着轨道在陆地上，水下或水下甚至轨道上安全地行驶，用于传输水陆两用行驶车辆的信息的系统包括行驶车辆侧控制系统（51），其控制行驶车辆的操作状态设置在行驶车辆上，在水下或水下以及空中行驶，主机侧控制系统（53）指示系统（51）操作行驶车辆并分开设置以及在系统（51和53）之间传送信息并且连接到这些系统（51和53）的通信装置（60和61），所述系统的特征在于所述通信装置（60和61）由将调制器（54和55）调制到光束中的调制器（54和55），解调器（56和57）将接收到的光束解调成指令信息离子和光束发射器/接收器（58和59），其中系统（51和53）之间的信息传输可以用光束执行。

8. 发明授权

US08180004B2 Method for estimating amount of distortion in CFO and DCO, method for compensating received signals using the same, and receiver 失效
标题翻译：用于估计CFO和DCO中的失真量的方法，用于使用其来补偿接收信号的方法和接收机
公开(公告)号：US08180004B2
公开(公告)日：2012-05-15
申请号：US12740028
申请日：2008-11-05
申请人： Hai Lin , Katsumi Yamashita
发明人： Hai Lin , Katsumi Yamashita
IPC分类号： H04L1/00
CPC分类号： H04L27/2657 , H04L27/2675
摘要： A received signal delivered through a transmission line can be compensated for carrier frequency offset and direct-current offset to improve the signal-to-noise ratio of the received signal, eventually resulting in an effective improvement in the error rate. The received signal has convoluted influences through the transmission line, so that observation of continual symbols of periodic pilot signals on the frequency axis shows just a phase shift by the carrier frequency offset. Therefore, the carrier frequency offset can be analytically found from the continual symbols of periodic pilot signals, thereby allowing the direct-current offset to be estimated and both the carrier frequency offset and the direct-current offset to be compensated for.
摘要翻译：通过传输线传送的接收信号可以补偿载波频率偏移和直流偏移，以改善接收信号的信噪比，最终导致误码率的有效改善。接收到的信号通过传输线路产生卷积影响，从而观察频率轴上周期性导频信号的连续符号只显示载波频率偏移的相移。因此，可以从周期性导频信号的连续符号中分析地发现载波频率偏移，从而允许估计直流偏移，并补偿载波频率偏移和直流偏移。

9. 发明申请

US20100246723A1 METHOD FOR ESTIMATING AMOUNT OF DISTORTION IN CFO AND DCO, METHOD FOR COMPENSATING RECEIVED SIGNALS USING THE SAME, AND RECEIVER 失效
标题翻译：用于估计CFO和DCO中的失真量的方法，用于对使用其的接收信号进行补偿的方法和接收器
公开(公告)号：US20100246723A1
公开(公告)日：2010-09-30
申请号：US12740028
申请日：2008-11-05
申请人： Hai Lin , Katsumi Yamashita
发明人： Hai Lin , Katsumi Yamashita
IPC分类号： H04B1/10 , H04L25/06
CPC分类号： H04L27/2657 , H04L27/2675
摘要： A received signal delivered through a transmission line can be compensated for CFO and DCO to improve the SNR of the received signal, eventually resulting in an effective improvement in the error rate. In this context, methods for estimating and compensating for CFO and DCO have been studied, for example, using pilot signals or a blind method. However, the methods would require a huge amount of calculations for the estimation of CFO in the presence of DCO, as with the ML method, or never essentially eliminate errors from an estimated value. The received signal has convoluted influences through the transmission line, so that observation of the continual symbols of periodic pilot signals on the frequency axis shows just a phase shift by the CFO. Therefore, the CFO can be analytically found from the continual symbols of periodic pilot signals, thereby allowing the DCO to be estimated and both the CFO and the DCO to be compensated for.
摘要翻译：通过传输线传送的接收信号可以补偿CFO和DCO，以改善接收信号的SNR，最终导致错误率的有效改善。在这方面，已经研究了用于估计和补偿CFO和DCO的方法，例如使用导频信号或盲法。然而，如同ML方法一样，这些方法将需要大量的计算，以便在存在DCO的情况下估计CFO，或从不从本质上消除估计值的误差。接收到的信号通过传输线路产生卷积影响，从而在频率轴上观察到周期性导频信号的连续符号只是CFO的相移。因此，可以从周期性导频信号的连续符号中分析地找到CFO，从而允许估计DCO，并且补偿CFO和DCO。

10. 发明申请

US20120014825A1 ROOTS TYPE FLUID MACHINE 有权
标题翻译：滚筒式流体机
公开(公告)号：US20120014825A1
公开(公告)日：2012-01-19
申请号：US13180873
申请日：2011-07-12
申请人： Yuya Izawa , Shinya Yamamoto , Takashi Ban , Takayuki Imai , Katsumi Yamashita , Yasunaka Hanaoka
发明人： Yuya Izawa , Shinya Yamamoto , Takashi Ban , Takayuki Imai , Katsumi Yamashita , Yasunaka Hanaoka
IPC分类号： F04C15/06
CPC分类号： F04C18/084 , F04C18/086 , F04C18/126 , F04C27/006 , F04C29/122
摘要： A roots type fluid machine includes a case having a side wall, a pair of rotary shafts provided in the case, a pair of rotors engaged with each other and fixed to the pair of rotary shafts so as to extend axially, respectively, a suction space formed by the case and the pair of rotors for introducing fluid, a discharge space formed by the case for discharging fluid and the pair of rotors and a transfer chamber formed by the case and the rotor. The rotor has a rotor end surface. A clearance is formed between the side wall and the rotor end surface. The transfer chamber transfers gas introduced in the suction space to the discharge space in accordance with the rotation of the pair of rotors. The case has a guide groove formed in the side wall facing the rotor end surface. Gas leaked from the discharge space into the clearance is introduced to the transfer chamber through the guide groove.
摘要翻译：根型流体机械包括具有侧壁的壳体，设置在壳体中的一对旋转轴，一对彼此接合并固定到一对旋转轴的转子，以分别轴向延伸到吸入空间由壳体和用于引入流体的一对转子形成，由用于排出流体的壳体和一对转子形成的排出空间以及由壳体和转子形成的传送室。转子具有转子端面。在侧壁和转子端面之间形成间隙。传送室根据一对转子的旋转将吸入空间中引入的气体传送到放电空间。壳体具有形成在面向转子端面的侧壁中的引导槽。从排出空间泄漏到间隙的气体通过引导槽被引入传送室。

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