公开(公告)号：US5842837A

公开(公告)日：1998-12-01

申请号：US703878

申请日：1996-08-27

申请人： Hideki Nakayoshi ,  Naoki Oogushi

发明人： Hideki Nakayoshi ,  Naoki Oogushi

IPC分类号： F04C11/00 ,  F04C14/24 ,  F04C14/26 ,  F04C15/06 ,  F04B49/00

CPC分类号： F04C15/062 ,  F04C11/001

摘要： A tandem pump apparatus is featured having a main suction passage connected to a fluid source. The main suction passage branches into first and second suction passages which, in turn, feed into first and second pumps. Each pump discharges a portion of the fluid to a return passage that is fluidly connected to the suction port of each respective pump. In each return passage, a return control valve is disposed to control the amount of fluid returned to the suction port. The tandem pump featured in this invention exhibits increased efficiency and decreased noise.

摘要翻译： 串联泵装置具有连接到流体源的主吸入通道。 主吸入通道分支进入第一和第二抽吸通道，进入第一和第二泵。 每个泵将一部分流体排放到流体连接到每个相应泵的吸入口的返回通道。 在每个返回通道中，设置有返回控制阀以控制返回到吸入口的流体的量。 本发明特征的串联泵表现出增加的效率和降低的噪音。

公开(公告)号：US5398505A

公开(公告)日：1995-03-21

申请号：US142927

申请日：1993-10-29

申请人： Naoki Oogushi ,  Hideki Nakayoshi

发明人： Naoki Oogushi ,  Hideki Nakayoshi

IPC分类号： B62D5/07 ,  F01P7/04 ,  F04C11/00 ,  F04C14/22 ,  F16D31/02 ,  F15B11/00

CPC分类号： F04C14/226 ,  B62D5/07 ,  F01P7/04 ,  F04C11/00 ,  Y10T137/2665

摘要： A fluid pressure driving system for a vehicle includes a reservoir tank in which an amount of fluid is stored, a variable capacity oil pump sucking the fluid from the reservoir tank and discharging the resultant fluid, a control device for adjusting a quantity of the fluid discharged from the variable oil pump, and a distributor valve having an inlet port for receiving the fluid from the variable capacity oil pump. The distributor valve discharges a fixed amount of the fluid and the remaining amount of the fluid from a first outlet port thereof and a second outlet port thereof, respectively. A first passage connects the first outlet port of the distributor valve and the reservoir tank. A second passage connects the second outlet port of the distributor valve and the reservoir tank. A power steering device is associated with a steering wheel and disposed in the first passage. A hydraulic motor is disposed in the second passage, and a cooling fan is mounted rotatably on the hydraulic motor.

摘要翻译： 一种用于车辆的流体压力驱动系统包括：储存容器，存储有流体的容器;可变容量的油泵，其从所述储存箱吸入所述流体并排出所述流体;控制装置，用于调节排出的流体的量; 以及具有用于从可变容量油泵接收流体的入口的分配器阀。 分配器阀分别从其第一出口和第二出口排出固定量的流体和剩余量的流体。 第一通道连接分配阀的第一出口和储存罐。 第二通道连接分配阀的第二出口和储存罐。 动力转向装置与方向盘相关联并且设置在第一通道中。 液压马达设置在第二通道中，并且冷却风扇可旋转地安装在液压马达上。

公开(公告)号：US5950431A

公开(公告)日：1999-09-14

申请号：US957183

申请日：1997-10-24

申请人： Naoki Oogushi

发明人： Naoki Oogushi

IPC分类号： F01P5/04 ,  F01P7/04 ,  F04B49/22 ,  F15B21/00 ,  F16D31/02

CPC分类号： F04B49/22 ,  F04B23/06 ,  F15B11/17 ,  F15B2211/20576 ,  F15B2211/50536

摘要： A tandem pump apparatus having a first hydraulic pump for supplying operating fluid to a first actuator and a second hydraulic pump for supplying operating fluid to a second actuator in cooperation with each other is disclosed. Each hydraulic pump is provided with a flow rate control valve for refluxing a surplus of flow discharged from the pump to a suction side of the pump through a relief passage. A connecting passage connects the first relief passage downstream from the first flow rate control valve and the second relief passage downstream from the second flow rate control valve. A check valve is provided in the connecting passage for allowing operating fluid to flow from one of the relief passages that has a relatively great reflux flow rate to the other relief passage having a relatively small reflux flow rate, thereby ensuring sufficient supercharge into the two pump to achieve sufficient restraint of cavitation.

摘要翻译： 公开了一种串联泵装置，其具有用于向第一致动器供应工作流体的第一液压泵和用于将工作流体彼此协作地供应到第二致动器的第二液压泵。 每个液压泵设置有流量控制阀，用于通过释放通道回流从泵排出的多余的流量到泵的吸入侧。 连接通道将第一流量控制阀下游的第一泄压通路与第二流量控制阀下游的第二泄压通路连接。 在连接通道中设有止回阀，用于允许工作流体从具有相对大的回流流量的一个释放通道流向具有相对小的回流流量的另一泄压通道，从而确保足够的增压到两个泵 达到充分的气蚀限制。

公开(公告)号：US5490770A

公开(公告)日：1996-02-13

申请号：US348162

申请日：1994-11-28

申请人： Naoki Oogushi

发明人： Naoki Oogushi

IPC分类号： B62D5/06 ,  F01C21/08 ,  F04C14/22 ,  F04C14/26 ,  F04C2/344 ,  F04C15/04

CPC分类号： F04C14/226 ,  B62D5/062 ,  F01C21/0863 ,  F04C14/26

摘要： When one chamber of vane pump is located at an end of a discharge process and is compressed at maximum, pressure in the chamber is higher than the discharge pressure of the pump. Vanes are supported in slits of a rotor. A passage connecting the one chamber and inner sides of the vanes in the slits supplies pressure to push the vanes onto an inner surface of a cam-ring of the pump.

摘要翻译： 当叶片泵的一个腔室位于排放过程的末端并且被最大压缩时，腔室中的压力高于泵的排出压力。 叶片支撑在转子的狭缝中。 连接狭缝中的叶片的一个室和内侧的通道提供压力以将叶片推到泵的凸轮环的内表面上。