专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 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。

2. 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。

3. 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。

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

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。

6. 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式