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1. 发明申请

US20070183911A1 Filter, piston pump using the filter, and method of mounting the filter in a valve seat member of the piston pump 有权
标题翻译：使用过滤器的过滤器，活塞泵以及将过滤器安装在活塞泵的阀座构件中的方法
公开(公告)号：US20070183911A1
公开(公告)日：2007-08-09
申请号：US11653391
申请日：2007-01-16
申请人： Junichi Maeda , Tomoo Harada
发明人： Junichi Maeda , Tomoo Harada
IPC分类号： B01D24/00 , F04B19/00
CPC分类号： F04B53/20 , B60T8/4031 , F04B1/0421 , F04B1/0452 , F04B53/10
摘要： A filter to be mounted in a valve seat member for filtering liquid is proposed which can be manufactured without a drawing step, thereby improving productivity and cost performance of a piston pump in which such a filter is mounted. The filter is a flat metal plate including a main body formed with a plurality of filter holes in a central portion thereof, and a plurality of projections integrally and radially outwardly extending from a perimeter of the main body so as to be circumferentially spaced apart from each other. The filter is pushed into a filter mounting hole formed in a valve seat member of a discharge valve in a piston pump with the projections bent toward the opening of the filter mounting hole while being pressed against the inner surface of the filter mounting hole under an elastic restoring force and fixed to the valve seat member.
摘要翻译：提出安装在用于过滤液体的阀座构件中的过滤器，其可以在没有拉伸步骤的情况下制造，从而提高安装这种过滤器的活塞泵的生产率和成本性能。该过滤器是一个平板金属板，它包括一个在其中心部分形成有多个过滤孔的主体，以及从主体的周边整体地和径向向外延伸的多个突起，其他。过滤器被推入形成在活塞泵的排出阀的阀座构件中的过滤器安装孔，其中突起朝向过滤器安装孔的开口弯曲，同时在弹性件的下方按压过滤器安装孔的内表面恢复力并固定到阀座构件。

2. 发明授权

US08043072B2 Filter, piston pump using the filter, and method of mounting the filter in a valve seat member of the piston pump 有权
标题翻译：使用过滤器的过滤器，活塞泵以及将过滤器安装在活塞泵的阀座构件中的方法
公开(公告)号：US08043072B2
公开(公告)日：2011-10-25
申请号：US11653391
申请日：2007-01-16
申请人： Junichi Maeda , Tomoo Harada
发明人： Junichi Maeda , Tomoo Harada
IPC分类号： F04B23/00 , F04B53/20
CPC分类号： F04B53/20 , B60T8/4031 , F04B1/0421 , F04B1/0452 , F04B53/10
摘要： A filter to be mounted in a valve seat member for filtering liquid is proposed which can be manufactured without a drawing step, thereby improving productivity and cost performance of a piston pump in which such a filter is mounted. The filter is a flat metal plate including a main body formed with a plurality of filter holes in a central portion thereof, and a plurality of projections integrally and radially outwardly extending from a perimeter of the main body so as to be circumferentially spaced apart from each other. The filter is pushed into a filter mounting hole formed in a valve seat member of a discharge valve in a piston pump with the projections bent toward the opening of the filter mounting hole while being pressed against the inner surface of the filter mounting hole under an elastic restoring force and fixed to the valve seat member.
摘要翻译：提出安装在用于过滤液体的阀座构件中的过滤器，其可以在没有拉伸步骤的情况下制造，从而提高安装这种过滤器的活塞泵的生产率和成本性能。该过滤器是一个平板金属板，它包括一个在其中心部分形成有多个过滤孔的主体，以及从主体的周边整体地和径向向外延伸的多个突起，其他。过滤器被推入形成在活塞泵的排出阀的阀座构件中的过滤器安装孔，其中突起朝向过滤器安装孔的开口弯曲，同时在弹性件的下方按压过滤器安装孔的内表面恢复力并固定到阀座构件。

3. 发明授权

US07891959B2 Piston pump 有权
标题翻译：活塞泵
公开(公告)号：US07891959B2
公开(公告)日：2011-02-22
申请号：US11348251
申请日：2006-02-07
申请人： Tomoo Harada , Junichi Maeda
发明人： Tomoo Harada , Junichi Maeda
IPC分类号： F04B37/00 , F04B53/12
CPC分类号： F04B1/0408 , B60T8/4031 , F04B1/0448 , F04B1/0452 , F04B53/126
摘要： A piston pump includes a pump housing having a suction port and a discharge port. A piston is mounted in a bore of the pump housing and forms a pump chamber. Suction and discharge valves are provided on the opposite sides of the pump chamber, respectively. The suction valve includes a retainer which is mounted on the piston and has a valve bore which communicates with the suction port, a valve seat which is formed at the pump chamber end of the valve bore, and a valve body holding portion and a spring holding portion. The suction valve also includes a valve body which can seat and unseat from the valve seat and which is received and held by the valve body holding portion, and a spring which is received and held by the spring holding portion and biases the valve body towards the valve seat.
摘要翻译：活塞泵包括具有吸入口和排出口的泵壳体。活塞安装在泵壳体的孔中并形成泵室。分别在泵室的相对侧设置吸入和排出阀。吸入阀包括安装在活塞上并具有与吸入口连通的阀孔的保持器，形成在阀孔的泵室端部处的阀座，以及阀体保持部和弹簧保持部一部分。吸入阀还包括阀体，该阀体可以从阀座位置并且离开阀座并被阀体保持部分容纳和保持;以及弹簧，该弹簧被弹簧保持部分接收和保持，并将阀体朝向阀座。

4. 发明授权

US07704058B2 Piston pump 有权
标题翻译：活塞泵
公开(公告)号：US07704058B2
公开(公告)日：2010-04-27
申请号：US11832072
申请日：2007-08-01
申请人： Tomoo Harada , Junichi Maeda
发明人： Tomoo Harada , Junichi Maeda
IPC分类号： F04B53/12
CPC分类号： F04B1/0408 , B60T8/4031 , F04B53/143
摘要： A piston pump including a pump housing, a piston provided at the inner bore of the pump housing and assembled with an annular sealing member to form a pump chamber. The piston is configured to slide at an inner wall of the inner bore. The annular sealing member is assembled with the piston so as to slide at the inner wall of the inner bore in the axial direction together with the piston. And a first sliding range of the piston relative to the inner wall of the inner bore and a second sliding range of the annular sealing member relative to the inner wall of the inner bore do not overlap each other in the axial direction.
摘要翻译：一种活塞泵，包括泵壳体，设置在泵壳体的内孔处的活塞，并组装有环形密封构件以形成泵室。活塞构造成在内孔的内壁处滑动。环形密封构件与活塞组装，以便与活塞一起沿轴向方向在内孔的内壁处滑动。并且活塞相对于内孔的内壁的第一滑动范围和环形密封构件相对于内孔的内壁的第二滑动范围在轴向方向上彼此不重叠。

5. 发明申请

US20080031754A1 Piston Pump 有权
标题翻译：活塞泵
公开(公告)号：US20080031754A1
公开(公告)日：2008-02-07
申请号：US11832072
申请日：2007-08-01
申请人： Tomoo Harada , Junichi Maeda
发明人： Tomoo Harada , Junichi Maeda
IPC分类号： F04B35/00
CPC分类号： F04B1/0408 , B60T8/4031 , F04B53/143
摘要： A piston pump including a pump housing, a piston provided at the inner bore of the pump housing and assembled with an annular sealing member to form a pump chamber. The piston is configured to slide at an inner wall of the inner bore. The annular sealing member is assembled with the piston so as to slide at the inner wall of the inner bore in the axial direction together with the piston. And a first sliding range of the piston relative to the inner wall of the inner bore and a second sliding range of the annular sealing member relative to the inner wall of the inner bore do not overlap each other in the axial direction.
摘要翻译：一种活塞泵，包括泵壳体，设置在泵壳体的内孔处的活塞，并组装有环形密封构件以形成泵室。活塞构造成在内孔的内壁处滑动。环形密封构件与活塞组装，以便与活塞一起沿轴向方向在内孔的内壁处滑动。并且活塞相对于内孔的内壁的第一滑动范围和环形密封构件相对于内孔的内壁的第二滑动范围在轴向方向上彼此不重叠。

6. 发明申请

US20060177326A1 Piston pump 有权
标题翻译：活塞泵
公开(公告)号：US20060177326A1
公开(公告)日：2006-08-10
申请号：US11348251
申请日：2006-02-07
申请人： Tomoo Harada , Junichi Maeda
发明人： Tomoo Harada , Junichi Maeda
IPC分类号： F04B19/00
CPC分类号： F04B1/0408 , B60T8/4031 , F04B1/0448 , F04B1/0452 , F04B53/126
摘要： A piston pump includes a pump housing having a suction port and a discharge port. A piston is mounted in a bore of the pump housing and forms a pump chamber. Suction and discharge valves are provided on the opposite sides of the pump chamber, respectively. The suction valve includes a retainer which is mounted on the piston and has a valve bore which communicates with the suction port, a valve seat which is formed at the pump chamber end of the valve bore, and a valve body holding portion and a spring holding portion. The suction valve also includes a valve body which can seat and unseat from the valve seat and which is received and held by the valve body holding portion, and a spring which is received and held by the spring holding portion and biases the valve body towards the valve seat.
摘要翻译：活塞泵包括具有吸入口和排出口的泵壳体。活塞安装在泵壳体的孔中并形成泵室。分别在泵室的相对侧设置吸入和排出阀。吸入阀包括安装在活塞上并具有与吸入口连通的阀孔的保持器，形成在阀孔的泵室端部处的阀座，以及阀体保持部和弹簧保持部一部分。吸入阀还包括阀体，该阀体可以从阀座位置并且离开阀座并被阀体保持部分容纳和保持;以及弹簧，该弹簧被弹簧保持部分接收和保持，并将阀体朝向阀座。

7. 发明授权

US06474752B2 Rotary pump and braking device using same 有权
标题翻译：旋转泵和制动装置使用相同
公开(公告)号：US06474752B2
公开(公告)日：2002-11-05
申请号：US09897024
申请日：2001-07-03
申请人： Tomoo Harada , Takahiro Yamaguchi , Toshiya Morikawa
发明人： Tomoo Harada , Takahiro Yamaguchi , Toshiya Morikawa
IPC分类号： B60T840
CPC分类号： B60T8/4275 , B60T8/4031 , B60T8/4872 , F04C2/102 , F04C15/0042 , F04C2230/231 , F04C2230/602
摘要： In a rotary pump, an outer rotor and an inner rotor are assembled in a casing such that, when a clearance between an inner teeth portion of the outer rotor and an outer teeth portion of the inner rotor is substantially nullified at a first closed gap portion having a maximum volume formed between the inner teeth portion and the outer teeth portion, a clearance between the outer rotor and the casing on a side of the first closed gap portion and a clearance between the outer rotor and the casing on a side of a second closed gap portion having a minimum volume, become substantially an equivalent interval. As a result, the outer rotor and the casing can be brought into contact with each other on the side of the second closed gap portion rather than the central axis of the inner rotor. Even in a high pressure discharge operation, the outer rotor is not locked by being squeezed between the inner rotor and the casing.
摘要翻译：在旋转泵中，外转子和内转子组装在壳体中，使得当外转子的内齿部分与内转子的外齿部分之间的间隙在第一闭合间隙部分基本上无效时具有形成在内齿部分和外齿部分之间的最大体积，在第一闭合间隙部分的一侧上的外转子和壳体之间的间隙以及外转子和壳体之间的间隙在第二闭合间隙部分具有最小体积的闭合间隙部分变成基本上等效的间隔。结果，外转子和壳体可以在第二闭合间隙部分的侧面而不是内转子的中心轴线彼此接触。即使在高压放电操作中，外转子也不被内转子和壳体之间的挤压而锁定。

8. 发明授权

US06270169B1 Rotary pump and braking device using same 有权
标题翻译：旋转泵和制动装置使用相同
公开(公告)号：US06270169B1
公开(公告)日：2001-08-07
申请号：US09170052
申请日：1998-10-13
申请人： Tomoo Harada , Takahiro Yamaguchi , Toshiya Morikawa
发明人： Tomoo Harada , Takahiro Yamaguchi , Toshiya Morikawa
IPC分类号： B60T840
CPC分类号： B60T8/4275 , B60T8/4031 , B60T8/4872 , F04C2/102 , F04C15/0042 , F04C2230/231 , F04C2230/602
摘要： In a rotary pump, an outer rotor and an inner rotor are assembled in a casing such that, when a clearance between an inner teeth portion of the outer rotor and an outer teeth portion of the inner rotor is substantially nullified at a first closed gap portion having a maximum volume formed between the inner teeth portion and the outer teeth portion, a clearance between the outer rotor and the casing on a side of the first closed gap portion and a clearance between the outer rotor and the casing on a side of a second closed gap portion having a minimum volume, become substantially an equivalent interval. As a result, the outer rotor and the casing can be brought into contact with each other on the side of the second closed gap portion rather than the central axis of the inner rotor. Even in a high pressure discharge operation, the outer rotor is not locked by being squeezed between the inner rotor and the casing.
摘要翻译：在旋转泵中，外转子和内转子组装在壳体中，使得当外转子的内齿部分与内转子的外齿部分之间的间隙在第一闭合间隙部分基本上无效时具有形成在内齿部分和外齿部分之间的最大体积，在第一闭合间隙部分的一侧上的外转子和壳体之间的间隙以及外转子和壳体之间的间隙在第二闭合间隙部分具有最小体积的闭合间隙部分变成基本上等效的间隔。结果，外转子和壳体可以在第二闭合间隙部分的侧面而不是内转子的中心轴线彼此接触。即使在高压放电操作中，外转子也不被内转子和壳体之间的挤压而锁定。

9. 发明授权

US5577896A Pump 失效
标题翻译：泵
公开(公告)号：US5577896A
公开(公告)日：1996-11-26
申请号：US265110
申请日：1994-06-24
申请人： Tomoo Harada
发明人： Tomoo Harada
IPC分类号： B60T8/40 , F04B5/02 , F04B23/06 , F04B53/12 , F04B3/00
CPC分类号： F04B5/02 , B60T8/4031 , F04B23/06 , F04B53/122 , F04B53/126
摘要： An object of the present invention is to provide a pump which suppresses a decrease in the volumetric efficiency of the pump to a great extent even in case that the kinematic viscosity of a fluid is high with a compact structure of the pump itself. The present invention, a pump provided with a first pump mechanism and a second pump mechanism comprises a housing having therein a first pump chamber, a second pump chamber, an intake port communicated with the first pump chamber, and a discharge port communicated with the second pump chamber, first valve means which open the communicating passage when the second pump chamber is compressed and close the communicating passage when the second pump chamber is expanded, a piston which expands the second pump chamber when the first pump chamber is compressed, and compresses the second pump chamber when the first pump chamber is expanded in accordance with movement thereof, second valve means which open so as to permit fluid to flow into the first pump chamber when the first pump chamber is expanded and close so as to prevent fluid in the first pump chamber from flowing out of the first pump chamber when the first pump chamber is compressed, and third valve means which open so as to discharge pressurized fluid in the second pump chamber when the second pump chamber is compressed and close when the second pump chamber is expanded.
摘要翻译：本发明的目的是提供一种即使在泵本身的紧凑结构的情况下流体的运动粘度高的情况下也能够大大地抑制泵的体积效率的泵。本发明提供了一种具有第一泵机构和第二泵机构的泵，具有：壳体，其具有第一泵室，第二泵室，与第一泵室连通的进气口，以及与第二泵室连通的排出口泵室，当所述第二泵室被压缩时，所述第二泵室被压缩并打开所述连通通道的第一阀装置，当所述第二泵室膨胀时闭合所述连通通道;在所述第一泵室被压缩时使所述第二泵室膨胀的活塞，第二泵室，当第一泵室根据其运动而膨胀时，第二阀装置打开，以便当第一泵室膨胀和关闭时允许流体流入第一泵室，以防止第一泵室中的流体在第一泵室当第一泵室被压缩时，泵室从第一泵室流出，以及打开以便排出的第三阀装置当第二泵室被膨胀时第二泵室被压缩并关闭时，第二泵室中的加压流体。

10. 发明授权

US08672418B2 Sealing structure for piston and piston pump and brake hydraulic pressure control device incorporating the structure 有权
标题翻译：结合活塞和活塞泵的密封结构以及制动液压控制装置
公开(公告)号：US08672418B2
公开(公告)日：2014-03-18
申请号：US12945302
申请日：2010-11-12
申请人： Tomoo Harada , Tsunekazu Nishida
发明人： Tomoo Harada , Tsunekazu Nishida
IPC分类号： B60T13/18
CPC分类号： F04B1/0408 , B60T8/4031 , F04B53/126 , F04B53/143
摘要： A sealing structure is provided wherein an annular groove formed in a pump cylinder of a piston pump receives therein a seal ring made of a synthetic resin material and having an inner circumferential surface fluid-tightly contacting an outer circumferential surface of the pump piston and an O-ring arranged on the outer circumferential side of the seal ring and urging the seal ring radially inward. The seal ring is formed at its axial end portions with flange portions for preventing the O-ring from coming off. In the state that the seal ring and the O-ring are fitted in the annular groove, the flange portions do not receive a load from the O-ring, and a surface pressure which the seal ring applies to the outer circumferential surface of the piston at an axial center portion thereof is set to be higher than surface pressures which it applies to the outer circumferential surface of the piston at axial end portions thereof.
摘要翻译：提供一种密封结构，其中形成在活塞泵的泵筒中的环形槽容纳由合成树脂材料制成的密封环，并且具有与泵活塞的外周表面流体紧密接触的内周表面和O 设置在密封环的外周侧并径向向内推动密封环。密封环在其轴向端部处形成有用于防止O形环脱落的凸缘部分。在密封环和O形环装配在环形槽中的状态下，凸缘部分不会从O形环中受到负载，并且密封环施加到活塞外周表面的表面压力其轴向中心部分被设定为高于其在轴向端部处对活塞的外周面施加的表面压力。

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