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51. 发明授权

US07121091B2 Pump unit 失效
公开(公告)号：US07121091B2
公开(公告)日：2006-10-17
申请号：US11330329
申请日：2006-01-12
申请人： Ryota Ohashi , Hironori Sumomozawa
发明人： Ryota Ohashi , Hironori Sumomozawa
IPC分类号： F16D31/02 , F16D39/00
CPC分类号： F16H57/0434 , F04B1/2064 , F04B1/22 , F04B1/324 , F04B23/06 , F04B23/106 , F04B23/12 , F04B49/002 , F04B49/24 , F04B2205/173 , F16D31/02 , F16H57/04 , F16H61/4043 , F16H61/4139
摘要： The present invention provides a pump unit including at least one hydraulic pump with inlet and outlet ports, a pump case for accommodating the hydraulic pump having an opening through which the hydraulic pump is insertable, and a lid, called a center section, closing the pump case. The center section forms a pair of inlet/outlet passages communicating an end with the inlet and outlet ports of the hydraulic pump and an end opening through a pump case abutting surface of the center section, and a first charging passage by which hydraulic fluid is fed through the pump case abutting surface of the center section. At least one of the pump case and the center section communicates the first charging passage with the pair of inlet/outlet passages via a first hydraulic fluid feeding valve preventing the reverse flow into said first charging passage.

52. 发明授权

US07028472B2 Pump unit 失效
公开(公告)号：US07028472B2
公开(公告)日：2006-04-18
申请号：US10864571
申请日：2004-06-10
申请人： Ryota Ohashi , Hironori Sumomozawa
发明人： Ryota Ohashi , Hironori Sumomozawa
IPC分类号： F16D31/02 , F16D39/00
CPC分类号： F16H57/0434 , F04B1/2064 , F04B1/22 , F04B1/324 , F04B23/06 , F04B23/106 , F04B23/12 , F04B49/002 , F04B49/24 , F04B2205/173 , F16D31/02 , F16H57/04 , F16H61/4043 , F16H61/4139
摘要： The present invention provides a pump unit including at least one hydraulic pump with inlet and outlet ports, a pump case for accommodating the hydraulic pump having an opening through which the hydraulic pump is insertable, and a lid, called a center section, closing the pump case. The center section forms a pair of inlet/outlet passages communicating an end with the inlet and outlet ports of the hydraulic pump and an end opening through a pump case abutting surface of the center section, and a first charging passage by which hydraulic fluid is fed through the pump case abutting surface of the center section. At least one of the pump case and the center section communicates the first charging passage with the pair of inlet/outlet passages via a first hydraulic fluid feeding valve preventing the reverse flow into said first charging passage.

53. 发明申请

US20050098363A1 Pump unit and working vehicle 失效
标题翻译：泵单元和作业车
公开(公告)号：US20050098363A1
公开(公告)日：2005-05-12
申请号：US10981539
申请日：2004-11-05
申请人： Ryota Ohashi , Hironori Sumomozawa
发明人： Ryota Ohashi , Hironori Sumomozawa
IPC分类号： B60K17/10 , B60K17/28 , F02D29/00 , F02D29/04 , F04B23/04
CPC分类号： B60K17/28 , B60K17/10
摘要： There is provided a pump unit for transmitting mechanical power from a driving source through fluid power to first and second hydraulic motor units allocated and arranged on both sides in a width direction of a vehicle so as to be output to a pair of right and left driving wheels. The pump unit includes an input shaft operatively connected to the driving source; first and second pump shafts operatively connected to the input shaft; first and second hydraulic pump bodies driven by the first and second pump shafts, respectively, and fluidly connected to the first and second hydraulic motor units, respectively; a housing for supporting the input shaft, the first pump shaft and the second pump shaft and, also, containing therein the first and second hydraulic pump bodies; and a PTO device contained in the housing. The PTO device has a PTO shaft supported by the housing so as to be substantially parallel to the input shaft. The housing is configured to support the input shaft and the PTO shaft so that the input shaft is arranged at substantially a central portion in the width direction of the vehicle and the PTO shaft is displaced to and arranged on one side in the width direction of the vehicle with said input shaft as a reference, when the housing is mounted in the working vehicle.
摘要翻译：提供了一种泵单元，用于将来自驱动源的机械动力通过流体动力传递到在车辆的宽度方向上分配和布置在两侧的第一和第二液压马达单元，以便输出到一对左右驾驶车轮。泵单元包括可操作地连接到驱动源的输入轴; 第一和第二泵轴可操作地连接到输入轴; 分别由第一和第二泵轴驱动并分别流体连接到第一和第二液压马达单元的第一和第二液压泵体; 用于支撑输入轴的壳体，第一泵轴和第二泵轴，并且还包含第一和第二液压泵体; 以及包含在壳体中的PTO装置。 PTO装置具有由壳体支撑以便基本上平行于输入轴的PTO轴。壳体被构造成支撑输入轴和PTO轴，使得输入轴布置在车辆宽度方向上的大致中心部分处，并且PTO轴移位并设置在车辆的宽度方向上的一侧当所述壳体安装在所述工作车辆中时，以所述输入轴为基准的车辆。

54. 发明授权

US06772591B2 Pump unit 有权
标题翻译：泵单元
公开(公告)号：US06772591B2
公开(公告)日：2004-08-10
申请号：US10166770
申请日：2002-06-12
申请人： Ryota Ohashi , Hironori Sumomozawa
发明人： Ryota Ohashi , Hironori Sumomozawa
IPC分类号： F16H3900
CPC分类号： F16H57/0434 , F04B1/2064 , F04B1/22 , F04B1/324 , F04B23/06 , F04B23/106 , F04B23/12 , F04B49/002 , F04B49/24 , F04B2205/173 , F16D31/02 , F16H57/04 , F16H61/4043 , F16H61/4139
摘要： The present invention provides a pump unit including at least one hydraulic pump with inlet and outlet ports, a pump case for accommodating the hydraulic pump having an opening through which the hydraulic pump is insertable, and a lid, called a center section, closing the pump case. The center section forms a pair of inlet/outlet passages communicating an end with the inlet and outlet ports of the hydraulic pump and an end opening through a pump case abutting surface of the center section, and a first charging passage by which hydraulic fluid is fed through the pump case abutting surface of the center section. At least one of the pump case and the center section communicates the first charging passage with the pair of inlet/outlet passages via a first hydraulic fluid feeding valve preventing the reverse flow into said first charging passage.
摘要翻译：本发明提供了一种泵单元，其包括具有入口和出口的至少一个液压泵，用于容纳液压泵的泵壳体，该液压泵具有可插入液压泵的开口，以及称为中心部分的盖子，案件。中心部分形成一对入口/出口通道，其一端与液压泵的入口和出口连通，以及通过中心部分的泵壳抵接表面的端部开口，以及第一充气通道，液压流体被供给通过泵壳抵靠中心部分的表面。泵壳和中心部分中的至少一个通过第一液压流体供给阀将第一充电通道与一对入口/出口通道连通，防止反向流入所述第一充电通道。

55. 发明授权

US06736605B2 Tandem pump unit 有权
公开(公告)号：US06736605B2
公开(公告)日：2004-05-18
申请号：US10265454
申请日：2002-10-07
申请人： Ryota Ohashi , Hironori Sumomozawa
发明人： Ryota Ohashi , Hironori Sumomozawa
IPC分类号： F04B126
CPC分类号： F16H57/04 , F04B1/22 , F04B1/324 , F04B23/02 , F04B23/06 , F04B49/002 , F04B2205/173
摘要： The present invention provides a tandem pump unit that includes: a first hydraulic pump and a second hydraulic pump respectively having a first pump shaft and a second pump shaft respectively having adjacent ends connected together so that the first and second pump shafts are coaxially aligned and non-rotatably connected in tandem; a common housing for accommodating the first hydraulic pump and the second hydraulic pump; and a first center section and a second center section that respectively support the first and second hydraulic pumps.

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