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1. 发明授权

US4856264A Hydraulic transmission apparatus 失效
标题翻译：液压传动装置
公开(公告)号：US4856264A
公开(公告)日：1989-08-15
申请号：US146964
申请日：1988-01-22
申请人： Sadanori Nishimura , Hiroshige Makita , Tomoaki Ishikawa
发明人： Sadanori Nishimura , Hiroshige Makita , Tomoaki Ishikawa
IPC分类号： A01D34/68 , B62D51/00
CPC分类号： A01D34/6806 , B62D51/004 , A01D2034/6843 , A01D2101/00 , Y10T74/19009
摘要： A hydraulic transmission apparatus comprises an input unit to which power from a power source is applied in a first direction, a direction changing unit hydraulically coupled to the input unit for extracting power in a second direction which is different from the first direction, and a case supporting the input unit and the direction changing unit. The input unit and the direction changing unit comprise an oil pump and an oil motor mounted respectively on one surface and another surface of the case. The case is filled with working oil for operating the oil pump and the oil motor. An operating device for a lawn mower has a first power transmitting path for transmitting power from the power source to a drive wheel, the first power transmitting path having a hydraulic transmission apparatus and a first clutch for selectively rotating and stopping the drive wheel, and a second power transmitting path for transmitting power from the power source to a grass cutter, the second power transmitting path including a second clutch for selectively rotating and stopping the grass cutter. The first clutch is independently operable. The second clutch has a mechanism for inactivating the first clutch in unison therewith when the second clutch is inactivated.
摘要翻译：液压传动装置包括：输入单元，从第一方向施加来自动力源的动力;液压耦合到输入单元的方向改变单元，用于沿与第一方向不同的第二方向提取动力;壳体支持输入单元和方向改变单元。输入单元和方向改变单元包括分别安装在壳体的一个表面和另一个表面上的油泵和油马达。该油箱内装有油泵和油马达操作油。用于割草机的操作装置具有用于将动力从动力源传递到驱动轮的第一动力传递路径，第一动力传递路径具有液压传动装置和用于选择性地旋转和停止驱动轮的第一离合器，以及第二动力传递路径，用于从动力源向草地切割器传递动力，第二动力传递路径包括用于选择性地旋转和停止割草机的第二离合器。第一离合器可独立操作。第二离合器具有当第二离合器被停用时与第一离合器同步失活的机构。

2. 发明授权

US5230519A Hydraulically operated power transmission apparatus 失效
标题翻译：液压动力传动装置
公开(公告)号：US5230519A
公开(公告)日：1993-07-27
申请号：US450263
申请日：1989-12-13
申请人： Sadanori Nishimura , Hiroshige Makita , Makiro Ishimoto , Atsuyoshi Kawai , Makoto Ninomiya
发明人： Sadanori Nishimura , Hiroshige Makita , Makiro Ishimoto , Atsuyoshi Kawai , Makoto Ninomiya
IPC分类号： B60K17/10
CPC分类号： B60K17/105
摘要： A hydraulically operated power transmission apparatus transmits the output power from a power source at a selected speed ratio. The power transmission apparatus includes a casing having an opening in one end thereof, a base plate attached to the end of the casing in covering relation to the opening, the casing and the base plate jointly serving as a transmission case defining a closed space therein, a hydraulic pump having a pump drive shaft adapted to be operatively coupled to the power source, the hydraulic pump being disposed in the closed space, a hydraulic motor having a motor output shaft and drivable by a hydraulic pressure generated by the hydraulic pump, the hydraulic motor being disposed in the closed space, a pair of output shafts extending through the casing and the base plate, respectively, and disposed coaxially with each other, a differential mechanism disposed in the closed space and operable by the motor output shaft, the differential mechanism being coupled to the output shafts. The hydraulic pump, the hydraulic motor, and the differential mechanism are mounted on the base plate. The pump drive shaft, the motor output shaft, and the differential mechanism have ends rotatably supported by the base plate and opposite ends rotatably supported by the casing.
摘要翻译：液压动力传动装置以选定的速比传输来自电源的输出功率。动力传递装置包括：壳体，其一端具有开口;底板，其与所述开口相对地安装在所述壳体的端部，所述壳体和所述基板共同用作在其中限定封闭空间的变速箱; 液压泵，其具有适于可操作地联接到所述动力源的泵驱动轴，所述液压泵设置在所述封闭空间中;液压马达，具有马达输出轴，并且可由所述液压泵产生的液压驱动;所述液压泵电动机设置在封闭空间中，一对输出轴分别延伸穿过壳体和基板并且彼此同轴设置;差速机构，设置在封闭空间中并由电动机输出轴可操作;差速机构联接到输出轴。液压泵，液压马达和差速机构安装在基板上。泵驱动轴，马达输出轴和差速机构具有由基板可旋转地支撑的端部和由壳体可旋转地支撑的相对端。

3. 发明授权

US5412948A Hydrostatic continuously variable transmission 失效
标题翻译：静液压无级变速器
公开(公告)号：US5412948A
公开(公告)日：1995-05-09
申请号：US120524
申请日：1993-09-14
申请人： Norio Komura , Hiroshige Makita , Tomoaki Ishikawa , Taro Miyakawa
发明人： Norio Komura , Hiroshige Makita , Tomoaki Ishikawa , Taro Miyakawa
IPC分类号： B60K17/10 , F16H61/40 , F16H61/4026 , F16H61/4183 , F16D31/02
CPC分类号： F16H61/4026 , B60K17/105 , F16H61/40 , F16H61/4183 , F16H61/4017 , Y10T137/7792 , Y10T137/7869 , Y10T137/7928
摘要： A ball and piston valve for controlling the flow of hydraulic fluid to a motive means have the ball and piston spring biased in opposing directions and with both initially subject to a first hydraulic fluid pressure that allows the springs to cause the ball to be unseated from its seat whereby fluid is directed to a fluid tank and wherein the ball is of sufficiently larger diameter than the piston that upon an increase in fluid pressure the ball is seated and remains seated when the pressure drops to the first hydraulic fluid pressure whereby the motive means to which the fluid is directed when the ball is seated does not have a sudden lurch upon a subsequent increase in pressure.
摘要翻译：用于控制液压流体到动力装置的球和活塞阀使球和活塞弹簧以相反的方向偏置，并且两者最初都受到第一液压流体压力，其允许弹簧使球从其中脱离其中流体被引导到流体箱，并且其中所述球具有比所述活塞足够大的直径，其在所述球被置于并且当所述压力下降到所述第一液压流体压力时保持就位，从而所述动力装置当球就座时流体被引导的压力在随后的压力增加时不会突然出现。

4. 发明授权

US5356347A Hydrostatic continuously variable transmission 失效
标题翻译：静液压无级变速器
公开(公告)号：US5356347A
公开(公告)日：1994-10-18
申请号：US987752
申请日：1992-12-09
申请人： Norio Komura , Hiroshige Makita , Tomoaki Ishikawa , Taro Miyakawa
发明人： Norio Komura , Hiroshige Makita , Tomoaki Ishikawa , Taro Miyakawa
IPC分类号： B60K17/10 , F16H61/40 , F16H61/4069 , F16H59/00
CPC分类号： F16H61/40 , B60K17/105 , F16H61/4017
摘要： A hydrostatic continuously variable transmission includes a closed hydraulic circuit comprising a hydraulic pump, a hydraulic motor, and an oil supply passage connected between the hydraulic pump and the hydraulic motor. The hydraulic pump selectively generates a first oil pressure lower than a first predetermined pressure level, a second slowly-changing oil pressure higher than the first predetermined pressure level when the transmission is in normal operation, and a third rapidly-changing oil pressure higher than a second predetermined pressure level higher than the first predetermined pressure level when the transmission starts to operate. The transmission also includes a first pressure-responsive valve for connecting the oil supply passage to the oil tank in response to the first oil pressure applied through the oil supply passage, and disconnecting the oil supply passage from the oil tank in response to the second oil pressure applied through the oil supply passage, and a second pressure-responsive valve for connecting the oil supply passage to the oil tank in response to the third oil pressure applied through the oil supply passage, and disconnecting the oil supply passage from the oil tank in response to the second oil pressure applied through the oil supply passage.
摘要翻译：静液压无级变速器包括一个封闭的液压回路，包括液压泵，液压马达和连接在液压泵和液压马达之间的供油通道。液压泵选择性地产生低于第一预定压力水平的第一油压，当变速器处于正常运行时高于第一预定压力水平的第二缓慢变化的油压，以及高于第一预定压力水平的第三快速变化的油压当传输开始运行时，第二预定压力水平高于第一预定压力水平。变速器还包括第一压力响应阀，用于响应于通过供油通道施加的第一油压而将供油通道连接到油箱，并且响应于第二油而将供油通道从油箱断开通过供油通道施加的压力，以及响应于通过供油通道施加的第三油压而将供油通道连接到油箱的第二压力响应阀，并且将供油通道与油箱分离响应于通过供油通道施加的第二油压。

5. 发明授权

US5125291A Transmission with hydrostatic power unit 失效
标题翻译：带静液压动力单元的变速箱
公开(公告)号：US5125291A
公开(公告)日：1992-06-30
申请号：US730043
申请日：1991-07-15
申请人： Hiroshige Makita , Mitsuru Komatsu , Norio Komura
发明人： Hiroshige Makita , Mitsuru Komatsu , Norio Komura
IPC分类号： B60K17/10
CPC分类号： F16H57/0415 , B60K17/105 , F16H57/0434 , F16H57/0493 , Y10T74/19149 , Y10T74/2186
摘要： A transmission includes a transmission casing, a speed reducer mechanism housed in the transmission casing, a hydrostatic power unit mounted on the transmission casing, the hydrostatic power unit comprising a pump having a pump shaft and a motor having a motor shaft, the pump shaft and the motor shaft extending parallel to each other, and an input shaft operatively coupled to the pump shaft. The transmission casing has an interior space divided into a first chamber in which the input shaft is disposed and a second chamber in which the speed reducer mechanism is accommodated.
摘要翻译：变速器包括变速器壳体，容纳在变速器壳体中的减速机构，安装在变速器壳体上的静液力动力单元，该静液压动力单元包括具有泵轴的泵和具有电动机轴的电动机，泵轴和电动机轴彼此平行延伸，以及可操作地联接到泵轴的输入轴。变速器壳体具有内部空间，该内部空间被分成设置有输入轴的第一室和容纳减速机构的第二室。

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