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1. 发明授权

US5673606A Swash plate actuating device for axial piston pumps and motors 失效
标题翻译：用于轴向柱塞泵和电机的斜盘驱动装置
公开(公告)号：US5673606A
公开(公告)日：1997-10-07
申请号：US701418
申请日：1996-08-22
申请人： Charles E. Rose , Dale B. Childress
发明人： Charles E. Rose , Dale B. Childress
IPC分类号： F01B3/10 , F01B3/00
CPC分类号： F01B3/108 , F01B3/106
摘要： A swash plate actuating device for an axial piston unit has a swash plate tiltably mounted within the housing. A pair of axially aligned actuating chambers defined in the housing slidably receive the opposite ends of an elongate actuator and are disposed on opposite sides of a distal end portion formed on an actuator lever connected to the swash plate. A connector has a mounting portion spanning a transverse slot in the actuator and seated on a planar surface of the actuator. A guide portion of the connector is disposed within the transverse slot and has a bearing slot slidably receiving the distal end portion of the actuator lever.
摘要翻译：用于轴向活塞单元的斜盘致动装置具有可倾斜地安装在壳体内的斜盘。限定在壳体中的一对轴向对准的致动室可滑动地容纳细长致动器的相对端，并且设置在形成在连接到斜盘上的致动器杆上的远端部分的相对侧上。连接器具有跨越致动器中的横向狭槽的安装部分，并且位于致动器的平坦表面上。连接器的引导部分设置在横向狭槽内，并具有滑动地容纳致动器杆的远端部分的轴承槽。

2. 发明授权

US06030183A Variable margin pressure control 失效
标题翻译：可变边际压力控制
公开(公告)号：US06030183A
公开(公告)日：2000-02-29
申请号：US070296
申请日：1998-04-30
申请人： Dale B. Childress
发明人： Dale B. Childress
IPC分类号： E02F9/22 , F04B49/00 , F04B49/08 , F15B11/00
CPC分类号： E02F9/2296 , E02F9/2232 , F04B49/002 , F04B49/08 , F04B2205/05 , F04B2205/06
摘要： A variable margin pressure control for a variable displacement load sensing pump comprises a body having a bore therein and a valve spool slidably disposed in the bore defining a chamber in continuous communication with a discharge passage in the body. The valve spool is movable in a first direction for communicating the discharge passage with a control port in the body and in a second direction for communicating the control port with an exhaust flow path. The valve spool is biased in the first direction by discharge fluid pressure in the chamber. A spring mechanism biases the valve spool in the second direction against the force generated by the discharge pressure with a biasing force sufficient to establish a predetermined margin pressure. A remotely controllable variable biasing force is applied against the valve spool by a device so that the margin pressure can be selectively varied in response to receiving a pressure signal. Another devices applies a load pressure generated biasing force against the valve spool in the second direction so that the margin pressure is maintained throughout the pressure operating range of the pump.
摘要翻译：用于可变排量负载感测泵的可变边际压力控制器包括其中具有孔的主体和可滑动地设置在孔中的阀芯，其限定与主体中的排放通道连续连通的室。阀芯可沿第一方向移动，用于使排出通道与主体中的控制端口和用于使控制端口与排气流路连通的第二方向。阀芯通过腔室中的排出流体压力沿第一方向偏置。弹簧机构抵抗由排出压力产生的力，利用足以建立预定的裕度压力的偏置力来使阀芯在第二方向上偏置。远程控制的可变偏置力通过装置施加到阀芯上，使得边界压力可以响应于接收到压力信号而选择性地变化。另一个装置在第二方向上施加负载压力产生的对阀芯的偏置力，使得在泵的整个压力操作范围内保持压力。

3. 发明授权

US5567123A Pump displacement control for a variable displacement pump 失效
标题翻译：可变排量泵的泵排量控制
公开(公告)号：US5567123A
公开(公告)日：1996-10-22
申请号：US526830
申请日：1995-09-12
申请人： Dale B. Childress , Noah D. Manring
发明人： Dale B. Childress , Noah D. Manring
IPC分类号： F04B49/00 , F04B13/00 , F04B49/08 , F16K31/124
CPC分类号： F04B49/08 , F04B2201/1202 , F04B2201/1204
摘要： A pump displacement control for a variable displacement pump includes a torque control valve disposed between a variable torque limiter and a force applying device disposed in axial alignment within a common bore. A sleeve and a valve spool are movable relative to each other to establish a first condition communicating discharge pressure into an actuator chamber to move a swashplate toward a minimum displacement position against the bias of a spring or a second condition communicating the actuating chamber with an exhaust passage to allow the spring to move the swashplate toward its maximum displacement position. A torque control piston disposed between opposing springs resiliently bias the valve spool in a direction to establish the second condition when control fluid is directed into a control chamber. Pump discharge pressure communicated into a pressure chamber exerts a force against the valve spool proportional to the discharge pressure so that the valve spool moves in a second direction to establish the first condition when the control force exceeds the biasing force exerted by the torque limiter.
摘要翻译：用于可变排量泵的泵排量控制器包括设置在可变扭矩限制器和在公共孔内轴向对准设置的施力装置之间的扭矩控制阀。套管和阀芯可相对于彼此移动以建立将排放压力连通到致动器室中的第一状态，以克服弹簧的偏压将斜盘移向最小位移位置，或者使致动室与排气连通的第二状态通道以允许弹簧将斜盘移向其最大位移位置。设置在相对弹簧之间的扭矩控制活塞在控制流体被引导到控制室中时沿一个方向弹性地偏压阀芯以建立第二状态。连通到压力室的泵排出压力与排出压力成比例地施加抵抗阀芯的力，使得阀芯在第二方向上移动，以在控制力超过扭矩限制器施加的偏压力时建立第一状态。

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