公开(公告)号：US5279205A

公开(公告)日：1994-01-18

申请号：US990969

申请日：1992-12-15

申请人： Guy C. Carlson, Jr. ,  William K. Engel ,  Robert J. Huebner ,  Donald H. Sherman

发明人： Guy C. Carlson, Jr. ,  William K. Engel ,  Robert J. Huebner ,  Donald H. Sherman

IPC分类号： F01B3/02 ,  F01B3/00 ,  F01B13/00

CPC分类号： F01B3/0032

摘要： Axial piston fluid translating units commonly experience undesirable shaft deflections and barrel tilting during operation. A fluid translating unit includes a barrel plate interposed the end of a barrel and a porting surface defined within a housing thereof. The barrel plate is axially spaced from an end of the barrel and is in face sealing engagement with the porting surface. The barrel plate defines a plurality of fluid ports, each communicating between one of a plurality of barrel cylinder bores and the porting surface. In one aspect a plurality of counterbores are provided in the barrel in surrounding relation to the fluid ports. A plurality of seal rings having a sealing end defining an annular seal face of a predetermined width for face sealing engagement with the barrel plate. The seal rings are each disposed in one of the counterbores in circumferential sealing relation of a predetermined length which is no greater than the width of the sealing face. A plurality of annular springs are disposed in the counterbores for urging the seal rings into sealing engagement with the other of the barrel and the barrel plate. This arrangement permits tilting of the barrel without damaging contact or excessive leakage between the barrel plate and the porting surface.

摘要翻译： 轴向活塞流体平移单元通常在操作期间经历不期望的轴偏转和筒倾斜。 流体转换单元包括插入桶的端部的筒板和限定在其壳体内的移动表面。 筒板与筒的端部轴向间隔开并且与端口表面密封接合。 桶板限定了多个流体端口，每个流体端口在多个桶形缸孔中的一个和移动表面之间连通。 在一个方面，多个沉孔围绕流体端口设置在筒中。 多个密封环具有密封端，该密封端限定具有预定宽度的环形密封面，用于与筒板的表面密封接合。 密封环分别以不大于密封面的宽度的预定长度的周向密封关系设置在一个沉孔中。 多个环形弹簧设置在沉孔中，用于推动密封环与桶和桶板中的另一个密封接合。 这种布置允许筒的倾斜而不会在筒板和移动表面之间的接触不良或过度的泄漏。

公开(公告)号：US5265331A

公开(公告)日：1993-11-30

申请号：US822003

申请日：1992-01-16

申请人： William K. Engel ,  Guy C. Carlson, Jr. ,  Howard Savage ,  David P. Smith ,  Phillip J. Wenger

发明人： William K. Engel ,  Guy C. Carlson, Jr. ,  Howard Savage ,  David P. Smith ,  Phillip J. Wenger

IPC分类号： B23P15/10 ,  F03C1/06 ,  F04B1/12 ,  F04B53/14 ,  F16J1/00 ,  B23P15/00 ,  F01B31/00

CPC分类号： F04B1/124 ,  B23P15/10 ,  F05C2253/12 ,  Y10T29/49249 ,  Y10T29/49256

摘要： Hydraulic piston pumps and motors are used in various applications to power implements, steering, propel, and auxiliary systems. However, it is important to keep the piston weight and compressible fluid volume low in order to have a smaller more efficient pump. The subject piston is manufactured in a simple manner to achieve a reliable, light weight design. The piston has a cylindrical body having an outer surface. The piston is manufactured by forming a first bore having a large diameter in the body extending from the outer surface and terminating at an annular shoulder. A second bore is formed which extends from the annular shoulder to a predetermined depth. A tube is inserted through the bore and extends a predetermined distance into the second bore. A cap has a bore and is positioned on the body in abutment with at least a portion of the outer surface. The cap slidably receives the tube through the bore. The cap is brazed to the body and the tube is brazed to the cap and to the body to form an isolated annular cavity in the piston.

摘要翻译： 液压活塞泵和电机用于各种应用中，用于电动工具，转向，推进和辅助系统。 然而，重要的是将活塞重量和可压缩流体体积保持在较低水平，以便具有更小效率的泵。 主体活塞以简单的方式制造，以实现可靠，重量轻的设计。 活塞具有具有外表面的圆柱体。 活塞通过在主体中形成具有大直径的第一孔而从外表面延伸并终止于环形肩部。 形成从环形肩部延伸到预定深度的第二孔。 管穿过孔插入并延伸预定距离进入第二孔。 盖具有孔并且定位在与外表面的至少一部分邻接的主体上。 盖可滑动地接收通过孔的管。 盖被钎焊到主体上，并且管被钎焊到盖子和主体上，以在活塞中形成隔离的环形空腔。

公开(公告)号：US5724733A

公开(公告)日：1998-03-10

申请号：US694345

申请日：1996-08-08

申请人： William K. Engel ,  Michael H. Hinrichsen ,  Howard Savage ,  Donald H. Sherman ,  Kenneth R. Watts

发明人： William K. Engel ,  Michael H. Hinrichsen ,  Howard Savage ,  Donald H. Sherman ,  Kenneth R. Watts

IPC分类号： F04B39/00 ,  B23P15/10 ,  F04B1/12 ,  F16J1/22 ,  B23P11/00

CPC分类号： F04B1/124 ,  B23P15/10 ,  F05B2230/41 ,  F05C2253/12 ,  Y10T29/49236 ,  Y10T29/49256

摘要： A method is provided for producing a piston assembly adapted for use in a hydraulic pump or motor and having an overall length shorter than previously known piston assemblies while maintaining a strong mechanical connection and a high, efficient volumetric output. The method includes the steps of forming a slipper with a spherical ball on one end; forming a piston having a body portion and a connecting portion, the connecting portion having a spherical bottom surface, a groove spaced from the bottom surface and a contoured portion having an angled outer surface and an inner surface; inserting the spherical ball into the cavity; forcing the contoured portion inwardly to place the inner surface into contact with the spherical ball and to substantially longitudinally align the outer surface of the piston body with the angled surface of the contoured portion; heat treating the piston to a predetermined hardness and depth; and finishing the total longitudinal length of the piston to a finished size.

摘要翻译： 提供一种用于生产适用于液压泵或马达的活塞组件的方法，其整体长度比先前已知的活塞组件短，同时保持强的机械连接和高效率的体积输出。 该方法包括在一端形成具有球形球的拖鞋的步骤; 形成具有主体部分和连接部分的活塞，所述连接部分具有球形底表面，与所述底表面间隔开的凹槽和具有成角度的外表面和内表面的轮廓部分; 将球形球插入腔体; 迫使轮廓部分向内以将内表面与球形球接触并且基本上将活塞体的外表面与成形部分的成角度的表面大致纵向对准; 将活塞热处理至预定的硬度和深度; 并将活塞的总纵向长度整理成成品尺寸。

公开(公告)号：US5392693A

公开(公告)日：1995-02-28

申请号：US204831

申请日：1994-03-02

申请人： William K. Engel ,  James C. Goade ,  Michael H. Haselkorn ,  Donald H. Sherman

发明人： William K. Engel ,  James C. Goade ,  Michael H. Haselkorn ,  Donald H. Sherman

IPC分类号： F04B1/12 ,  F16J9/00

CPC分类号： F04B1/124 ,  F04B1/126 ,  F05B2250/34 ,  F05C2201/0478 ,  F05C2253/12 ,  Y10T403/32181 ,  Y10T403/32196 ,  Y10T403/32696 ,  Y10T403/35 ,  Y10T403/74

摘要： Piston assemblies for use in fluid translating devices normally are made of hardened metal alloy materials which require very smooth surface and are always subject to varying degrees of thermal expansion when being operated at high operating temperatures. In the subject arrangement, a piston assembly is provided and is constructed of most, if not all, ceramic components. The piston assembly includes a ceramic piston having a spherical head portion at one end thereof which rests in a spherical cavity of a ceramic slipper and held therein by a cylindrical ring. The cylindrical ring can be of a one-piece or a two-piece design which is in contact with the spherical head portion and bonded to the ceramic slipper, thus, retaining the spherical head portion. The cylindrical ring could also be made of a metallic material. The metallic ring is bonded to the ceramic slipper and subsequently swaged to hold the spherical head portion within the spherical cavity. The subject ceramic piston assembly provides a very smooth surface which reduces sliding friction and likewise the effects of thermal expansion and inertia are minimized by the use of a ceramic material. Consequently, the subject piston assembly is very efficient when operating at high temperatures and, likewise, is easy to manufacture and assemble.

摘要翻译： 用于流体转换装置的活塞组件通常由需要非常光滑表面的硬化金属合金材料制成，并且在高操作温度下操作时总是经受不同程度的热膨胀。 在主题布置中，提供活塞组件并且由大多数（如果不是全部）陶瓷部件构成。 活塞组件包括陶瓷活塞，其陶瓷活塞的一端具有球形头部，该球形头部位于陶瓷拖鞋的球形腔中，并由圆柱形环保持在其中。 圆柱形环可以是与球形头部接触并结合到陶瓷拖鞋上的一体式或两件式设计，因此保持球形头部。 圆柱形环也可以由金属材料制成。 金属环结合到陶瓷拖鞋上，随后模锻以将球形头部保持在球形腔内。 主体陶瓷活塞组件提供了非常光滑的表面，其减少了滑动摩擦，并且同样通过使用陶瓷材料来最小化热膨胀和惯性的影响。 因此，当在高温下操作时，主体活塞组件非常有效，并且同样易于制造和组装。

公开(公告)号：US5490446A

公开(公告)日：1996-02-13

申请号：US215430

申请日：1994-03-22

申请人： William K. Engel

发明人： William K. Engel

IPC分类号： F04B1/12 ,  F01B31/10

CPC分类号： F04B1/124 ,  F05C2253/12 ,  Y10T29/49261 ,  Y10T29/49263 ,  Y10T403/32778

摘要： An apparatus and method is provided for producing a piston assembly for use in a fluid translating device such as a hydraulic pump or motor. In the subject arrangement, a piston is provided having a cavity at one end thereof and a slipper having a spherical head portion which is precisely positioned within the cavity to provide a space therearound and subsequent thereto a plastic material is formed in the space to maintain the spherical head portion in the cavity. This arrangement eliminates the sliding friction that exists in other piston assemblies and furthermore reduces the precise sizing of the cavity relative to the spherical head portion.

摘要翻译： 提供了一种用于制造用于诸如液压泵或马达的流体平移装置中的活塞组件的装置和方法。 在主题布置中，提供活塞，其一端具有空腔，滑块具有球形头部，该球形头部精确地定位在空腔内，以在其周围提供空间，随后在该空间中形成塑料材料，以保持 空腔中的球形头部。 这种布置消除了存在于其它活塞组件中的滑动摩擦，并且进一步降低了空腔相对于球形头部的精确尺寸。

公开(公告)号：US4265165A

公开(公告)日：1981-05-05

申请号：US90153

申请日：1979-08-27

申请人： William K. Engel ,  Dean E. Miller

发明人： William K. Engel ,  Dean E. Miller

IPC分类号： F03C1/24 ,  F03C1/247 ,  F03C1/30 ,  F04B1/04 ,  F04B1/10 ,  F04B1/107 ,  F04B1/113 ,  F01B13/06

CPC分类号： F04B1/0443

摘要： In a pump or fluid motor (11, 11a, 11b) having a closed chamber (57) in which cylinders (38) orbit and reciprocate, leakage and cooling fluid which accumulates in the chamber (57) is formed into a rotating annular volume by centrifugal effects and exhibits a higher pressure in the region where the cylinders (38) move radially inward and closer together than in the opposite region where the cylinders (38) move outward and further apart. Power wastage from drag torque, turbulence and heat generation is reduced by scavenging the accumulated fluid from the chamber (57). Internal recirculation of the scavenged fluid from the high pressure portion of the annular rotating volume back to the low pressure portion is avoided by communicating the drain passages (68, 68a, 68b) with only a limited relatively high pressure sector of the rotating volume of fluid.

摘要翻译： 在具有封闭室（57）的泵或流体马达（11,11a，11b）中，其中圆柱体（38）轨道往复运动，积聚在腔室（57）中的泄漏和冷却流体通过 离心效应并且在气缸（38）径向向内和更靠近的区域中比在气缸（38）向外移动并进一步分开的相对区域中显示更高的压力。 通过从室（57）中清除积聚的流体来减少来自拖曳扭矩，湍流和发热的功率浪费。 通过将排出通道（68,68a，68b）仅限于旋转体积流体的有限的相对较高的压力部分连通来避免清除流体从环形旋转体积的高压部分回到低压部分的内部再循环 。

公开(公告)号：US4147092A

公开(公告)日：1979-04-03

申请号：US773045

申请日：1977-02-28

申请人： William K. Engel ,  Robert C. Hansen

发明人： William K. Engel ,  Robert C. Hansen

IPC分类号： F03C1/24 ,  F01B1/06 ,  F03C1/247 ,  F03C1/36 ,  F04B1/04 ,  F04B1/047 ,  F04B1/053 ,  F04B1/113 ,  F01B13/04

CPC分类号： F04B1/113 ,  F04B1/0408 ,  F04B1/0456

摘要： A fluid device has an inlet and a pumping chamber which is positioned in spaced relation to the inlet. The chamber is rotatably movable relative to the inlet. Apparatus is provided for contacting the fluid at the inlet at a preselected angle sufficient for accelerating the fluid into the chamber.

摘要翻译： 流体装置具有入口和泵送室，其被定位成与入口间隔开。 腔室可相对于入口可旋转地移动。 提供了用于使入口处的流体以预定角度接触足以加速流体进入腔室的装置。

公开(公告)号：US4031975A

公开(公告)日：1977-06-28

申请号：US650832

申请日：1976-01-21

申请人： William K. Engel

发明人： William K. Engel

IPC分类号： B62D11/18 ,  B62D11/04

CPC分类号： B62D11/183

摘要： The invention is concerned with an improvement in a control system for a hydrostatic drive of a vehicle comprising a pair of hydrostatic pumps the output of each of which is adjustable by moving an arm attached to a servo valve controlling the displacement of said pumps, each pump powering a respective hydraulic motor which drives a respective ground engaging means of said vehicle. The improvement of the present invention mechanically controls the speed and steering functions of the system. It comprises a pair of adjusting means, one communicating with each of the pumps, each comprising a frame adjacent the pump, a first crank mounted centrally to the frame, a first end of the first crank drivingly linked to the arm; a second crank mounted centrally to the frame, a first end of the second crank drivingly linked to a second end of the first crank and a third crank mounted centrally to the frame, a first end of the third crank drivingly linked to the second end of the first crank and a second end of the third crank drivingly linked to steering linkage means. The improved arrangement further includes tying means drivingly mounted adjacent a second end of each of the second cranks linking movement thereof.

摘要翻译： 本发明涉及用于车辆的静液压驱动的控制系统的改进，其包括一对静液压泵，每个静液压泵的输出可通过移动连接到控制所述泵的排量的伺服阀的臂来调节，每个泵 为驱动所述车辆的相应地面接合装置的相应的液压马达供电。 本发明的改进是机械地控制系统的速度和转向功能。 它包括一对调节装置，一个与每个泵连通的调节装置，每个包括邻近泵的框架，第一曲柄安装在框架的中心，第一曲柄的第一端驱动地连接到臂上; 安装在所述框架中心的第二曲柄，所述第二曲柄的第一端驱动地连接到所述第一曲柄的第二端，以及安装在所述框架中心的第三曲柄，所述第三曲柄的第一端驱动地连接到所述第二曲柄的第二端 第一曲柄和第三曲柄的第二端驱动地连接到转向联动装置。 改进的布置还包括相邻于连接其运动的第二曲柄中的每一个的第二端驱动地安装的捆扎装置。

公开(公告)号：US5214994A

公开(公告)日：1993-06-01

申请号：US821421

申请日：1992-01-15

申请人： William K. Engel

发明人： William K. Engel

IPC分类号： F01B13/04

CPC分类号： F01B13/04 ,  Y10S277/907

摘要： The design and construction of seals located between a cylinder barrel and a barrel plate rotatable therewith for axial piston fluid translating units have caused an increase in overall unit size, increased stiffness between the barrel and barrel plate and an increase in manufacturing cost and complexity. The present invention overcomes these problems by providing an axially compact, combined circumferential and axial face seal means. The seal means includes an annular seal ring having a sealing end and a biasing end with the sealing end defining an annular seal face of a predetermined width. A biasing means is attached to the biasing end of the seal ring and includes a spring ring having a generally flat base plate with a plurality of resilient fingers angularly extending therefrom. The axially compact structure of the seal means of this invention provides the required flexibility between the barrel and barrel plate while reducing overall unit size, and cost and complexity of manufacturing.

摘要翻译： 位于气缸筒和与其可旋转的筒板之间用于轴向活塞流体平移单元的密封件的设计和结构已经引起了总体单元尺寸的增加，筒体和筒体板之间增加的刚度以及制造成本和复杂性的增加。 本发明通过提供轴向紧凑的组合的圆周和轴向面密封装置克服了这些问题。 密封装置包括具有密封端和偏压端的环形密封环，密封端限定具有预定宽度的环形密封面。 偏置装置附接到密封环的偏压端，并且包括具有大致平坦的底板的弹簧环，弹性环具有从其角向延伸的多个弹性指状物。 本发明的密封装置的轴向紧凑结构在筒体和筒板之间提供了所需的灵活性，同时降低了整体单元尺寸，以及制造的成本和复杂性。

公开(公告)号：US5251536A

公开(公告)日：1993-10-12

申请号：US821101

申请日：1992-01-15

申请人： William K. Engel

发明人： William K. Engel

IPC分类号： F04B1/20 ,  F04B1/32 ,  F04B1/26

CPC分类号： F04B1/324

摘要： Variable displacement axial piston pumps are useful in outputting pressurized fluid to operate fluid actuators. The currently available center pivoted variable displacement axial piston pumps waste energy by compressing trapped volumes of oil during operation. The present variable displacement axial piston pump has first and second opposite sides of a swash plate pivotally connected to a pump housing by a pair of off-center pivots with the angle of the swash plate being controlled by first and second actuators connected to the opposite sides of the swash plate. Each of the off-center pivots includes a pair of pivot pins connected to the housing and releasably pivotally seated in a pair of semi-cylindrical pockets formed in the opposite sides of the swash plate. The first actuator at the first side of the swash plate holds the semi-cylindrical pocket seated against the pivot pin while the second actuator controls pivotal movement of the swash plate about the first off-center pivot. The off-center pivots are preferably located such that the trapped volume of oil is minimized and remains substantially constant between the minimum and maximum displacement settings of the swash plate.

摘要翻译： 可变排量轴向柱塞泵可用于输出加压流体以操作流体致动器。 目前可用的中心枢轴可变排量轴向柱塞泵在运行期间通过压缩被捕获的体积的油而浪费能量。 本发明的可变排量轴向柱塞泵具有通过一对偏心枢轴枢转地连接到泵壳体的斜盘的第一和第二相对侧，斜盘的角度由连接到相对侧的第一和第二致动器控制 的斜盘。 每个偏心枢轴包括一对枢轴销，连接到壳体并可释放地枢转地安置在形成在斜盘的相对侧中的一对半圆柱形凹穴中。 旋转斜盘第一侧的第一个执行机构将半圆柱形凹槽保持靠在枢轴销上，而第二个执行器控制旋转斜盘围绕第一偏心枢轴枢转运动。 偏心枢轴优选地定位成使得被捕获的油体积最小化并且在旋转斜盘的最小和最大位移设置之间保持基本恒定。