公开(公告)号：US06244981B1

公开(公告)日：2001-06-12

申请号：US09379489

申请日：1999-08-23

Applicant: Roger T. Simpson

Inventor： Roger T. Simpson

IPC: F16H708

CPC classification number: F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0859 ,  F16H2007/0878

Abstract: A hydraulic tensioner having a pawl-style rack member. The rack member is located in a groove in a bore in the tensioner housing. The tensioner piston has grooves along its exterior surface that correspond to the wedges or grooves in the pawl rack member and prevent the piston from being pushed inward. The pawl rack member may be a pair of pawls located in the tensioner bore. A flexible tab on the upper portion of the rack member contacts a groove on the upper portion of the piston to retain the piston in place for shipping.

Abstract translation: 一种具有棘爪式齿条构件的液压张紧器。 齿条构件位于张紧器壳体中的孔中的凹槽中。 张紧器活塞沿其外表面具有对应于棘爪齿条构件中的楔形或凹槽的凹槽，并且防止活塞向内推。 棘爪齿条构件可以是位于张紧器孔中的一对棘爪。 在齿条构件的上部上的柔性突片接触活塞上部的凹槽，以将活塞保持在适当位置以便运输。

公开(公告)号：US06196939B1

公开(公告)日：2001-03-06

申请号：US09322694

申请日：1999-05-28

Applicant: Roger T. Simpson

Inventor： Roger T. Simpson

IPC: F16H722

CPC classification number: F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0853 ,  F16H2007/0859

Abstract: A hydraulic tensioner having a hydraulically actuated rack member. A pair of check valves permit fluid to flow from an external source of pressurized fluid into a fluid chamber. The two check valves form a substantially fluid tight chamber in order to provide sufficient pressure to prevent the piston from retracting upon deenergization of the source of pressurized fluid.

Abstract translation: 具有液压致动的齿条构件的液压张紧器。 一对止回阀允许流体从外部加压流体源流入流体室。 两个止回阀形成基本上流体密封的腔室，以提供足够的压力以防止活塞在加压流体源的断电时回缩。

公开(公告)号：US6120402A

公开(公告)日：2000-09-19

申请号：US231783

申请日：1999-01-15

Applicant: Todd K. Preston ,  Roger T. Simpson

Inventor： Todd K. Preston ,  Roger T. Simpson

IPC: F02B67/06 ,  F16H7/08 ,  F16H7/22

CPC classification number: F16H7/08 ,  F16H2007/0853 ,  F16H2007/0859 ,  F16H2007/088

Abstract: A hydraulic tensioner having an external rack member. The rack member has an extending member at its upper end that contacts wedges or grooves along the exterior of the piston to limit backdrive or backlash of the piston. The rack member has an end member at its lower end that is located in a groove in the tensioner housing. The rack member has a plurality of portions that are held together by a garter spring to form a single cylindrical piece.

Abstract translation: 具有外部齿条构件的液压张紧器。 齿条构件在其上端具有延伸构件，其沿着活塞的外部接触楔形物或凹槽以限制活塞的反向传动或间隙。 齿条构件在其下端具有位于张紧器壳体中的凹槽中的端部构件。 齿条构件具有多个部分，这些部分通过卡箍弹簧保持在一起以形成单个圆柱形件。

公开(公告)号：US06117033A

公开(公告)日：2000-09-12

申请号：US324157

申请日：1999-06-02

Applicant: Roger T. Simpson

Inventor： Roger T. Simpson

IPC: F02B67/06 ,  F16H7/08

CPC classification number: F16H7/0829 ,  F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0859 ,  F16H7/0836

Abstract: A hydraulic tensioner includes a cylindrical center member or mass to counteract the resonance of the piston. The center member is located between a pair of piston springs inside the fluid chamber. The mass of the center member is selected, along with the spring rates of the piston springs, so that the resonant frequency of the center member matches the resonant frequency of the piston and timing drive. Since the center member moves in the opposite direction from the piston, the center member counteracts or damps the movement of the piston at resonant frequencies.

Abstract translation: 液压张紧器包括用于抵消活塞共振的圆柱形中心构件或物料。 中心构件位于流体室内的一对活塞弹簧之间。 选择中心构件的质量以及活塞弹簧的弹簧刚度，使得中心构件的谐振频率与活塞和定时驱动器的谐振频率相匹配。 由于中心构件沿与活塞相反的方向移动，所以中心构件抵消或阻碍活塞在共振频率处的运动。

公开(公告)号：US5951423A

公开(公告)日：1999-09-14

申请号：US947060

申请日：1997-10-08

Applicant: Roger T. Simpson

Inventor： Roger T. Simpson

IPC: F01L1/02 ,  F16F7/08 ,  F16H7/08 ,  F16H7/12 ,  F16H7/22

CPC classification number: F16F7/08 ,  F01L1/02 ,  F01L1/022 ,  F01L1/024 ,  F16H7/0831 ,  F16H7/0834 ,  F16H2007/0806 ,  F16H2007/084 ,  F16H2007/0859 ,  F16H2007/0874 ,  F16H2007/0891

Abstract: A mechanical friction tensioner for power transmission chains, such as engine timing chains. The tensioner provides the advantages of a conventional hydraulic tensioner, but eliminates the hydraulic pressure system by use of spring loaded wedge-shaped blocks and friction damping. The mechanical tensioner has a wedge-shaped plunger positioned within a bore in the tensioner housing. The plunger is biased outward by two spring loaded wedge-shaped blocks and a return spring. As the plunger moves inward, the wedge-shaped blocks are pushed in towards the plunger by the springs to provide friction damping.

Abstract translation: 用于动力传动链的机械摩擦张紧器，例如发动机正时链。 张紧器提供了常规液压张紧器的优点，但是通过使用弹簧加载的楔形块和摩擦阻尼来消除液压系统。 机械张紧器具有位于张紧器壳体中的孔内的楔形柱塞。 柱塞被两个弹簧加载的楔形块和复位弹簧向外偏压。 当柱塞向内移动时，楔形块通过弹簧被推入柱塞以提供摩擦阻尼。

公开(公告)号：US5707309A

公开(公告)日：1998-01-13

申请号：US788039

申请日：1997-01-23

Applicant: Roger T. Simpson

Inventor： Roger T. Simpson

IPC: F16H7/08

CPC classification number: F16H7/08 ,  F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0814 ,  F16H2007/0859 ,  F16H2007/0891

Abstract: A hydraulic tensioner for a wrapped power transmission device designed to minimize the amount of air present in the pressure chamber. The hydraulic tensioner includes a combination pressure relief-check valve for use with a hollow piston pressure chamber containing a spring within the pressure chamber to bias the piston outward from the bore. The valve housing is designed to reduce the volume of fluid contained within the pressure chamber minimizing the amount of air which may become trapped in the pressure chamber thus improving the performance of the tensioner.

Abstract translation: 用于包裹的动力传动装置的液压张紧器，设计成使存在于压力室中的空气量最小化。 液压张紧器包括组合的压力释放 - 止回阀，用于在压力室内容纳弹簧的空心活塞压力室，以将活塞从孔向外偏压。 阀壳体被设计成减少压力室内容纳的流体的体积，从而最小化可能被捕获在压力室中的空气量，从而改善张紧器的性能。

公开(公告)号：US5700216A

公开(公告)日：1997-12-23

申请号：US760834

申请日：1996-12-05

Applicant: Roger T. Simpson ,  Philip J. Mott

Inventor： Roger T. Simpson ,  Philip J. Mott

IPC: F16H7/08

CPC classification number: F16H7/08 ,  F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0859 ,  F16H2007/0872 ,  F16H2007/0874 ,  F16H2007/0891

Abstract: A hydraulic tensioner for operation of a dual chain system including at least one piston maintaining force on two chain guide arms. One embodiment includes an inner and outer piston with a first spring within the bore and a second spring on top of the housing, where each piston contacts a chain guide arm. A second embodiment includes one piston with a fulcrum arm contacting the chain guide arms. A third embodiment includes two pistons arranged side-by-side sharing the same chamber and check valve assembly.

Abstract translation: 一种用于操作双链系统的液压张紧器，包括在两个链条导向臂上保持力的至少一个活塞。 一个实施例包括内孔和外活塞，其内孔具有第一弹簧，第二弹簧位于壳体的顶部，其中每个活塞接触链导向臂。 第二实施例包括一个具有支点臂的活塞，该支点臂与链条导向臂接触。 第三实施例包括并排布置的两个共同相同的腔室和止回阀组件的活塞。

公开(公告)号：US5700213A

公开(公告)日：1997-12-23

申请号：US516919

申请日：1995-08-18

Applicant: Roger T. Simpson ,  Kevin B. Todd

Inventor： Roger T. Simpson ,  Kevin B. Todd

IPC: F02B67/06 ,  F16H7/08 ,  F16K15/04

CPC classification number: F16H7/0848 ,  F16H2007/0806 ,  F16H2007/0814 ,  F16H2007/0859 ,  F16H2007/0887 ,  F16H2007/0891 ,  F16H7/0829

Abstract: A hydraulic tensioner is provided with a plunger slidably fitted in a cavity in the tensioner housing and biased in a protruding direction by a spring and fluid. An integral inlet check and pressure relief valve is positioned in the cavity and permits fluid to only flow into the cavity and thereby protrude the plunger but not out of the cavity until a high pressure condition is reached whereupon fluid is relieved out of the cavity back to the fluid source. The integral inlet check and pressure relief valve includes a check spring biasing a valve member a against a pressure relief disk that is biased against the valve member by a pressure relief spring.

Abstract translation: 液压张紧器设置有柱塞，其可滑动地装配在张紧器壳体中的空腔中并且通过弹簧和流体沿突出方向偏置。 整体入口止回阀和压力释放阀定位在空腔中，并且允许流体仅流入空腔中，从而突出柱塞但不突出空腔，直到达到高压条件，然后将流体从空腔中释放回到 流体源。 整体式入口止回阀和减压阀包括一个止回弹簧，该止回弹簧将阀构件a抵靠压力释放盘偏置，该压力释放盘通过压力释放弹簧而偏置在阀构件上。

公开(公告)号：US07497297B2

公开(公告)日：2009-03-03

申请号：US10632352

申请日：2003-08-01

Applicant: Will Watson ,  Alan L. Miller ,  Drew A. Sundquist ,  Roger T. Simpson ,  Dan J. Showalter

Inventor： Will Watson ,  Alan L. Miller ,  Drew A. Sundquist ,  Roger T. Simpson ,  Dan J. Showalter

IPC: B60K17/344

CPC classification number: F16D27/115 ,  B60K17/342 ,  B60K17/344 ,  B60K17/3467 ,  B60K17/35 ,  B60K17/3505 ,  B60K17/3515 ,  B60K23/08 ,  B60K23/0808 ,  B60K28/165 ,  B60W2510/0241 ,  B60W2520/28 ,  F16D27/004 ,  F16H63/18 ,  F16H63/304

Abstract: An on demand vehicle drive system monitors vehicle performance and operating conditions and controls torque delivery to the vehicle wheels. The system includes a plurality of speed and position sensors, a transfer case having primary and secondary output shafts driving primary and secondary axles and a microcontroller. The sensors include a vehicle speed sensor, a pair of primary and secondary drive shaft speed sensors, and brake and driveline status sensors.The transfer case includes a modulating electromagnetic clutch controlled by the microcontroller which is incrementally engaged to transfer torque from the primary output shaft to the secondary output shaft. When the speed of either the front or the rear drive shafts overruns, i.e., exceeds, the speed of the other drive shaft by a predetermined value related to the vehicle speed, indicating that wheel slip is present, clutch current is incrementally increased to increase clutch engagement and torque transfer to the secondary axle. When wheel slip is reduced below the predetermined value the current to the clutch is incrementally reduced. The method of operating such a system is also described.

Abstract translation: 按需车辆驱动系统监视车辆性能和操作条件并控制向车轮传递的扭矩。 该系统包括多个速度和位置传感器，具有驱动主轴和次轴的主输出轴和次输出轴的转移壳和微控制器。 传感器包括车速传感器，一对主驱动轴速度传感器以及制动和传动系状态传感器。 传送箱包括由微控制器控制的调制电磁离合器，其被递增地接合以将扭矩从主输出轴传递到次输出轴。 当前驱动轴或后驱动轴超速的速度即超过另一驱动轴的速度与车速相关的预定值，表示车轮滑动时，离合器电流逐渐增加以增加离合器 接合和扭矩传递到次轴。 当车轮滑移减小到预定值以下时，逐渐减小到离合器的电流。 还描述了操作这种系统的方法。

公开(公告)号：US20080149058A1

公开(公告)日：2008-06-26

申请号：US11911853

申请日：2006-06-26

Applicant: Roger T. Simpson ,  Philip J. Mott

Inventor： Roger T. Simpson ,  Philip J. Mott

IPC: F01L1/34

CPC classification number: F01L13/0031 ,  F01L1/143 ,  F01L1/34 ,  F01L1/3442 ,  F01L13/0042 ,  F01L13/0063 ,  F01L2001/34426 ,  F01L2820/033

Abstract: A variable valve timing system includes a toothed rotating sleeve, a rack, and an actuator. The rack has a first end, a second end with a plurality of teeth in meshing contact with the teeth of rotating sleeves of the valve and being linearly moveable to rotate the sleeves. The actuator includes a housing, a control valve, and at least one check valve. The housing slidably receives a piston coupled to the rack separating a chamber in the housing into first and second chambers. The control valve selectively directs fluid from the first to the second chamber or vice versa. When the rack is shifted linearly by vibrational impulses from the engine, the piston moves linearly within the housing, pressurizing the first or the second chamber and under control of the control valve, fluid recirculates from the first or the second chamber to the other chamber.

Abstract translation: 可变气门正时系统包括齿形旋转套筒，齿条和致动器。 齿条具有第一端，第二端具有与阀的旋转套筒的齿啮合的多个齿，并且可线性移动以使套筒旋转。 致动器包括壳体，控制阀和至少一个止回阀。 壳体可滑动地接收连接到齿条的活塞，该壳体将壳体中的腔室分成第一和第二腔室。 控制阀选择性地将流体从第一室引导到第二室，反之亦然。 当机架通过来自发动机的振动脉冲线性地移动时，活塞在壳体内线性移动，对第一或第二腔室加压并且在控制阀的控制下，流体从第一腔室或第二腔室再循环到另一腔室。