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公开(公告)号：US4936143A
公开(公告)日：1990-06-26
申请号：US345377
申请日：1989-04-28
IPC分类号： G01D5/243
CPC分类号： G01D5/243
摘要： A cavity such as a chamber (10) of a hydraulic cylinder (2) containing a movable piston (4) is equipped with transducers (12) for transmitting alternating pressure signals into a fluid in the chamber and for receiving signals from it. The fluid chamber acts as a resonant tank circuit for determining the frequency of an external electronic oscillator (24). The frequency of oscillation of the circuit indicates the depth of the cavity, i.e., the position of the piston in the cylinder. Multiple modes of oscillation are employed (34, 36) in the same chamber to provide high accuracy and resolution of ambiguities. In one embodiment chambers (10', 66) on both sides of the piston (4') of a double-acting cylinder (2') are measured, and the readings are combined (76) to reduce errors that would otherwise result from changes in temperature, pressure, viscosity and other parameters unrelated to the position of the piston.
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公开(公告)号：US4776419A
公开(公告)日：1988-10-11
申请号：US138786
申请日：1987-12-28
申请人： Erlen B. Walton
发明人： Erlen B. Walton
CPC分类号： B62D7/1563
摘要： A closed hydraulic system (22) is provided for transmitting steering movement to servo valve (24) of a rear wheel power steering assembly (26) in response to a steering movement of a front wheel steering assembly (14). The front wheel steering assembly is controlled by a steering wheel (18) and a power steering assembly (20). The closed hydraulic system (22) includes a pump assembly (50) and an actuator assembly (96) connected together by conduits (54,56) to define closed fluid flow branches or fluid links (112,114) for moving a piston (98) in the actuator assembly in response to movement of a piston (78) the pump assembly. Movement of the actuator piston is transmitted to a valving member (106) of the servo valve via a cam assembly (104) which moves the valving member (106) to effect same direction rear wheel steering for rather small front wheel steering angles and to effect opposite direction rear wheel steering for greater front wheel steering angles. System (22) may include a reservoir assembly (66) including a piston assembly (124) for maintaining a constant positive pressure in both branches, a dash pot (124) for preventing sudden steering angle charges of the rear wheels in the event of rapid fluid loss in either branch, and check valve assemblies (134) for limiting the maximum pressure differential between the branches.
摘要翻译： 提供一个闭合的液压系统（22），用于响应于前轮转向组件（14）的转向运动，将转向运动传递到后轮动力转向组件（26）的伺服阀（24）。 前轮转向组件由方向盘（18）和动力转向组件（20）控制。 封闭的液压系统（22）包括通过管道（54,56）连接在一起的泵组件（50）和致动器组件（96），以限定用于将活塞（98）移动到其中的闭合的流体流动分支或流体连杆（112,114） 所述致动器组件响应于所述泵组件的活塞（78）的移动。 致动器活塞的移动通过凸轮组件（104）传递到伺服阀的阀构件（106），凸轮组件（104）使阀构件（106）移动以对相对小的前轮转向角进行相同方向的后轮转向，并且实现 相反方向后轮转向更大的前轮转向角。 系统（22）可以包括储存器组件（66），其包括用于在两个分支中保持恒定的正压力的活塞组件（124），用于在快速发生时防止后轮的突然转向角的电荷 任何分支中的流体损失和用于限制分支之间的最大压力差的止回阀组件（134）。
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公开(公告)号：US6102178A
公开(公告)日：2000-08-15
申请号：US109354
申请日：1998-07-02
申请人： Erlen B. Walton
发明人： Erlen B. Walton
IPC分类号： B60K17/35 , B60K23/08 , F16D35/00 , F16D43/284 , F16H48/22
CPC分类号： F16D35/00 , B60K17/351 , B60K23/0808 , F16D35/005 , F16D43/284 , F16H48/12 , Y10T74/19005
摘要： A center differential device (17) for use in a four wheel drive system, the device including a viscous coupling (29), a ball ramp actuator (31), and a clutch pack (33). Under normal driving conditions, most of the torque is transmitted to the front drive wheels (11), and the device (17) rotates as a unit. If the front wheels (11) begin to slip, the input shaft (15) and input coupling member (35) rotate faster than the output coupling member (43), thus transmitting torque to the output coupling member (43). This torque is transmitted to the first ramp plate (51) of the ball ramp actuator (31), displacing the actuator from its neutral position (FIG. 3), such that the second ramp plate (52) begins to load the clutch pack (33) and transmit torque from the housing (25) to the output shaft (19), and from there to the rear drive wheels (23). With the present invention, for any given amount of front wheel slip, a predetermined amount of torque may be transmitted automatically to the rear drive wheels (23), the viscous coupling (29) providing a "speed sensitive" input to the ball ramp actuator (31), without the need for any separate controls, sensors, etc.
摘要翻译： 一种用于四轮驱动系统的中心差速装置（17），该装置包括粘性联轴器（29），滚珠坡道致动器（31）和离合器组件（33）。 在正常行驶条件下，大部分转矩传递到前驱动轮（11），装置（17）作为一个单元旋转。 如果前轮（11）开始滑动，则输入轴（15）和输入联接构件（35）比输出联接构件（43）旋转得更快，从而将扭矩传递到输出联接构件（43）。 该扭矩传递到滚珠坡道致动器（31）的第一斜坡板（51），使致动器从其中立位置（图3）移位，使得第二斜坡板（52）开始装载离合器组件 33），并且将扭矩从壳体（25）传递到输出轴（19），并且从那里传递到后驱动轮（23）。 利用本发明，对于任何给定量的前轮滑动，预定量的扭矩可以自动地传递到后驱动轮（23），粘性联轴器（29）为球坡道致动器提供“速度敏感”输入 （31），无需任何单独的控制，传感器等
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公开(公告)号：US5137300A
公开(公告)日：1992-08-11
申请号：US645922
申请日：1991-01-25
申请人： Erlen B. Walton
发明人： Erlen B. Walton
IPC分类号： B60G11/04 , B60G17/015 , B60G17/027
CPC分类号： B60G17/0157 , B60G11/04 , B60G17/0275 , B60G2202/11 , B60G2202/112 , B60G2400/106 , B60G2400/204 , B60G2400/34 , B60G2500/20 , B60G2600/26 , B60G2800/16 , B60G2800/18 , B60G2800/24
摘要： Selectively engagable auxiliary leaf springs (38) for vertically supporting a vehicle chassis (32) on an axle assembly (22) in parallel with main suspension springs (34). Forward and rear ends (38b, 38a) of the auxiliary leaf springs are pivotally attached to the vehicle chassis and the axle assembly, and pivotal movement of the forward ends (38b) is inhibited or prevented by engagement of actuator assemblies (56 or 100 or 170) to engage the auxiliary leaf springs. A control system automatically engages the actuator assemblies in response to load added to the vehicle and/ot vehicle steering movement and/or rapid vehicle acceleration.
摘要翻译： 用于与主悬架弹簧（34）平行地垂直地支撑在轴组件（22）上的车辆底盘（32）的选择性地可接合的辅助板簧（38）。 辅助板簧的前端和后端（38b，38a）枢转地附接到车辆底盘和车轴组件，并且通过致动器组件（56或100或 170）接合辅助板簧。 控制系统响应于加载到车辆的负载和/或车辆转向运动和/或快速车辆加速度而自动地接合致动器组件。
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公开(公告)号：US5098121A
公开(公告)日：1992-03-24
申请号：US702879
申请日：1991-06-24
IPC分类号： B60G11/04 , B60G11/36 , B60G17/015
CPC分类号： B60G11/36 , B60G11/04 , B60G17/0152 , B60G2202/11 , B60G2202/112 , B60G2202/12 , B60G2202/413 , B60G2202/422 , B60G2202/43 , B60G2204/82 , B60G2500/20 , B60G2600/26 , B60G2800/18 , B60G2800/22 , Y10S280/01
摘要： Selectively engagable auxiliary leaf springs (38) for vertically supporting a vehicle chassis (32) on an axle assembly (22 or 102) in parallel with main suspension springs (34 or 114). Forward and rear ends (38b,38a) of the auxiliary leaf springs are pivotally attached to the vehicle chassis and the axle assembly, and pivotal movement of the forward ends (38b) is inhibited or prevented by actuators (56) to engage the auxiliary leaf springs.
摘要翻译： 用于在与主悬浮弹簧（34或114）平行的轴组件（22或102）上垂直支撑车辆底盘（32）的选择性地可接合的辅助板簧（38）。 辅助板簧的前端和后端（38b，38a）枢转地连接到车辆底盘和车轴组件，并且通过致动器（56）阻止或防止前端（38b）的枢转运动以接合辅助叶片 弹簧
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公开(公告)号：US4830129A
公开(公告)日：1989-05-16
申请号：US138783
申请日：1987-12-28
申请人： Erlen B. Walton
发明人： Erlen B. Walton
IPC分类号： B62D7/15
CPC分类号： B62D7/1563
摘要： A closed hydraulic system (22) is provided for transmitting steering movement to a rear wheel steering assembly (16) in response to steering movement of a front wheel steering assembly (14). The front wheel steering assembly is controlled by a steering wheel (18) and a power steering assembly (20). The closed hydraulic system (22) includes a pump assembly (44) and an actuator assembly (46) connected together by conduits (48,50) to define closed fluid flow branches or fluid links (49,51) for moving a piston (94) in the actuator assembly in response to movement of a piston (72) in the pump assembly. Movement of the actuator piston is transmitted to the rear wheel steering assembly via a cam assembly (92) which effects same direction rear wheel steering for rather small front wheel steering angles and which effects opposite direction rear wheel steering for greater front wheel steering angles. System (22) may include a reservoir assembly (60) including a piston assembly (116) for maintaining a constant positive pressure in both branches, a dash pot (124) for preventing sudden steering angle charges of the rear wheels in the event of rapid fluid loss in either branch, and relief valve assemblies (126) for limiting the maximum pressure differential between the branches.
摘要翻译： 提供一个闭合的液压系统（22），用于响应于前轮转向组件（14）的转向运动而将转向运动传递到后轮转向组件（16）。 前轮转向组件由方向盘（18）和动力转向组件（20）控制。 封闭的液压系统（22）包括泵组件（44）和通过管道（48,50）连接在一起的致动器组件（46），以限定用于移动活塞（94）的闭合的流体流动分支或流体连杆（49,51） ）响应于泵组件中的活塞（72）的运动而在致动器组件中。 致动器活塞的移动通过凸轮组件（92）传递到后轮转向组件，凸轮组件（92）对于相当小的前轮转向角执行相同的方向后轮转向，并且对于更大的前轮转向角而对后轮转向产生相反的方向。 系统（22）可以包括储存器组件（60），其包括用于在两个分支中保持恒定的正压的活塞组件（116），用于在快速的情况下防止后轮的突然的转向角电荷的仪表板（124） 任一分支中的流体损失和用于限制分支之间的最大压力差的安全阀组件（126）。
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公开(公告)号：US3943713A
公开(公告)日：1976-03-16
申请号：US526774
申请日：1974-11-25
申请人： Erlen B. Walton
发明人： Erlen B. Walton
IPC分类号： B66D1/44 , B66D1/40 , F16H61/4157 , F16H39/46 , F15B20/00
CPC分类号： B66D1/40 , F16H2063/3033 , F16H61/4157 , Y10S60/905
摘要： A hoist system employing a hydraulic motor, a variable displacement reversible flow hydraulic pump for supplying hydraulic fluid to the hydraulic motor, and an electric motor employed as a prime mover for the pump has a control arrangement effective for sensing various indicia of operation as, for example, rate of speed of lifting of an associated load, failure of the hoist system power train and the lifting of maximum loads. Within the overall control arrangement means are provided for comparing the actual rate of speed of lifting to the desired or requested rate of speed of lifting with the differential thereof being directed back to the associated mechanism for varying the output displacement of said hydraulic pump for thereby modifying such output displacement in order to achieve zero differential output. Means are also provided for automatically braking the hoist drum in order to prevent the load carried thereby from dropping in the event of a failure of the said power train. Means are also provided for varying the maximum speed of the hoist system with variations in load.
摘要翻译： 使用液压马达的升降机系统，用于向液压马达供应液压流体的可变排量可逆流量液压泵以及用作泵的原动机的电动机具有有效用于检测各种运行指示的控制装置，对于 例如，相关负载的提升速度，起重系统动力传动系的故障和最大负载的提升。 在总体控制装置中，提供了用于将提升速度的实际速率与期望速度或所要求的提升速度进行比较，其差速器被引导回相关联的机构，以改变所述液压泵的输出位移，从而改变 这样的输出位移为了实现零差分输出。 还提供了用于自动制动提升滚筒的装置，以便在所述动力传动系的故障的情况下防止由此携带的载荷下降。 还提供了用于随着负载变化来改变起重系统的最大速度的装置。
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18.发明授权
公开(公告)号：US5123672A
公开(公告)日：1992-06-23
申请号：US645780
申请日：1991-01-25
IPC分类号： B60G11/04 , B60G17/015 , B60G17/027
CPC分类号： B60G17/0157 , B60G11/04 , B60G17/0275 , B60G2202/11 , B60G2400/106 , B60G2400/204 , B60G2400/34 , B60G2500/20 , B60G2600/26 , B60G2800/16 , B60G2800/18 , B60G2800/24
摘要： Selectively engagable auxiliary leaf springs (38) for vertically supporting a vehicle chassis (32) on an axle assembly (22) in parallel with main suspension springs (34). Forward and rear ends (38b,38a) of the auxiliary leaf springs are pivotally attached to the vehicle chassis and the axle assembly, and pivotal movement of the forward ends (38b) is inhibited or prevented by engagement of actuator assemblies (56 or 100 or 170) to engage the axuiliary leaf springs. A control system automatically engages the actuator assemblies in response to load added to the vehicle and/or vehicle steering movement and/or rapid vehicle acceleration.
摘要翻译： 用于与主悬架弹簧（34）平行地垂直地支撑在轴组件（22）上的车辆底盘（32）的选择性地可接合的辅助板簧（38）。 辅助板簧的前端和后端（38b，38a）枢转地附接到车辆底盘和车轴组件，并且通过致动器组件（56或100或 170）接触斧头弹簧。 控制系统响应于加载到车辆的负载和/或车辆转向运动和/或快速车辆加速度而自动地接合致动器组件。
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公开(公告)号：US5029893A
公开(公告)日：1991-07-09
申请号：US457065
申请日：1989-12-26
IPC分类号： B60G11/04 , B60G11/36 , B60G17/015 , B60G17/027
CPC分类号： B60G11/36 , B60G11/04 , B60G17/0152 , B60G2202/11 , B60G2202/112 , B60G2202/12 , B60G2202/413 , B60G2202/422 , B60G2202/43 , B60G2204/82 , B60G2500/20 , B60G2600/26 , B60G2800/18 , B60G2800/22 , Y10S280/01
摘要： Selectively engagable auxiliary leaf springs (38) for vertically supporting a vehicle chassis (32) on an axle assembly (22 or 102) in parallel with main suspension springs (34 or 114). Forward and rear ends (38b,38a) of the auxiliary leaf springs are pivotally attached to the vehicle chassis and the axle assembly, and pivotal movement of the forward ends (38b) is inhibited or prevented by actuators (56) to engage the auxiliary leaf springs.
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公开(公告)号：US5024463A
公开(公告)日：1991-06-18
申请号：US456872
申请日：1989-12-26
IPC分类号： B60G17/02
CPC分类号： B60G17/023 , B60G2202/11 , B60G2202/112 , B60G2202/43 , B60G2500/20 , B60G2500/30
摘要： Selectively engagable auxiliary leaf springs (38 or 142) for vertically supporting a vehicle chassis (32) on an axle assembly (22 or 102) in parallel with main suspension springs (34 or 114). In three of the disclosed embodiments, both ends (38b,38a) of the auxiliary leaf springs (38) are pivotally attached. In two other embodiments, one end (142a) of each auxiliary leaf spring (142) is pivotally attached and the other end (142b) is rigidly affixed in cantilever fashion. A manually operated hand crank (60) or ratchet mechanism (87) employed to drive a speed reducer actuator (62) to selectively enable or increase load supporting of the auxiliary leaf springs.
摘要翻译： 用于与主悬架弹簧（34或114）平行地在轴组件（22或102）上垂直支撑车辆底盘（32）的选择性地可接合的辅助板簧（38或142）。 在所公开的实施例中的三个中，辅助板簧（38）的两端（38b，38a）枢转地连接。 在另外两个实施例中，每个辅助板簧（142）的一端（142a）枢转地连接，另一端（142b）以悬臂方式刚性地固定。 用于驱动减速器致动器（62）的手动手动曲柄（60）或棘轮机构（87）以选择性地实现或增加辅助板簧的负载支撑。
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