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公开(公告)号：US4663985A
公开(公告)日：1987-05-12
申请号：US837251
申请日：1986-03-07
CPC分类号： F16H37/0826 , F16D59/00 , Y10T74/19014
摘要： In order to avoid a large torque spike in a system in the event of a system failure, a shaft relative speed limiting system includes a lost motion device and a brake. The lost motion device is operatively associated with a pair of shafts normally driven at selected speeds such that one of the shafts drives the other of the shafts in the event of a system failure. The brake is operatively associated with the pair of shafts normally driven at selected speeds through first and second portions of a relative speed limiting device and limits the relative speed between the shafts in the event of a system failure. Additionally, the first portion of the relative speed limiting device is normally driven by one of the shafts at the selected speed thereof and the second portion of the relative speed limiting device is normally driven by the other of the shafts at the slected speed thereof in the shaft relative speed limiting system.
摘要翻译： 在系统故障的情况下，为了避免系统中的大的扭矩尖峰，轴相对速度限制系统包括空转装置和制动器。 空动装置与通常以选定速度驱动的一对轴可操作地相关联，使得一个轴在系统故障的情况下驱动另一个轴。 制动器与通常通过相对速度限制装置的第一和第二部分以选定速度驱动的一对轴可操作地相关联，并且在系统故障的情况下限制轴之间的相对速度。 此外，相对限速装置的第一部分通常以选定速度的一个轴驱动，并且相对限速装置的第二部分通常由另一个轴以其选定速度在 轴相对速度限制系统。
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公开(公告)号：US4641737A
公开(公告)日：1987-02-10
申请号：US804387
申请日：1985-12-04
CPC分类号： F16D59/00 , F16H25/2015 , G05G5/04
摘要： An overtravel stop for a rotating shaft has a pair of gears associated with the shaft to rotate therewith. Each gear engages an associated limiting gear and the two engaged gear pairs have different gear ratios. One of the limiting gears is threaded over a shaft which is secured for rotation with the other limiting gear, such that the different gear ratios causes the one limiting gear to translate over the shaft. At selected travel limits, the one limiting gear is caused to lock relative to the other, thereby causing one of the gears associated with the shaft to shift therearound. A cam structure is provided which axially shifts a stop member associated with the shaft into engagement with a fixed stop when the one gear shifts about the shaft. Two different cam structures are shown including a pin and slot connection between the stop member and the shaft, and an ear and cam recess connection between the stop member and one of the shaft gears.
摘要翻译： 用于旋转轴的超程停止件具有与轴相关联的一对齿轮以与其一起旋转。 每个齿轮啮合相关联的限位齿轮，两个啮合齿轮对具有不同的传动比。 其中一个极限齿轮被拧在轴上，该轴被固定成与另一个限位齿轮一起旋转，使得不同的齿轮比使一个限位齿轮在轴上平移。 在选择的行程限制下，使一个限位齿轮相对于另一个限制齿轮锁定，从而使与轴相关联的一个齿轮在其周围移动。 提供一种凸轮结构，当一个齿轮围绕轴移动时，凸轮结构将与轴相关联的止动构件轴向移动成与固定止动件接合。 示出了两个不同的凸轮结构，其包括止动构件和轴之间的销和槽连接，以及在止动构件和一个轴齿轮之间的耳朵和凸轮凹部连接。
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公开(公告)号：US4643290A
公开(公告)日：1987-02-17
申请号：US804388
申请日：1985-12-04
IPC分类号： F16D63/00 , F16D41/20 , F16D43/26 , F16D59/00 , F16D67/02 , F16H25/20 , F16H25/24 , F16D11/00
CPC分类号： F16H25/2015 , F16D41/206 , F16D43/26 , F16D59/00 , F16H25/2454 , F16H2025/2463
摘要： Rotational overtravel stops are often crucial components of actuators used in environments where not only cost but also power requirements, reliability, weight, size and simplicity are important. A bi-directional overtravel stop for a rotatable actuator shaft is disclosed which includes first and second brake plates secured for rotation with the shaft in opposite directions by a pair of oppositely disposed one-way clutches. A non-rotatable brake member is mounted for axial movement relative to the shaft and means are provided for biasing the brake member to frictionally engage one or the other of the brake plates when the shaft has reached the selected limit of its rotation in one direction or the other. The actuating structure of the overtravel stop includes a sleeve over the shaft and secured to the brake member, and a tubular threaded member over the sleeve, said threaded member and sleeve being secured against relative rotation and allowing telescoping relative to one another. Stops are provided so that, at either end of the telescoping motion, the sleeve is appropriately biased to move the brake member toward engagement with the appropriate brake plate. The threaded member is driven axially by a nut which is itself driven by the shaft. The one-way clutches are springs wound spirally around the shaft with one end of each spring being fixed to its associated brake plate.
摘要翻译： 旋转超程停车通常是在不仅成本而且功率要求，可靠性，重量，尺寸和简单性都很重要的环境中使用的执行器的关键部件。 公开了一种用于可旋转致动器轴的双向超程停止件，其包括通过一对相对设置的单向离合器而被固定成与轴以相反方向旋转的第一和第二制动板。 安装不可旋转的制动构件以相对于轴线运动，并且当轴已经在一个方向上达到其旋转的选定极限时，提供用于偏置制动构件摩擦地接合一个或另一个制动板的装置，或者 另一个。 超行程停止件的致动结构包括在轴上并固定到制动构件上的套筒，并且在套筒上方的管状螺纹构件，所述螺纹构件和套筒抵抗相对旋转固定，并允许相对于彼此伸缩。 设置止动件，使得在伸缩运动的任一端，套筒被适当地偏置以使制动构件移动以与适当的制动板接合。 螺纹构件由本身由轴驱动的螺母轴向驱动。 单向离合器是围绕轴螺旋缠绕的弹簧，每个弹簧的一端固定到其相关的制动板。
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公开(公告)号：US5290212A
公开(公告)日：1994-03-01
申请号：US754063
申请日：1991-09-03
申请人： Jeffrey D. Metcalf
发明人： Jeffrey D. Metcalf
IPC分类号： A63B21/008 , A63B23/035 , A63B23/04 , A63B22/12 , A63B69/16
CPC分类号： A63B22/0605 , A63B21/00069 , A63B21/0088 , A63B21/4049 , A63B22/001 , A63B22/0012 , A63B23/03575
摘要： An exercise cycle includes a frame having a front wheel assembly and handlebars. The front wheel assembly includes a fan wheel having side plates one of which has an intake port, and an intake assembly around the intake port, the intake assembly having openings which may be opened and closed. By opening and closing the intake openings, the resistance of the wheel to the air can be varied without changing the rotational rate of the wheel. The handlebars of the exercise cycle are pivotally connected to the cycle intermediate their ends. The lower ends of the handlebars are pivotally connected to a cam arm which is removably connected to the shaft to which the pedal is mounted. By connecting or disconnecting the cam arm to or from the pedal shaft, the handlebars can be selectively moved between a stationary mode and a mode in which the handlebars reciprocate between forward and backward positions.
摘要翻译： 锻炼周期包括具有前轮组件和把手的框架。 前轮组件包括具有侧板的风扇叶轮，其中一个具有进气口和围绕进气口的进气组件，进气组件具有可以打开和关闭的开口。 通过打开和关闭进气口，可以改变车轮对空气的阻力，而不改变车轮的转速。 运动周期的把手可枢转地连接到它们的末端之间的循环。 把手的下端枢转地连接到可拆卸地连接到安装踏板的轴的凸轮臂。 通过将凸轮臂与踏板轴连接或断开，可以在固定模式和把手在前进位置和后退位置之间往复运动的模式中选择性地移动手把。
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公开(公告)号：US4865269A
公开(公告)日：1989-09-12
申请号：US215814
申请日：1988-07-06
申请人： Jeffrey D. Metcalf
发明人： Jeffrey D. Metcalf
摘要： An aircraft flight control surface actuator that prevents against overtravel is provided with a lock which includes a pin (76) that is urged by spring (b 74) toward the wall (68) that is part of control gear (56) which travels along the axis of a threaded shaft (42) in response to rotation of main shaft (16). An aperture (70) in the wall (68) is aligned with pin (76) only at a neutral position of the flight control surface (12). Lever (80) depresses pin (76) against the force of spring (74) only so long as hydraulic system pressure for the actuator is supplied to cylinder (84).
摘要翻译： 防止超程的飞行器飞行器控制表面致动器设置有锁，所述锁包括弹簧（b 74）朝向作为控制齿轮（56）的一部分的壁（68）推动的销（76），所述控制齿轮（56）沿着 螺纹轴（42）的轴线响应于主轴（16）的旋转。 仅在飞行控制表面（12）的中间位置处，壁（68）中的孔（70）与销（76）对准。 只要驱动器的液压系统压力被供应到气缸（84），杠杆（80）就克服弹簧（74）的力而压住销（76）。
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公开(公告)号：US4721196A
公开(公告)日：1988-01-26
申请号：US823791
申请日：1986-01-29
申请人： John C. Layer , Jeffrey D. Metcalf
发明人： John C. Layer , Jeffrey D. Metcalf
摘要： An overtravel stop for a rotary shaft, including a fixed stop having at least a pair of stop jaws disposed at different radii from the axis of the rotary shaft. A follower member is provided about the rotary shaft and is adapted to rotate with the shaft within a selected travel limit. The follower member is associated with a stop member having at least a pair of stop jaws disposed at the same different radii as the stop jaws of the fixed stop. The follower member is rotationally shiftable with respect to the shaft when the shaft reaches its travel limit. The stop member is axially movable into engagement with the fixed stop when the follower member rotationally shifts relative to the shaft. At least some of the stop jaws have negative rake angles, and a shock absorber is provided behind the fixed stop.
摘要翻译： 一种用于旋转轴的超程停止件，包括具有至少一对设置在与旋转轴的轴线不同半径的止动爪的固定止动件。 随动元件设置在旋转轴周围，并且适于在所选行程极限内与轴一起旋转。 从动件与具有至少一对设置在与固定止动件的止动爪相同的不同半径处的止动爪的止动构件相关联。 当轴达到其行程极限时，从动构件可相对于轴旋转地移动。 当从动构件相对于轴旋转移动时，止动构件可轴向移动成与固定止动件接合。 至少一些止动爪具有负的前角，并且在固定止动件的后面设置减震器。
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公开(公告)号：US4685550A
公开(公告)日：1987-08-11
申请号：US780678
申请日：1985-09-26
申请人： Jeffrey D. Metcalf
发明人： Jeffrey D. Metcalf
IPC分类号： F16D15/00 , F16D27/118 , H02K7/00 , H02K16/00 , F16D11/10
CPC分类号： F16D27/118 , H02K16/00 , H02K7/003 , Y10T74/19056
摘要： In an actuation system having a pair of motors simultaneously operable for driving a movable member through a torque-summing gear box, there is a need to have a simply constructed, minimal cost, light weight quick disconnect mechanism operable to disconnect a motor which has failed fixed so that the other motor can continue to operate. The quick disconnect mechanism utilizes a tapered jaw clutch connecting driving and driven elements in the drive train between the motor and the torque-summing gear box, a ball detent mechanism for holding the clutch either engaged or disengaged and a short duty cycle solenoid. The solenoid can be momentarily energized to release the ball detent mechanism to permit an axial force derived from the driven member being back driven to separate the clutch and thereafter, the solenoid is de-energized to enable the ball detent mechanism to maintain the clutch disengaged. The solenoid is only momentarily operable to release first locking means including the ball detent mechanism to enable disengagement of the clutch and thereafter is de-energized to enable second locking means including the ball detent mechanism to hold the clutch disengaged and without necessity of continuous energization of the solenoid during the entire time in which the clutch is held disengaged.
摘要翻译： 在具有同时可操作以通过扭矩求和齿轮箱驱动可动构件的一对电动机的致动系统中，需要具有简单构造的，最小成本的重量轻的快速断开机构，其可操作以断开已失效的电动机 固定，使其他电机可以继续运行。 快速断开机构利用锥形卡爪式离合器，连接电动机和扭矩求和齿轮箱之间的传动系中的驱动元件和驱动元件，用于保持离合器接合或分离的球形止动机构和一个较短的占空比螺线管。 螺线管可以瞬间通电以释放球止动机构，以允许来自被驱动构件的轴向力被回驱动以分离离合器，此后，螺线管被断电以使得球止动机构能够保持离合器脱离。 螺线管只能瞬间操作以释放包括球形止动机构的第一锁定装置，以使离合器能够脱开并且此后被断电，以使第二锁定装置能够包括球形止动机构来保持离合器分离并且不需要连续通电 在离合器保持脱离的整个时间内的螺线管。
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公开(公告)号：US5338273A
公开(公告)日：1994-08-16
申请号：US9717
申请日：1993-01-27
IPC分类号： A63B21/22 , A63B23/035 , A63B23/04 , A63B69/18 , A63B21/00
CPC分类号： A63B23/0417 , A63B22/0012 , A63B22/203 , A63B23/03575 , A63B69/182 , A63B2022/0038 , A63B2022/0041 , A63B2071/025 , A63B21/225 , A63B69/0057
摘要： A synchronous/asynchronous exercise machine is changeable between a synchronous exercise mode wherein a user's limbs, such as his legs, oppositely reciprocate, and an asynchronous exercise mode wherein the user's limbs move independently. The synchronous/asynchronous exercise machine may comprise a first movable element for accepting a user's limb, and a second movable element for accepting another limb. A load source against which the user can exercise may also be provided. A first drive belt operatively connects the first movable element to the load source, and a second drive belt operatively connects the second movable element to the load source. A quick change mechanism, which may be connected to the first movable element, is releasably engagable with the second drive belt for changing the synchronous/asynchronous exercise machine between the synchronous exercise mode and the asynchronous exercise mode.
摘要翻译： 同步/异步运动机器可以在同步运动模式之间变化，其中用户的肢体（例如他的腿部）相对往复运动，以及异步运动模式，其中用户的肢体独立地移动。 同步/异步运动机可以包括用于接受用户肢体的第一可移动元件和用于接受另一肢体的第二可移动元件。 还可以提供用户可以锻炼的负载源。 第一驱动带可操作地将第一可移动元件连接到负载源，并且第二驱动带可操作地将第二可移动元件连接到负载源。 可以连接到第一可移动元件的快速更换机构与第二驱动带可释放地接合，用于在同步运动模式和异步运动模式之间改变同步/异步运动机。
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公开(公告)号：US4977794A
公开(公告)日：1990-12-18
申请号：US350216
申请日：1989-05-11
申请人： Jeffrey D. Metcalf
发明人： Jeffrey D. Metcalf
CPC分类号： B62M1/10 , A63B21/225 , F16F15/30
摘要： An exercise bicycle flywheel (1) comprises a pair of facing concave sheet metal discs (15A, 15B). The space defined between the discs is filled with a heavy material (M) which is a mixture of hematite chips, magnetite powder, hydrated lime, portland cement, and water.
摘要翻译： 运动自行车飞轮（1）包括一对相对的凹形金属片（15A，15B）。 盘之间的空间填充有重质材料（M），它是赤铁矿碎片，磁铁矿粉，熟石灰，波特兰水泥和水的混合物。
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公开(公告)号：US4884401A
公开(公告)日：1989-12-05
申请号：US238097
申请日：1988-08-30
IPC分类号： F15B20/00
CPC分类号： F15B20/00
摘要： A dual hydraulic motor system where motor wobblers are mechanically linked and the motor outputs are torque summed, is controlled by a three position dual valve assembly. Each valve assembly is controlled by pilot pistons that are mechanically linked to provide three functions, one being normal operation, a second where one motor must be shut-off and its load on the system is minimized and the third where both motors are shut-off and significant drag is then provided. These functions are implemented by a separate spool in each valve which has three independent stable positions.
摘要翻译： 机械连接电机摆动器和电机输出扭矩相加的双液压马达系统由三位双阀组件控制。 每个阀门组件由机械连接的先导式活塞控制，以提供三种功能，一种是正常操作，另一种则是一个电机必须关闭，其在系统上的负载最小化，另外一个电机关闭的第三个 然后提供显着的阻力。 这些功能由具有三个独立稳定位置的每个阀中的单独阀芯实现。
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