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157 条记录 (耗时 0.013 秒)

    Secondary speed sensor for governed air grinders
    1.
    发明授权
    Secondary speed sensor for governed air grinders 失效
    二次速度传感器用于管理空气研磨机

    公开(公告)号：US4184819A

    公开(公告)日：1980-01-22

    申请号：US871389

    申请日：1978-01-23

    申请人： Melvin D. Clark

    发明人： Melvin D. Clark

    IPC分类号： B24B47/14 ,  F01B25/16 ,  F01C20/08 ,  G01P3/20 ,  G05D13/10 ,  F01C21/12

    CPC分类号： F01C20/08 ,  Y10T137/1026 ,  Y10T137/1153

    摘要： A speed sensor is attached to the output shaft of the rotary vane air motor. The speed sensor includes a body member which is pivotally mounted at one end on the output shaft for movement about an axis parallel to the shaft axis. The opposite end of the body member is biased into engagement with a locking pin. So long as the shaft of the air motor does not exceed a threshold speed, the body member remains in the described position. Upon exceeding a threshold speed, the body member disengages from the locking pin due to centrifugal force acting thereon and then engages a movable shutter. In this manner, the shutter is moved by the body member to close air flow passages to the air motor.

    摘要翻译： 速度传感器安装在旋转叶片气动马达的输出轴上。 速度传感器包括主体构件，该主体构件一端枢转地安装在输出轴上，用于围绕平行于轴线的轴线移动。 主体构件的相对端被偏压成与锁定销接合。 只要空气马达的轴不超过阈值速度，主体部件保持在所述位置。 当超过阈值速度时，主体部件由于作用在其上的离心力而从锁定销脱离，然后接合活动快门。 以这种方式，快门由主体部件移动以关闭到空气马达的空气流动通道。

    Overspeed saftey control mechanism for rotary tools
    2.
    发明授权
    Overspeed saftey control mechanism for rotary tools 失效
    用于旋转工具的超速安全控制机构

    公开(公告)号：US3932071A

    公开(公告)日：1976-01-13

    申请号：US501464

    申请日：1974-08-28

    申请人： Raymond J. Schaedler

    发明人： Raymond J. Schaedler

    IPC分类号： F01C13/02 ,  B24B23/02 ,  B24B47/14 ,  B24B55/00 ,  F01B25/06 ,  F16P7/02 ,  F01C21/12 ,  G05D13/10

    CPC分类号： B24B47/14 ,  B24B23/026 ,  B24B55/00 ,  F01B25/06 ,  F16P7/02 ,  Y10T137/1153

    摘要： Overspeed safety control mechanism for shutting off operating air flow to the motor of a rotary surface grinding tool when the motor overspeeds beyond a rated governed maximum, including a circular body rotatable with the motor and carrying a ball valve which is adapted to be centrifugally released and entered into a pocket to block flow of operating air to the motor when the latter overspeeds, the speed of the motor being normally controlled by a speed governor.

    摘要翻译： 超速安全控制机构，用于当电动机超速超过额定控制的最大值时，切断工作气流到旋转表面磨削工具的电动机，包括可与电动机一起旋转的圆形主体，并承载适于离心式释放的球阀， 进入一个口袋，当后者超速时阻止运行空气流向马达，马达的速度通常由调速器控制。

    Air tool overspeed shutoff device
    3.
    发明授权
    Air tool overspeed shutoff device 失效
    空气工具超重开关装置

    公开(公告)号：US3930764A

    公开(公告)日：1976-01-06

    申请号：US536388

    申请日：1974-12-26

    申请人： George R. Curtiss

    发明人： George R. Curtiss

    IPC分类号： B24B47/14 ,  F01B25/06 ,  F01B25/16 ,  F01C20/28 ,  F01C21/12 ,  G05D13/10

    CPC分类号： F01B25/06 ,  F01C20/28 ,  Y10T137/1026 ,  Y10T137/1153

    摘要： An overspeed shutoff device for use in a rotary pneumatic tool is disclosed. The device is operable to shut off air supply to the motor on failure of its governor to function properly in preventing overspeeding of the motor. The device includes a valve closing plate positioned in the path of air flow to the pneumatic motor, just upstream of an inlet port for passage of air into the motor. In normal operation of the tool the valve plate, which rotates with the motor drive shaft, is retained in a position spaced from the air inlet port by a locking mechanism engaging the drive shaft of the tool to prevent axial movement therealong. The plate locking device comprises a cantilever mounted spring wire in engagement with a groove in the drive shaft and a centrifugally responsive weight operably connected to disengage the wire from the groove in response to the attainment of a predetermined rotary speed. Upon failure of the main governor of the tool and consequent acceleration of the motor to such predetermined speed, the wire is disengaged from the shaft groove and the air pressure drop across the valve inlet port causes the closure plate to move toward and cover the inlet port, thereby stopping the flow of air to the motor.

    Speed control and cut-off device
    4.
    发明授权
    Speed control and cut-off device 失效
    速度控制和切断装置

    公开(公告)号：US3767332A

    公开(公告)日：1973-10-23

    申请号：US3767332D

    申请日：1971-08-16

    申请人： BLACK & DECKER MFG CO

    发明人： HUFFAKER D ,  WICKHAM J ,  WORDSWORTH A

    IPC分类号： G05D13/04 ,  B23Q11/00 ,  B24B47/18 ,  B24B55/00 ,  F01B25/16 ,  F01C13/02 ,  F01C20/08 ,  F01C20/28 ,  G05D13/38 ,  F01C21/12 ,  F04C15/02 ,  F04C29/08

    CPC分类号： B24B55/00 ,  F01C20/08 ,  F01C20/28 ,  Y10T137/1153

    摘要： A powered rotary grinder including a vane-type fluid motor having a rotor supported within a housing. Pressurized fluid is admitted to the motor through a control valve to drive the rotor. A pivoted lever is engageable with the control valve and is actuated by flyweights attached to the rotor to regulate the speed of the rotor. The control valve includes normally latched, stored energy means which, when released, slams the control valve completely shut to cut off flow of pressurized fluid to the motor. A centrifugally actuated weight or weights interconnected with the rotor are operable to release the latched stored energy means should the rotor overspeed and the regulator fail to operate. In one embodiment, the weights include interengaged means which require that all the weights move radially outwardly of the rotor conjointly to effect release of the latched, stored energy means. This interengaged means insures that only centrifugal force can move the weights and that they cannot accidentally or unintentionally move to effect release of the stored energy means in the event, for example, the grinder is dropped or is otherwise struck with a sharp blow.

    摘要翻译： 一种动力旋转研磨机，包括具有支撑在壳体内的转子的叶片型流体马达。 加压流体通过控制阀进入电动机以驱动转子。 枢转杠杆可与控制阀啮合，并通过连接在转子上的飞轮来驱动，以调节转子的转速。 控制阀包括通常锁定的储存能量装置，当释放时，控制阀完全关闭，以切断加压流体到电动机的流动。 与转子互连的离心致动重量或重量可操作以在转子超速并且调节器不能操作时释放锁存的储能装置。 在一个实施例中，重物包括相互联接的装置，其需要所有的重物一起径向向外移动转子，以实现锁定的储存能量装置的释放。 这种相互接合的方式确保只有离心力可以移动重物，并且在例如磨碎机掉落或以其它方式冲击的情况下，它们不会意外或无意地移动以实现储存能量装置的释放。