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    • 3. 发明授权
    • Pneumatic actuator
    • 气动执行器
    • US06708489B2
    • 2004-03-23
    • US09922133
    • 2001-08-03
    • Roger MasseyDavid Holloway
    • Roger MasseyDavid Holloway
    • F16D3102
    • F15B15/065F15B15/17F15B20/004
    • A double-acting, piston driven actuator for providing a double action rotary powered output, having a stepped bore housing a double acting piston having a larger diameter end and a smaller diameter end therein; a three way valve selectively to supply pressurized fluid to the larger end the pressurized fluid continuously supplying the pressurized fluid to the smaller diameter portion of the bore. An optional safety mechanism having a spring biased second piston for biasing the double acting piston to a safe position upon failure of the pressurized fluid delivery system is also provided.
    • 一种用于提供双作用旋转动力输出的双作用式活塞驱动致动器,具有一个阶梯孔,其具有一个具有较大直径端和一个较小直径端的双作用活塞; 选择性地将加压流体供应到较大端的三通阀,加压流体将加压流体连续地供应到孔的较小直径部分。 还提供了一种可选的安全机构,其具有弹簧偏压的第二活塞,用于在加压流体输送系统失效时将双作用活塞偏置到安全位置。
    • 4. 发明授权
    • Valve latching device for single handed operation
    • 阀门闭锁装置,用于单手操作
    • US5772177A
    • 1998-06-30
    • US840122
    • 1997-04-14
    • David G. HollowayKenneth MaddenRoger Massey
    • David G. HollowayKenneth MaddenRoger Massey
    • F16K35/02F16K35/00
    • F16K35/025
    • An improved latch mechanism for a fluid flow control valve. The latch mechanism having a latch body, a spring, a plunger and a thumb release lever for disengagement of the plunger. The latch mechanism is attached to a valve handle which controls the fluid flow rate through the valve. Provided with the latch, the handle and thereby the valve can be locked into either a closed or open position at the limits of the valves' necessary rotation thereby preventing inadvertent opening or closing of the valve. The thumb release lever disengages the plunger with detent notches provided in the valve body allowing safe and efficient single handed operation of the handle and latch mechanism even under adverse environmental conditions when operator dexterity is impaired by gloves.
    • 用于流体流量控制阀的改进的闩锁机构。 闩锁机构具有闩锁体,弹簧,柱塞和用于使柱塞脱离的拇指释放杆。 闩锁机构附接到阀手柄,其控制通过阀的流体流速。 提供有闩锁,手柄,从而阀可以在阀的必要旋转的极限处锁定在闭合或打开位置,从而防止阀的无意的打开或关闭。 拇指释放杆通过设置在阀体中的止动凹口使柱塞脱离,即使在操作者灵巧被手套损伤时,即使在不利的环境条件下,手柄和闩锁机构也可以安全有效地单手操作。