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    • 3. 发明授权
    • Zero speed indicating devices and processes for testing same
    • 零速指示装置和测试过程
    • US06928855B2
    • 2005-08-16
    • US10401821
    • 2003-03-28
    • Ralph L. BarnettTheordore Liber
    • Ralph L. BarnettTheordore Liber
    • F16P3/08G01P13/00G01P21/02G01P21/00
    • F16P3/08G01P13/00G01P21/02Y10S292/65Y10T70/5341Y10T70/8027Y10T74/111
    • The subject invention is directed to methods, processes and decisions on test outcomes for testing for faulty, therefor dangerous, performance of zero speed indicators that are used to control the opening of barriers guarding moving machine components. The indicators may be tested by removing them from the components during operation without shutting down production or in certain situations the indicators may be tested during the run down phase of the components caused by machine stop initiations. The tests allow to anticipate and hence prevent hazardous opening of barriers due to a faulty zero speed indication. Additionally, the invention is directed to testing of the insertion of motion interference devices in conjunction with zero speed indicators, both of which must perform correctly in order to permit the unlocking and opening of the protective barrier. There are included various exemplary devices for effecting the testing function.
    • 本发明涉及用于测试故障的测试结果的方法,过程和决定,因此用于控制打开阻挡移动机器部件的障碍物的零速度指示器的危险的性能。 指示器可以在操作过程中将其从组件中拆下来进行测试,而不会关闭生产,或者在某些情况下,指示器可能在由停机启动引起的部件运行阶段期间进行测试。 测试允许预期并因此防止由于零速指示故障导致的障碍物的危险打开。 另外,本发明涉及对零速度指示器的运动干扰装置的插入的测试,这两者都必须正确执行,以便允许解锁和打开保护屏障。 包括用于实现测试功能的各种示例性装置。
    • 9. 发明授权
    • Anti-vacuum drain cover
    • 防真空排水盖
    • US06230337B1
    • 2001-05-15
    • US09499981
    • 2000-02-08
    • Ralph L. Barnett
    • Ralph L. Barnett
    • E04H400
    • E04H4/1236
    • An anti-vacuum drain cover is defined by a centrally supported grating together with at least one outwardly extending tributary tube. When the grating is obstructed, the fluid may still be suctioned through at least one tributary tube preventing the formation of vacuum conditions within the main drain. The outboard end of the tributary tube may be fashioned in an irregular pattern to preclude deliberate blockage with one's hand. The grating may further incorporate an anti-hair entanglement design, such as self shedding cantilever elements, which provide anti-hair snare properties. The tributary tubes may be straight or curved with sufficient length to minimize hair entanglement through the tributary tubes. The outboard ends of the tributary tubes may also be located sufficiently far from the grating to eliminate the possibility of simultaneously blocking all suction sites with a single body.
    • 反真空排水盖由中央支撑的格栅与至少一个向外延伸的支流管一起限定。 当光栅被阻塞时,流体仍然可以通过至少一个支流管被抽吸,以防止在主排水管内形成真空状况。 支流管的外侧端可以形成为不规则的图案,以防止用手蓄意堵塞。 光栅可以进一步包含提供抗毛发圈套性质的抗毛发缠结设计,例如自脱落悬臂元件。 支流管可以是直的或弯曲的,具有足够的长度以最小化通过支流管的毛发缠结。 支流管的外侧端部也可以位于与光栅足够远的位置,以消除用单个主体同时阻塞所有抽吸位置的可能性。