Electrical safety device
    2.
    发明授权
    Electrical safety device 失效
    电气安全装置

    公开(公告)号:US5541803A

    公开(公告)日:1996-07-30

    申请号:US206966

    申请日:1994-03-07

    摘要: An electrical safety device is disclosed which utilizes a sensor conductor configured in a continuous loop and disposed in an electrical component so as to sense overtemperature or mechanical damage over a length or wide area of the component. The sensor may be simple insulated or non insulated copper wire. A low voltage potential is maintained across the sensor conductor. The sensor circuitry includes ambient temperature compensation.

    摘要翻译: 公开了一种电气安全装置,其使用以连续环路配置并设置在电气部件中的传感器导体,以便感测部件的长度或宽度区域上的过热或机械损伤。 传感器可以是简单的绝缘或非绝缘铜线。 在传感器导体上保持低电压电位。 传感器电路包括环境温度补偿。

    Fiber optic damage sensor for wire and cable
    3.
    发明授权
    Fiber optic damage sensor for wire and cable 失效
    用于电线电缆的光纤损伤传感器

    公开(公告)号:US06559437B1

    公开(公告)日:2003-05-06

    申请号:US09665828

    申请日:2000-09-20

    IPC分类号: G01J104

    CPC分类号: G01M11/086 H01B7/328

    摘要: An optical fiber sensor, disposed in the insulation of a wire or cable, provides a means of detecting damage to the insulation of the wire or cable. An optical measurement device, such as an optical time domain reflectometer (OTDR), coupled to the sensor, detects the presence and location of a sensor fault or stress. The sensor is positioned between the conductor and the outside surface of the conductor so that the OTDR will sense damage before the conductor is exposed or contacted by a damage element.

    摘要翻译: 设置在电线或电缆的绝缘体中的光纤传感器提供了检测对电线或电缆的绝缘的损坏的手段。 耦合到传感器的诸如光时域反射计(OTDR)的光学测量装置检测传感器故障或应力的存在和位置。 传感器位于导体和导体的外表面之间,使得OTDR将在导体暴露或接触损坏元件之前感测到损坏。

    Aerial reforestation system
    4.
    发明授权

    公开(公告)号:US06510805B2

    公开(公告)日:2003-01-28

    申请号:US09819405

    申请日:2001-03-29

    IPC分类号: B64D118

    摘要: A reforestation and nourishing practice by the use of a lighter-than-air airship system, for dispersing and planting tree saplings, primarily in remote regions which may have been devastated by fire, where access to such regions by personnel and ground equipment is difficult. The airship system comprises an aerodynamically configured structure having a semi-rigid keel or skeleton, where lift is provided by helium, with the keel mounting a liquid management mechanism consisting of a reservoir open to the outside for resupply of liquid or water, a conduit leading to a holding tank, and a piping distribution and nozzle assembly below the airship system to spray or dispense the liquid or water over selected areas to water or nourish the newly planted trees. The mechanism for temporarily storing and eventually dispensing the tree saplings is a rack mounting at least one cylindrical canister containing plural compartments. The cylindrical canister includes a sliding cover that is operable to open and close one compartment to allow stowage and release of the tree saplings.