Solar heat absorbing tubing
    1.
    发明授权
    Solar heat absorbing tubing 失效
    太阳能吸热管

    公开(公告)号:US3968786A

    公开(公告)日:1976-07-13

    申请号:US470254

    申请日:1974-05-15

    摘要: An improved form of solar heat absorbing tubing comprises a plastic material which contains small subdivided black body absorber particles being fully distributed throughout the thickness of the tubing. A preferred form of tubing will utilize electrical conductive carbon, or carbonized particles, in an amount to provide conductivity to the resulting tubing such that there may be electroplating or electrostatic spray coating for the tubing to still further enhance its absorptive and reradiation properties.

    摘要翻译: 一种改进形式的太阳能吸热管包括塑料材料,其包含完全分布在管道整个厚度上的小细分黑体吸收体颗粒。 管道的优选形式将利用导电碳或碳化颗粒,其量为所得管材提供导电性,使得可以使用用于管道的电镀或静电喷涂来进一步增强其吸收和再辐射性能。

    Precision type resistor
    3.
    发明授权
    Precision type resistor 失效
    精密型电阻

    公开(公告)号:US3973234A

    公开(公告)日:1976-08-03

    申请号:US513026

    申请日:1974-10-08

    IPC分类号: H01C1/012

    CPC分类号: H01C1/012

    摘要: Improved forms of electric resistance elements or resistors may be made from semiconducting organic-refractory oxide fibers, as for example drawn alumina fibers which have been subjected to contact with a pyrolyzable organic substance at a temperature above about 400.degree. C. A few, or a large number of the semiconductive fibers, can be used in a group or bundle form to provide a desired resistance for a particular resistor. A preferred form of resistance element will cover the fibers in a quartz tube or other suitable encapsulating material to preclude moisture problems.

    摘要翻译: 电阻元件或电阻器的改进形式可以由半导体有机难熔氧化物纤维制成,例如在高于约400℃的温度下与可热解的有机物质接触的拉伸氧化铝纤维。几个或 大量的半导体纤维可以以组或束形式使用,以为特定电阻器提供期望的电阻。 电阻元件的优选形式将覆盖石英管或其它合适的封装材料中的纤维以排除湿气问题。