Transducer for detecting pressure changes in pipes
    4.
    发明授权
    Transducer for detecting pressure changes in pipes 失效
    用于检测管道压力变化的传感器

    公开(公告)号:US4807479A

    公开(公告)日:1989-02-28

    申请号:US163846

    申请日:1988-03-03

    摘要: A transducer for detecting pressure changes in pipes by detecting deformation of the pipes and for converting the pressure changes in the pipes into electric signals uses a bimorph as a sensor element. This bimorph is pressed to the pipe surface by means of a holder. The transducer is free from complicated adjustment of the pressing force against the sensor element, very simple in structure, easy to adjust when mounting, light in weight so as to hardly influence an injection system, and less susceptible to effects of noise due to vibration.

    摘要翻译: 用于通过检测管道的变形并将管道中的压力变化转换为电信号来检测管道中的压力变化的换能器使用双压电晶片作为传感器元件。 该双压电晶片通过支架压到管表面。 传感器不需要对传感器元件的按压力的复杂调整,结构非常简单,安装时易于调节,重量轻,几乎不影响注射系统,并且不易受到振动引起的噪音影响。

    Electric heating tube
    5.
    发明授权
    Electric heating tube 失效
    电加热管

    公开(公告)号:US4156127A

    公开(公告)日:1979-05-22

    申请号:US783496

    申请日:1977-03-31

    摘要: A heating tube adapted to electrically heat a fluid carried therethrough includes an inner tubular layer of polytetrafluoroethylene, a second tubular layer surrounding the inner layer and being formed of a homogeneous mixture of polytetrafluoroethylene and electrically conductive carbon, and a third layer surrounding the second layer and being formed of polytetrafluoroethylene. The three layers are coextruded together. The third layer is cut away at at least two circumferential points and the exposed second layer is there provided with a sintered coating for finely divided silver and finely divided polytetrafluoroethylene. The sintered coating is then wrapped with a silicone resin tape containing dispersed silver particles and a metal ring is then fitted over the silicone resin tape thereby forming an electrical terminal for the heating tube.

    摘要翻译: 一种适于电热加热穿过其中的流体的加热管包括聚四氟乙烯的内管层,围绕内层并由聚四氟乙烯和导电碳均匀混合物形成的第二管层,以及围绕第二层的第三层和 由聚四氟乙烯形成。 三层共挤出。 第三层在至少两个周向点处被切除,并且暴露的第二层在那里设置有用于细分散的银和细碎聚四氟乙烯的烧结涂层。 然后将烧结的涂层用含有分散的银颗粒的硅树脂胶带包裹,然后将金属环装配在硅树脂胶带上,从而形成用于加热管的电端子。

    Polymeric composite heating element
    7.
    发明授权
    Polymeric composite heating element 失效
    聚合复合加热元件

    公开(公告)号:US4636331A

    公开(公告)日:1987-01-13

    申请号:US753564

    申请日:1985-07-10

    CPC分类号: B32B27/18 H01C7/027

    摘要: A polymeric composite heating element comprising a composition composed of a vinylidone fluoride-trifluoroethylene copolymer containing 30-85 mole % of vinylidene fluoride and 3-35% by weight based on the weight of the copolymer of electrically conductive carbon mixed in this copolymer.

    摘要翻译: 一种聚合物复合加热元件,其包含基于混合在该共聚物中的导电性碳共聚物的重量,该组合物由含有30-85摩尔%偏二氟乙烯和3-35重量%的乙烯基酮氟化物 - 三氟乙烯共聚物组成。

    Electrically conductive coating composition
    8.
    发明授权
    Electrically conductive coating composition 失效
    导电涂料组合物

    公开(公告)号:US4547311A

    公开(公告)日:1985-10-15

    申请号:US461598

    申请日:1983-01-27

    CPC分类号: C09D5/24 H01B1/24

    摘要: An electrically conductive coating composition which comprises (a) a dispersion of carbon black or a mixture of carbon black and graphite in an organic solvent and (b) a solution of a polymer in an organic solvent, the viscosity of the composition being higher than those of the dispersion (a) and the solution (b) being homogeneous and stable, a coating film formed therefrom having a low volume resistivity.

    摘要翻译: 一种导电涂料组合物,其包含(a)炭黑或炭黑和石墨的混合物在有机溶剂中的分散体和(b)聚合物在有机溶剂中的溶液,组合物的粘度高于 的分散体(a)和溶液(b)是均匀和稳定的,由其形成的具有低体积电阻率的涂膜。