Electrically shielded enclosure with magnetically retained removable
cover
    2.
    发明授权
    Electrically shielded enclosure with magnetically retained removable cover 失效
    带有磁力保持的可拆卸盖的电屏蔽外壳

    公开(公告)号:US5534663A

    公开(公告)日:1996-07-09

    申请号:US340303

    申请日:1994-11-14

    IPC分类号: H05K9/00

    CPC分类号: H05K9/0015

    摘要: Disclosed is an electrically shielded enclosure having electrical components therein and a removable electrically shielded cover over an opening in the enclosure with a magnetic securement mechanism provided to removably secure the cover to the enclosure in a manner which will provide easy access, yet also provide an electrical seal between the cover and the enclosure capable of preventing the passage of electrical radiation through the joint between the cover and the enclosure. Magnets are provided on the enclosure peripherally around the opening and facing the cover, and a ferromagnetic surface is provided on the mating surface of the cover facing the magnets, with a continuous electrical seal provided between the magnets and the ferromagnetic surface on the cover to prevent the leakage of electromagnetic radiation therethrough. In one embodiment the electrical seal includes a flexible metal casing or surface, which is attached to the enclosure and positioned between the magnets and the ferromagnetic surface on the cover, and which is sufficiently flexible to be capable of conforming to the ferromagnetic surface to provide an electrical seal between the cover and the enclosure. In another embodiment, the electrical seal includes a metal mesh associated with the enclosure and positioned between the magnets on the enclosure and the ferromagnetic surface on the cover. The metal mesh is also capable of conforming to the surface of the ferromagnetic surface to thereby provide an electrical seal between the cover and the enclosure.

    摘要翻译: 公开了一种电屏蔽的外壳,其中具有电气部件,并且在外壳中的开口上方具有可拆卸的电屏蔽盖,其具有磁性固定机构,其以可提供容易接近的方式可拆卸地将盖固定到外壳,而且还提供电 密封盖和外壳之间能够阻止电辐射通过盖和外壳之间的接头。 在外壳周围围绕开口设置磁铁并且面向盖子,并且铁磁表面设置在面对磁体的盖的配合表面上,并且在磁体和盖板上的铁磁表面之间设置有连续的电气密封,以防止 电磁辐射的泄漏通过其中。 在一个实施例中,电气密封件包括柔性金属壳体或表面,其附接到壳体并且定位在磁体和盖子上的铁磁表面之间,并且其具有足够的柔性以能够符合铁磁性表面以提供 盖和外壳之间的电气密封。 在另一个实施例中,电气密封包括与外壳相关联并且定位在外壳上的磁体和盖上的铁磁表面之间的金属网。 金属网也能够符合铁磁表面的表面,从而在盖和外壳之间提供电气密封。

    Elastomeric composition
    4.
    发明授权
    Elastomeric composition 失效
    弹性成分

    公开(公告)号:US07425591B2

    公开(公告)日:2008-09-16

    申请号:US10398255

    申请日:2001-10-16

    IPC分类号: C08K9/04

    摘要: The present invention is a composition including an isobutylene-based copolymer and polybutene. The copolymers may be mixed with an exfoliating compound and clay, the entire composition forming a nanocomposite. The clay may or may not have an additional exfoliating treatment present prior to mixing with the interpolymer. The composition of the invention has improved air barrier properties and processing properties, and is suitable as an air barrier. One embodiment of the invention is an elastomeric composition including at least one random copolymer of at least a C4 to C7 isomonoolefin derived unit, at least one filler, and polybutene oil having a number average molecular weight greater than 400. The copolymer may be selected from a halogenated poly(isobutylene-co-p-methylstyrene), a halogenated star-branched butyl rubber, or a halogenated butyl rubber, and mixtures thereof.

    摘要翻译: 本发明是包含异丁烯类共聚物和聚丁烯的组合物。 共聚物可以与去角质化合物和粘土混合,整个组合物形成纳米复合材料。 在与互聚物混合之前,粘土可以或可以不具有额外的去角质处理。 本发明的组合物具有改善的空气阻隔性和加工性能,并且适合作为空气阻挡层。 本发明的一个实施方案是弹性体组合物,其包含至少一种至少一种C 4〜C 7异丙烯衍生的单元的无规共聚物,至少一种填料和聚丁烯油 数均分子量大于400.共聚物可以选自卤化聚(异丁烯 - 共对甲基苯乙烯),卤代星型支链丁基橡胶或卤化丁基橡胶及其混合物。