Preformed EMI/RFI shielding compositions in shaped form
    45.
    发明申请
    Preformed EMI/RFI shielding compositions in shaped form 审中-公开
    成形的EMI / RFI屏蔽组合物

    公开(公告)号:US20040220327A1

    公开(公告)日:2004-11-04

    申请号:US10837337

    申请日:2004-04-30

    CPC classification number: C08K7/06 C08K9/02 C08L81/04

    Abstract: Electrically conductive preformed compositions comprising sulfur-containing polymers in shaped form and the use of preformed compositions in shaped form to seal apertures are disclosed. The preformed compositions can be used to seal an aperture having EMI/RFI shielding effectiveness.

    Abstract translation: 公开了导电预成型组合物,其包含成型形式的含硫聚合物和使用成形形式的预成型组合物来密封孔。 预成型组合物可用于密封具有EMI / RFI屏蔽效能的孔。

    Expandable plunger head assemblies for sealant dispensing guns

    公开(公告)号:US11712711B2

    公开(公告)日:2023-08-01

    申请号:US17277648

    申请日:2019-09-19

    CPC classification number: B05C17/00596 B05C17/00576 B65D83/0033

    Abstract: Sealant dispensing cartridge assemblies including radially expandable collets are disclosed. A plunger head assembly includes a ram head attached to a plunger rod. As the plunger rod is advanced into the sealant cartridge, the ram head presses against a rear side of a movable plunger against an opposing force created by a sealant contained in the cartridge on a front side of the plunger. As the plunger rod is further advanced, the collet contacts the ram head and radially expands against the inner sidewall of the plunger. The resulting radial force presses the sidewall of the plunger against the inner surface of the cartridge to thereby reduce or prevent unwanted leakage of the sealant around the plunger.

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