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    • 4. 发明授权
    • Seat device for a ladder
    • 梯子座椅装置
    • US4730697A
    • 1988-03-15
    • US1387
    • 1987-01-08
    • John C. Campbell
    • John C. Campbell
    • E06C7/16
    • E06C7/16
    • A seat device for a ladder, which seat device comprises a frame, a first hook device extending from the frame and for fitting over a first rung of the ladder, a second hook device extending from the frame and for fitting over a second and adjacent rung of the ladder, a foldable seat extending from the frame and for enabling a person to sit down while working on the ladder, a support member for supporting the seat in an unfolded position, and releasable locking means for maintaining the seat in its unfolded position and for preventing accidental collapse of the seat to a folded position.
    • 一种用于梯子的座椅装置,该座椅装置包括框架,从框架延伸并用于装配在梯子的第一梯级上的第一钩装置,从框架延伸并用于装配在第二和相邻梯级上的第二钩装置 梯子的一个可折叠的座,从框架延伸并使人能够在梯子上工作时能够坐下;用于在展开位置支撑座椅的支撑构件,以及可释放的锁定装置,用于将座椅保持在展开位置, 用于防止座椅意外塌陷到折叠位置。
    • 8. 发明授权
    • Highly conductive polymer blends with intrinsically conductive polymers
    • 具有固有导电性聚合物的高导电性聚合物共混物
    • US5595689A
    • 1997-01-21
    • US278165
    • 1994-07-21
    • Vaman G. KulkarniJohn C. Campbell
    • Vaman G. KulkarniJohn C. Campbell
    • H01B1/12H01B1/00
    • H01B1/128
    • A polymer blend according to the invention of the type including an intrinsically conductive polymer disbursed in a matrix selected from thermoplastic polymers, monomers, polymerizable precursors and combinations thereof is improved by an amount of a non-polymeric polar additive having a boiling point greater than about 100.degree. C. at 760 mm pressure and greater than the processing temperature of the matrix polymer incorporated in the polymer blend, in an amount sufficient to impart an electrical conductivity to the blend which is greater than that of the blend without the non-polymeric polar additive. A blend according to the invention includes a matrix material selected from thermoplastic polymers, monomers and polymer precursors and combinations thereof, and an intrinsically conductive polymer and a non-polymeric highly polar additive, disbursed into a polymer blend and having a conductivity of greater than about 2.5 S/cm. A composition according to the invention includes a precursor selected from polymers and polymerizable monomers, an intrinsically conductive polymer with a conductivity of about 1 to 5 S/cm and a non-polymeric polar additive having a conductivity of greater than that of the blend resulting in a blend having a conductivity greater than about 2 to 5 s/cm. A blend having thermo and conductive stability includes an intrinsically conductive polymer, an insulating thermoplastic polymer, an insulating thermoplastic polymer and an ester-free plasticizer which is thermally stable to at least about 240.degree. C., the blend having a conductivity of greater than 10.sup.-2 S/cm. A method for preparing such compositions and blends is also provided.
    • 根据本发明的包含基于选自热塑性聚合物,单体,可聚合前体及其组合的基质的本征导电聚合物的聚合物共混物通过一定量的沸点大于约 在760mm压力下100℃,并且大于掺入聚合物共混物中的基体聚合物的加工温度,其量足以赋予共混物导电性,其大于未掺杂非极性的共混物的导电性 添加剂。 根据本发明的共混物包括选自热塑性聚合物,单体和聚合物前体及其组合的基质材料,以及分散在聚合物共混物中并且具有大于约的导电性的固有导电聚合物和非聚合高极性添加剂 2.5 S / cm。 根据本发明的组合物包括选自聚合物和可聚合单体的前体,导电率为约1至5S / cm的本征导电聚合物和导电率大于共混物导电率的非聚合极性添加剂,导致 具有大于约2至5s / cm的电导率的共混物。 具有热和导电稳定性的共混物包括本征导电聚合物,绝缘热塑性聚合物,绝缘热塑性聚合物和不稳定至少约240℃的无酯增塑剂,该共混物的导电率大于10 -2S / cm。 还提供了制备这种组合物和共混物的方法。