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    • 24. 发明授权
    • Fast curing rubber blend
    • 快速固化橡胶混合物
    • US5162425A
    • 1992-11-10
    • US590260
    • 1990-09-28
    • Paul H. SandstromEmil M. FriedmanJ. Dale Massie, IIRobert A. Smith
    • Paul H. SandstromEmil M. FriedmanJ. Dale Massie, IIRobert A. Smith
    • C08L21/00
    • C08L21/00C08L9/00C08L9/06
    • It is highly desirable to be able to cure rubbers quickly since the amount of energy required for the curing process is reduced and the number of articles that can be cured in a mold in a given time is increased. In other words, the cycle time needed to cure articles made from such a rubber is reduced and the throughput of a mold utilized in curing such a rubber is increased. Unfortunately, most attempts to accelerate the cure rate of rubber have resulted in the rubber having poor scorch safety. The present invention discloses a fast curing rubber blend having excellent scorch safety which comprises: (a) from 50 to 98 weight percent of at least one polydiene rubber, and (b) from 2 to 50 weight percent of at least one vinylpyridine copolymer comprised of repeat units which are derived from a diene monomer and vinylpyridine wherein from 1 to 75 weight percent of the repeat units in said copolymer are derived from vinylpyridine. The rubber blends of the present invention have unexpectedly been shown to have particular utility in improving tire tread traction.
    • 由于固化过程所需的能量的量减少并且在给定时间内可以在模具中固化的制品的数量增加,所以非常希望能够快速地固化橡胶。 换句话说,固化由这种橡胶制成的制品所需的循环时间减少,并且用于固化这种橡胶的模具的生产量增加。 不幸的是,大多数加速橡胶固化速度的尝试导致橡胶具有差的焦烧安全性。 本发明公开了一种具有优异的焦烧安全性的快速固化橡胶共混物,其包括:(a)50至98重量%的至少一种聚二烯橡胶,和(b)2至50重量%的至少一种乙烯基吡啶共聚物, 衍生自二烯单体和乙烯基吡啶的重复单元,其中所述共聚物中1至75重量%的重复单元衍生自乙烯基吡啶。 本发明的橡胶混合物意外地被证明在改善轮胎胎面牵引力方面具有特别的用途。
    • 30. 发明授权
    • Magnetic game apparatus
    • 磁性游戏机
    • US3976296A
    • 1976-08-24
    • US528724
    • 1974-12-02
    • Robert A. Smith
    • Robert A. Smith
    • A63F7/06
    • A63F7/068
    • A game apparatus comprising a playing surface with a plurality of playing members on the surface. A ball member is adapted to move over the playing surface among the playing members with a magnetic element within the ball member. A rotatable surface located below the playing surface carries a plurality of second magnetic elements which exert magnetic forces on the magnetic element within the ball. The movement of the rotatable surface randomly positions the ball member on the playing surface and among the playing members.
    • 一种游戏装置,包括在表面上具有多个游戏部件的游戏面。 球部件适于在球部件​​内部具有磁性元件在游戏部件之间移动。 位于游戏表面下方的可旋转表面承载多个第二磁性元件,该第二磁性元件对球内的磁性元件施加磁力。 可旋转表面的运动将球形件随机定位在演奏表面和演奏构件之间。