Data link module for time division multiplexing control systems
    4.
    发明授权
    Data link module for time division multiplexing control systems 失效
    用于时分复用控制系统的数据链路模块

    公开(公告)号:US5631854A

    公开(公告)日:1997-05-20

    申请号:US565511

    申请日:1995-11-30

    Inventor: Robert E. Riley

    Abstract: A programmable data link module (32) for use in a time division multiplexing control system (30) having a plurality of modules interconnected by a bus (40) for passing control signals between data link modules on a serial multiplex basis. Each module includes an integrated circuit (80) having signal conditioning circuits (180, 186 and 188) including a programmable hysteresis circuit (126), a power on reset delay circuit (190), a safety input inhibit circuit (220), a clock loss detect circuit (240), a safety output protection circuit (262), a data verifier (260), a polarity selector for a third output terminal (350), an input synchronizer (182 and 184), a combined mode/sync output terminal (110), a multiplex clock output terminal (108), a programing circuit (232) for accepting programming over the clock bus (44) and data bus (46), input/output word extender circuits (104, 106), a high voltage protection circuit (420) including a transistor (600) and a data bus integrity checker (630).

    Abstract translation: 一种用于时分复用控制系统(30)的可编程数据链路模块(32),具有通过总线(40)互连的多个模块,用于在串行多路复用的基础上在数据链路模块之间传递控制信号。 每个模块包括具有信号调理电路(180,186和188)的集成电路(80),包括可编程滞后电路(126),上电复位延迟电路(190),安全输入禁止电路(220),时钟 损耗检测电路(240),安全输出保护电路(262),数据验证器(260),第三输出端子(350)的极性选择器,输入同步器(182和184),组合模式/同步输出 终端(110),复用时钟输出端(108),用于接受通过时钟总线(44)和数据总线(46)编程的编程电路(232),输入/输出字扩展器电路(104,106) 包括晶体管(600)和数据总线完整性校验器(630)的高压保护电路(420)。

    Isocyanate-based rigid foam
    9.
    发明授权
    Isocyanate-based rigid foam 失效
    异氰酸酯基硬质泡沫

    公开(公告)号:US06245826B1

    公开(公告)日:2001-06-12

    申请号:US09245630

    申请日:1999-02-05

    Abstract: An isocyanate-based rigid foam comprising the reaction product of an organic and/or modified organic polyisocyanate, a resin blend and, optionally, a relatively low molecular weight chain extender or crosslinker in the presence of a catalyst, and, optionally, further auxiliaries and/or additives, wherein the resin blend comprises a phthalic anhydride-initiated polyester polyol, a blowing agent comprising a C4-C6 hydrocarbon, and a fatty acid or fatty alcohol ethoxylate compatibilizing agent. The blowing agent is soluble in the polyol composition, thereby reducing the risks associated with such blowing agents in processes for making rigid polymer foam articles and providing rigid foams having good dimensional stability and improved insulation properties.

    Abstract translation: 一种基于异氰酸酯的刚性泡沫,其包含有机和/或改性的有机多异氰酸酯,树脂共混物和任选的相对低分子量的增链剂或交联剂在催化剂存在下的反应产物,以及任选的其它助剂和 /或添加剂,其中树脂共混物包含邻苯二甲酸酐引发的聚酯多元醇,包含C 4 -C 6烃的发泡剂和脂肪酸或脂肪醇乙氧基化物相容剂。 发泡剂可溶于多元醇组合物中,从而在制备刚性聚合物泡沫制品的方法中提供与这种发泡剂相关的风险,并提供具有良好尺寸稳定性和改进的绝缘性能的刚性泡沫。

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