1,2,4-triazinone derivatives, their preparation and use
    8.
    发明授权
    1,2,4-triazinone derivatives, their preparation and use 失效
    1,2,4-三嗪酮衍生物,其制备和用途

    公开(公告)号:US4898862A

    公开(公告)日:1990-02-06

    申请号:US26290

    申请日:1987-03-16

    摘要: Compounds of formula (I): ##STR1## (in which: R.sup.1 is hydrogen or alkl; R.sup.2 is a variety of groups or atoms; R.sup.3 is optionally substituted hydroxy or --(NH).sub.n --NR.sup.5 R.sup.6, wherein R.sup.5 and R.sup.6 are a variety of groups or atoms, preferably alkyl substituted by heterocyclic, and n is 0 or 1; Q is oxygen or sulfur; and A is a C.sub.1 -C.sub.6 alkylene group) have valuable cardiotionic activity and may be used for the treatment of cardiac disorders. They may be prepared from corresponding compounds containing a benzene ring with a group --QH at the 1-position and a group --CO--CHR.sup.1 --NH--COOR.sup.7 at the 4-position by ring closure and introduction of the group of formula --A--CO--R.sup.3 in any order.

    摘要翻译: 式(I)化合物:其中:R 1是氢或烷基; R 2是各种基团或基团; R 3是任选取代的羟基或 - (NH)n -NR 5 R 6,其中R 5和R 6 是各种基团或原子,优选被杂环取代的烷基,n为0或1; Q为氧或硫; A为C1-C6亚烷基)具有有价值的心血管活性,可用于治疗心脏 疾病 它们可以由相应的化合物制备,所述化合物含有1-环基团-QH的苯环和通过闭环在4-位上的-CO-CHR1-NH-COOR7基团,并引入式-A- CO-R3以任何顺序。

    Fuel vapor discharge limiting device for fuel tank
    9.
    发明授权
    Fuel vapor discharge limiting device for fuel tank 失效
    燃油箱燃油蒸汽排放限制装置

    公开(公告)号:US5443561A

    公开(公告)日:1995-08-22

    申请号:US213970

    申请日:1994-03-16

    摘要: A fuel vapor discharge limiting device for limiting communication between a fuel tank and a fuel vapor discharge pipe for discharging a fuel vapor in the fuel tank. The fuel vapor discharge limiting device includes a first float valve for cutting off the communication between the fuel tank and the fuel vapor discharge pipe when a liquid level in the fuel tank rises near a predetermined full level; a relief valve for allowing the communication between the fuel tank and the fuel vapor discharge pipe when an internal pressure in the fuel tank becomes not less than a predetermined value; and a second float valve for blocking the communication allowed by the relief valve when the liquid level in the fuel tank abnormally rises over the predetermined full level. Accordingly, oversupply of liquid fuel to the fuel tank can be prevented, and the internal pressure in the fuel tank can be maintained always within a predetermined permissible range. Furthermore, discharge of the liquid fuel to the fuel vapor discharge pipe can be prevented.

    摘要翻译: 一种燃料蒸汽排放限制装置,用于限制燃料箱和用于排出燃料箱中的燃料蒸汽的燃料蒸汽排放管之间的连通。 燃料蒸气排出限制装置包括:第一浮阀,用于当燃料箱中的液位升高到预定的全部水平时,切断燃料箱与燃料蒸汽排放管之间的连通; 当燃料箱中的内部压力变得不小于预定值时,用于允许燃料箱和燃料蒸汽排出管之间的连通的安全阀; 以及第二浮阀,用于当燃料箱中的液位异常上升超过预定的全部水平时,阻止安全阀所允许的连通。 因此,可以防止液体燃料向燃料箱供过量供给,并且能够将燃料箱内的内部压力始终保持在规定的容许范围内。 此外,可以防止液体燃料排出到燃料蒸汽排放管。