Push-drive chain
    2.
    发明授权
    Push-drive chain 失效
    推驱动链

    公开(公告)号:US4755163A

    公开(公告)日:1988-07-05

    申请号:US24413

    申请日:1987-03-11

    CPC分类号: F16G13/20 F16G5/18 F16H9/24

    摘要: A continuous push-drive chain formed by a plurality of blocks, each of the blocks having a letter V-shaped configuration in side elevation, defining large engagement surfaces relative to overall block size; and, structure for connecting adjacent blocks to one another disposed at one distal end of the V-shaped configuration, whereby large pushing forces between the blocks may be transmitted substantially unidirectionally and independently of the connecting structure, simultaneously increasing chain load capacity and reducing chain wear.

    摘要翻译: 由多个块形成的连续的推动传动链,每个块具有侧视图中的V字形构造,其相对于整体块尺寸限定了大的接合表面; 以及用于将相邻的块彼此连接设置在V形构造的一个远端处的结构,由此块之间的大的推力可以基本上单向地传播并且独立于连接结构,同时增加链承载力并减少链条磨损 。

    Process for manufacturing petroleum resin
    3.
    发明授权
    Process for manufacturing petroleum resin 失效
    制造石油树脂的工艺

    公开(公告)号:US5206358A

    公开(公告)日:1993-04-27

    申请号:US850270

    申请日:1992-03-12

    摘要: A process for manufacturing a petroleum resin is disclosed. The process comprises, polymerizing a petroleum fraction containing unsaturated hydrocarbons in the presence of Friedel-Crafts catalyst, and washing the polymerized product with water or an alkaline solution in the presence of 1-200 ppm of a polymer having a hydroxyl value of 40-120 mg KOH/g and represented by formula (I): ##STR1## wherein R.sub.1 represents a C.sub.4-16 alkyl group, each R.sub.2 individually represents H or a methyl group, each X individually represents H, an alkyl or an aminomethyl group, n is an integer of 0-8, and m is an integer of 8-20. The process can remarkably shorten the time required for the separation of oil from water after the polymerization, producing transparent, light-colored, petroleum resins with a low ash content.

    摘要翻译: 公开了一种石油树脂的制造方法。 该方法包括在Friedel-Crafts催化剂存在下聚合含有不饱和烃的石油馏分,并在1-200ppm羟基值为40-120的聚合物存在下用水或碱性溶液洗涤聚合产物 mg KOH / g,由式(I)表示:其中R1表示C4-16烷基,每个R2各自表示H或甲基,各X独立地表示H,烷基或 氨基甲基,n为0〜8的整数,m为8〜20的整数。 该方法可以显着缩短聚合后从水中分离油所需的时间,产生灰分低的透明,浅色石油树脂。

    Sintered oil-retaining bushed chain having roller
    4.
    发明授权
    Sintered oil-retaining bushed chain having roller 失效
    具有滚筒的烧结保油套管

    公开(公告)号:US4995852A

    公开(公告)日:1991-02-26

    申请号:US245326

    申请日:1988-09-14

    IPC分类号: F16G13/06

    CPC分类号: F16G13/06

    摘要: An improved chain comprising inner link plates, sintered oil-retaining bushings secured to the inner link plates, outer link plates, connecting pins secured to the outer link plates and the pins being rotatable within the bushings, the improvement comprising: the sintering density of the bushings being in the range of approximately 6.0 g/cm.sup.3 to 7.1 g/cm.sup.3 ; and, a roller rotatably supported on each bushing.

    摘要翻译: 一种改进的链条,包括内链板,固定到内链板上的烧结保油衬套,外链板,固定到外链板上的连接销和可在衬套内旋转的销,其改进包括: 衬套在约6.0g / cm 3至7.1g / cm 3的范围内; 以及可旋转地支撑在每个衬套上的辊。