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    • 21. 发明授权
    • Joint construction with sealing gasket for joints with plastic or other
pipes
    • US3998478A
    • 1976-12-21
    • US496371
    • 1974-08-30
    • William L. Zopfi
    • William L. Zopfi
    • F16L17/025F16L21/03F16L47/08F16L49/02F16L17/02
    • F16L21/03F16L17/025F16L47/08F16L49/02
    • A sealing joint construction with gasket for joints especially in or with plastic pipes, such as electrical or telephone conduit pipes, drainage or sewer conduit pipes, either bell-and-plain-spigot type pipe or plain end pipe connected by a coupling fitting or pipe and other drainage fittings, characterized by use of a smooth non-grooved, non-ribbed spigot male and bell-like female joined element ends telescoped in bell-and-spigot fashion, the female end being double-belled to receive snugly the innermost spigot end and outwardly thereof to define an annular recess of narrow gap or width and of considerable axial depth, and, inserted in the recess, a limp, pliable, endless, i.e. closed or annular, unitary, thin ribbon form gasket made of smooth surfaced polyvinyl chloride or the like; the gasket comprising a thin sleeve-like body externally smooth and having a set of axially spaced, integral pliable internal annularly continuous sealing and gripping fins or ribs, and on the outer gasket end, a circumferentially continuous external radial flange to engage the bell end; the gasket having a spigot lead-in internal bevel at its outer end or mouth, and one heavy rib occurring at the gasket inner end; in the gasket free state, the radial thickness of the ribs plus body being greater than the recess gap; those other than the inner end rib preferably being of shape and thickness to be more readily compressed and deflected, when located in the bell, by the entering spigot end than the inner end rib; with the smooth cylindrical gasket exterior and bell interior enabling the spigot end, in encountering the successive ribs, axially to stretch, and thereby radially thin, the gasket, and for the added ease of insertion upon encountering the innermost rib finally before complete spigot insertion, axially to stretch the gasket over its length, as permitted by the recess depth exceeding the gasket inserted length, whereby seal is achieved upon spigot insertion past the inner rib and relief of gasket stretch.
    • 23. 发明授权
    • Pipe coupling device
    • 管接头装置
    • US3653688A
    • 1972-04-04
    • US3653688D
    • 1970-04-22
    • AKIRA SAKAKIBARA
    • SAKAKIBARA AKIRA
    • F16L17/025F16L19/075F16L19/08F16L21/02F16L27/08F16L17/00
    • F16L21/022F16L17/025F16L19/075F16L19/08F16L27/08Y10T403/5721Y10T403/7054
    • A device for coupling or decoupling pipe sections including two hollow cylindrical members each having a tapered inner surface portion and adapted to receive a pipe section. Several metallic balls are disposed between the tapered inner surface portion and a portion of the outer surface of the pipe section for acting as wedge means to prevent separation of the cylindrical member and the pipe section. Sealing means are located between the cylindrical member and its associated pipe section for providing an air-tight seal between the two. Fastening means are disposed between the hollow cylindrical members for moving the hollow members toward each other and for urging the sealing means against the inner surface of the hollow cylindrical members and the outer surface of the pipe sections to be joined.
    • 一种用于联接或去耦合管段的装置,包括两个中空圆柱形构件,每个中空圆柱形构件具有锥形内表面部分并且适于容纳管段。 几个金属球设置在锥形内表面部分和管部分的外表面的一部分之间,用作楔形装置以防止圆柱形部件和管部分分离。 密封装置位于圆柱形构件和其相关管段之间,用于在两者之间提供气密密封。 紧固装置设置在用于将中空构件朝向彼此移动的中空圆柱形构件之间,并且用于将密封装置推压到中空圆柱形构件的内表面和要接合的管段的外表面。