Patents Assigned to Eisenwerke Fried. Wilh. Dueker GmbH & Co.
  • Patent number: 5297824
    Abstract: The spigot-and-socket joint which is secured against sliding is designated for moulded parts and for socket pipes (1) produced by the centrifugal casting technique, with the spigot end (3) of the one pipe adapted to be slid, with radial play, into the socket end (2) of the other pipe. In the socket end there are arranged a sealing ring (8) and a separate clamping ring (14) comprising a plurality of circumferentially extending, spaced clamping segments (15) having a spherically convex outer surface (17) and, on their inner surface (18), a tooth system (19) which, in the presence of axial forces, presses radially onto the spigot end (3) as the spherically convex surface (17) cooperates with a pipe socket's inner surface (18) which tapers conically towards the end. An elastomer support member (20), which can be fixed in its position at the socket face end and supports the same, is provided on the clamping ring (14).
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: March 29, 1994
    Assignee: Eisenwerke Fried. Wilh. Dueker GmbH & Co.
    Inventors: Erich Imhof, Karl-Heinz Bergmann, Manfred Vorbeck