Patents by Inventor Adriaan Paulen

Adriaan Paulen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Coupling sleeve for connection of a branch pipe to a main pipe
    Patent number: 5150928
    Abstract: The connecting end on a coupling sleeve has an annular flange which may be hoved to urge compression stress to an annular deformable sealing ring to establish a seal between the main pipe and coupling sleeve. A stop part flange is positioned to one side of a sealing couple and which may assume a fixed position relative to the wall of the main pipe against which the stop part rests. Pivoted link stretching elements on the coupling sleeve move the insertion end of the branch pipe outwards relative to the wall of the main pipe and provides structure for exerting a compression stress against the resilient sealing ring to effect a seal between the coupling and main pipe.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: September 29, 1992
    Assignee: Wavin B.V.
    Inventors: Bernhard Lodder, Berend J. van Dijk, Adriaan Paulen, Albertus A. Oostenbrink