Patents by Inventor Bent J. Hansen

Bent J. Hansen 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).

  • Clamping apparatus for plastic pipe
    Patent number: 4445677
    Abstract: An apparatus for clamping a plastic fitting against a plastic pipe and for holding them together with a predetermined clamping force includes a carriage and guide means for guiding the carriage in vertical motion above a fixed pipe support portion. A frame portion is fixed with respect to the pipe support portion, and first and second toggle links are pivoted to the carriage, to the frame portion and to each other in such a way that the links can achieve an aligned position in which the carriage is in its lowermost location. A mechanical interference means is provided to prevent the toggle links from going significantly past the dead center position represented by the alignment. Means are connected to the carriage for holding the plastic fitting, and lever means are provided for rotating one of the toggle links.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: May 1, 1984
    Assignee: Cliffside Pipelayers
    Inventors: Bent J. Hansen, Clifford F. Thompson