Patents by Inventor Michel Liekens

Michel Liekens 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).

  • Method and apparatus for attaching an insert in a hollow body
    Patent number: 4994132
    Abstract: A method and apparatus for attaching an insert in an opening in a molded thermoplastic body. The insert includes a thermoplastic mounting portion which is fused with the thermoplastic material of the body. The insert is maintained in a spaed position from the opening during the heating portion of the molding cycle and positioned within the opening while the thermoplastic material is still sufficiently hot to fuse with the thermoplastic mounting portion of the insert.
    Type: Grant
    Filed: February 13, 1990
    Date of Patent: February 19, 1991
    Assignee: Essef Corporation
    Inventors: Michel Liekens, Edward T. LeBreton, Arthur M. Kepler