Patents by Inventor Manfred Valentin

Manfred Valentin 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 of and apparatus for welding mitered mating surfaces of frame sections
    Patent number: 6129805
    Abstract: A method of welding mitered surfaces of frame sections made of plastic material and having incorporated therein a seal of weldable material extending along the frame sections and composed of an attachment foot and at least a sealing lip, for use in windows or doors, includes the steps of heat-welding mitered surfaces and adjoining frame section zones by means of a heated mirror while covering during welding operation an inner contour of the seal by at least one form-part that is positioned in and neighboring the miter plane and has a contour which substantially complements the inner contour of the seal. Subsequently, after removing the heated mirror from the miter corner and withdrawing the form-part the area of the seal, the mitered surfaces of the frame section are squeezed together.
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: October 10, 2000
    Assignee: Schuco International KG
    Inventor: Manfred Valentin
  • Method of and apparatus for welding mitered mating surfaces of frame sections
    Patent number: 5938888
    Abstract: A method of welding mitered surfaces of frame sections made of plastic material and having incorporated therein a seal of weldable material extending along the frame sections and composed of an attachment foot and at least a sealing lip, for use in windows or doors, includes the steps of heat-welding mitered surfaces and adjoining frame section zones by means of a heated mirror while covering during welding operation an inner contour of the seal by at least one form-part that is positioned in and neighboring the miter plane and has a contour which substantially complements the inner contour of the seal. Subsequently, after removing the heated mirror from the miter corner and withdrawing the form-part the area of the seal, the mitered surfaces of the frame section are squeezed together.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: August 17, 1999
    Assignee: Schuco International KG
    Inventor: Manfred Valentin