Patents by Inventor Harold E. Ramsey

Harold E. Ramsey 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).

  • Shrink-wrapping apparatus and method
    Patent number: 4947605
    Abstract: There is disclosed an apparatus for forming a shrink-wrapped package from polyolefin film which overcomes the problems of forming the bottom lap seal of the tubular package formed from the film and initial low strength of the heat seal at the forward end of the package, by positioning the static sealer for the bottom lap seal upstream from the heat sealer for the forward end of the package and by using a ram to move packages into the tubular package but to stop them short of the heat seal at the forward end of the package.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: August 14, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harold E. Ramsey
  • Heat sealing film cut-off device
    Patent number: 4433527
    Abstract: A heat sealing and cut-off device for making packages with shrink film wrapping. The device includes a rotating anvil and a counter-rotating knife and clamping bars. The rotations are synchronous and independently mounted clamping bars hold the film for heat sealing and severing without scuffing.
    Type: Grant
    Filed: August 19, 1981
    Date of Patent: February 28, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Harold E. Ramsey, Edward E. Fischer