Patents by Inventor Keith E. Lauritsen

Keith E. Lauritsen 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).

  • Patent number: 4676944
    Abstract: The mold described herein comprises an upper and a lower portion in which the upper portion comprises an inverted cavity flash land mold section and the lower portion comprises a readily removable steel plate. By having the cavity flash land mold portion inverted and in the upper portion of the mold, the molded product is more easily separable by gravity from this upper mold portion which avoids the necessity to use means for lifting the molded product from the cavity and thereby avoids the distortions and stresses previously caused in the product by such lifting means. To aid in separating the product from the inverted cavity upper portion as the upper portion is separated from the lower flat sheet portion of the mold, releasing means, such as air from poppet valves in the upper area of the cavity mold, may be used to facilitate separation of the product from the upper cavity portion and deposition of this product on the lower flat sheet portion of the mold.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: June 30, 1987
    Assignee: Plastics Engineering Company
    Inventors: Louis L. Korb, Keith E. Lauritsen