Patents by Inventor Marvin L. Meyers

Marvin L. Meyers 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 injection molded a plastic part with a round tubular portion
    Patent number: 4873043
    Abstract: A process for forming a plastic part having a tubular portion that is continuous and without an flash/mismatch due to mold parting lines in which an injection mold is provided having a cavity formed with a cylindrical surface portion and a core member removably inserted endwise into the cylindrical portion. A molten plastic material is injected into the cavity so that it extends into the cylindrical portion and around the core member. The core member is then withdrawn in an axial direction from the cylindrical portion after the plastic material therein has solidified enough to retain its tubular shape but before it has completely to thereby enable the plastic material to shrink radially inwardly away from the cylindrical surface.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: October 10, 1989
    Assignee: Hoover Universal, Inc.
    Inventor: Marvin L. Meyers