Patents by Inventor Robert Zorn

Robert Zorn 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).

  • Apparatus for forming the stitch forming area of a sewing machine throat plate
    Patent number: 4594876
    Abstract: This invention relates to a cold forming process wherein a consistent stitch tongue profile is swaged into a planar throat plate blank. Thereafter, excess material resulting from the cold forming process is removed and the required needle holes and thread slots are provided in the blank.
    Type: Grant
    Filed: June 1, 1984
    Date of Patent: June 17, 1986
    Assignee: Union Special Corporation
    Inventors: Robert Zorn, David Dispennett
  • Method for forming the stitch forming area of a sewing machine throat plate
    Patent number: 4430878
    Abstract: This invention relates to a cold forming process wherein a consistent stitch tongue profile is swaged into a planar throat plate blank. Thereafter, excess material resulting from the cold forming process is removed and the required needle holes and thread slots are provided in the blank.
    Type: Grant
    Filed: October 26, 1981
    Date of Patent: February 14, 1984
    Assignee: Union Special Corporation
    Inventors: David Dispennett, Robert Zorn