Patents by Inventor Kelvyn I. MacDonald

Kelvyn I. MacDonald 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: 4143767
    Abstract: A tire patch is removably affixed to the front surface of a backing sheet in an area defined by a broken line extending intermediate and parallel to the top and bottom edges of the sheet and the bottom edge thereof. A sheet of abrasive material is removably affixed to the tire patch. A sealed container of liquid cement for affixing a tire patch to a tire is affixed to the front surface of the sheet in the area defined by the broken line and the top edge of the sheet and has a narrow neck just crossing the broken line whereby when the backing sheet is cut along the broken line the neck is opened and the cement is available for use.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: March 13, 1979
    Inventor: Kelvyn I. MacDonald