Patents by Inventor Mack Robert Fields

Mack Robert Fields 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: 4098418
    Abstract: A safety closure is provided for a container which container has a continuous upwardly extending neck and a continuous radially outwardly extending flange spaced from the outer edge of said neck. The closure is provided with a portion for seating against the inside of the neck and has a flared skirt which terminates either within or substantially even with the outer edge of the flange. The skirt is made of a pliable material and is reinforced against the neck of the container except for two closely spaced segments of the skirt. The spacing between the segments is supported against the neck of the container so that depressing the two segments will bulge the skirt between the segments outward beyond the confines of the flange whereby upward pressure below the bulged portion will strip the closure from the container.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: July 4, 1978
    Inventor: Mack Robert Fields