Patents by Inventor John N. Hoffman

John N. Hoffman 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: 4880266
    Abstract: An improved ash tray for use in vehicles having armrests with "fire boxes" therein which are covered by escutheons provided with detents for resiliently retaining the ash tray therein and which detents have become bent or damaged; said ash tray comprising a receptacle portion, a cover portion, and a generally U-shaped insert member, formed of spring steel or the like, having a crosspiece having a pair of resilient legs extending outward and downward from the upper edge of the crosspiece adjacent respective ends thereof. The U-shaped insert member is clamped between the cover portion and the rim of the receptacle portion so that the crosspiece lies within the receptacle, while the legs lie outside of the receptacle portion in position to engage the edge of the escutcheon opening and to resiliently retain the ash tray in position.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: November 14, 1989
    Inventors: John N. Hoffman, Bruce J. Greenbaum