Patents by Inventor James K. Dummer

James K. Dummer 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).

  • Three wheeled cart for gas cylinders
    Patent number: 6224071
    Abstract: A three wheeled cart is equipped with an inclined gas cylinder holding rack, which is configured to accept a set of two such cylinders, and a towing drawbar, pivotally connected for vertical movement, is connected to the steerable front wheel. The cart is tipped up to reorient the cylinder holding rack vertically, in which position the drawbar length contacts the ground to act as a prop, supporting the cart in the reoriented attitude so as to facilitate the transfer of standing gas cylinders into the vertically positioned cylinder holding rack.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: May 1, 2001
    Inventor: James K. Dummer