Patents by Inventor Robert J. Walla

Robert J. Walla 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: 5419569
    Abstract: A hand truck for fire fighting stores and transports SCBA air bottles. The highly stable hand truck is designed for efficient manipulation by one or two firefighters. It readily traverses obstructed areas, inclined stair cases and the like. The frame comprises a pair of rigid, spaced apart side rails extending between a lower, load-supporting toe-plate and an upper handle. Vertically spaced apart cross bars reinforce the frame. Dolly wheels are mounted adjacent stair climbers, thus enabling passage of the hand truck up and down stairways, over curbs and fire hoses and other obstacles. A container stores accessories. A retractable support system stabilizes the hand truck and enables it to assume an inclined, horizontal orientation for loading and unloading. Frame rail runways with outer rubber liners frictionally contact the air bottles. Bottles are confined within a transportation zone of generally triangular dimensions.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: May 30, 1995
    Inventor: Robert J. Walla