Patents by Inventor Ben C. Maines

Ben C. Maines 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: 5964476
    Abstract: A shock absorbing fifth wheel which absorbs transmitted shocks between two vehicles. A plurality of springs absorbs directional shocks, and a plurality of roller bearings carries vertical (gravity) and side (lateral) loads so that the shock absorbing quality is not compromised by dirt, dust or grit between bearing surfaces. The apparatus may be adjusted readily by the user or manufacturer for varying loads and shock absorbing qualities.
    Type: Grant
    Filed: March 16, 1999
    Date of Patent: October 12, 1999
    Inventor: Ben C. Maines
  • Patent number: 5421599
    Abstract: The invention discloses a telescoping shock absorbing apparatus which uses a pair of square tubular members with a rod disposed interiorly and axially within one of the members for transmitting towing force. Two springs are disposed over and connected to the rod and square members to absorb shock resulting from differential movement that would otherwise be transmitted between the two vehicles. The towing vehicle experiences hardly any shock through the connection to a towed vehicle, substantially improving the operating conditions for both vehicles. The disclosure shows how this apparatus may be used on various conventional tow bars and shows how existing folding tow couplers can be improved through the use of the apparatus.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: June 6, 1995
    Inventor: Ben C. Maines