Patents by Inventor Donnie L. Nieman

Donnie L. Nieman 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).

  • Pneumatic suspension system for farm equipment
    Patent number: 5409075
    Abstract: A suspension system for tracked vehicles has a plurality of interconnected air bags that is used to more evenly distribute the weight of the vehicle superstructure over the belt track. The more even weight distribution improves floatation of the vehicle over the ground, and reduces instability and wear of the superstructure. A tensioner with a pressurized air bag can be used to increase the tension on the belt track during vehicle operation. The pressure in the tensioner air bag can be reduced to ease the tension on the belt track for efficient servicing.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: April 25, 1995
    Inventor: Donnie L. Nieman