Patents by Inventor Otto Theodore Bentrup

Otto Theodore Bentrup 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).

  • Fire extinguisher system using liquid-ballast tires
    Patent number: 4062407
    Abstract: A fire extinguisher system using liquid-ballast tires of a vehicle, such as a tractor or log skidder. The tire has a fire retardant liquid, and it may be water, and it has several valves spaced therearound. A gas supply can be attached to one of the valves to force the liquid from the tire, and a hose can be attached to another one of the valves for directing the evacuating liquid from the tire and toward the fire.
    Type: Grant
    Filed: July 26, 1976
    Date of Patent: December 13, 1977
    Assignee: J. I. Case Company
    Inventor: Otto Theodore Bentrup