Patents by Inventor D. T. Warner

D. T. Warner 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).

  • Lift truck
    Patent number: 4033471
    Abstract: The mast of a lift truck has upper and lower pinions cooperating with upper and lower racks respectively. The upper pinion has more teeth than the lower pinion for causing the mast to tilt and thereby compensate for the deflection effect of the load on the lifting arms.
    Type: Grant
    Filed: June 16, 1976
    Date of Patent: July 5, 1977
    Inventor: D. T. Warner