Patents by Inventor Otho A. Clark

Otho A. Clark 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).

  • Sprayer trailer, tillage implement and hitch for attaching implement to trailer
    Patent number: 4433735
    Abstract: An implement hitch has a cultivator carrier mounted on a sprayer trailer by a four point linkage actuated by a hydraulic cylinder to raise and lower a standard rigidly connected to the cultivator, there being a quick attach, three point pin-hook coupling between the carrier and the standard.
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: February 28, 1984
    Inventor: Otho A. Clark
  • Support for sprayer booms
    Patent number: 4106700
    Abstract: A sprayer having an articulated boom is provided with a pair of shock absorbing structures mounted between the sprayer frame and the main section of the boom in such a manner that the main section is limited to dampened, rectilinear reciprocation relative to the frame. Each structure has a quick release mounting for permitting the boom to be easily removed from the sprayer and for facilitating adjustment of the nominal spacing between the ground and the boom.
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: August 15, 1978
    Inventor: Otho A. Clark
  • Crop spraying trailer
    Patent number: D257979
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: January 20, 1981
    Inventors: Otho A. Clark, Ralph V. Pearson