Patents by Inventor Harvey E. Durham

Harvey E. Durham 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: 4116349
    Abstract: A load clamping and stabilizing device for attachment to the fork mounting carriage of a fork lift truck so that the device is elevated with the carriage as it moves in its upright lift frame, the device including guide rail members spaced transversely of the truck and attached to the carriage and including slide members telescopically supported by the guide rail members and power driven up and down by force-limited motor driven rack and pinion actuating means, and the slide members supporting a load clamping frame extending forwardly therefrom and overlying the lift forks and having a yieldable load engaging web supported in the clamping frame for descending onto a load and shaping itself over the top of the load and gripping it to clamp and stabilize the load.
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: September 26, 1978
    Inventor: Harvey E. Durham
  • Patent number: 3986782
    Abstract: A towed roller for compacting asphalt, earth, etc., including a frame in which a roller drum is journaled, the frame having a forwardly extending drawbar positionable transversely with respect to the frame by hydraulic means to provide an offset in the towed position of the roller, and the frame carrying a transverse shaft which supports at its outer ends rearwardly-extending arms carrying ground-engaging transport wheels, the arms being positionable by hydraulic means to occupy a lowered transport position or to occupy a raised storage position, and drum sprinkler means coupled to be enabled or disabled automatically depending upon the position which the arms carrying the ground engaging wheels presently occupy.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: October 19, 1976
    Inventor: Harvey E. Durham