Patents by Inventor Dave Forman

Dave Forman 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).

  • Process for reclaiming gravel, soil particles, and wood pieces from a mixture of the same
    Patent number: 5240114
    Abstract: A mixture of rock, soil particles and wood pieces (10') is introduced into a water tank (34) generally between a manifold (64) for a plurality of jet nozzles (62) and a vane or baffle (66) towards which the nozzles (62) discharge streams of water. Buoyant and nonbuoyant wood pieces (14) are moved by currents produced by jet streams issuing from the nozzles (62) towards and over the baffle (66) onto a wood piece conveyor (150) which removes the wood pieces (14) out from the water tank (34). Rocks (16) from the mixture drop down onto a rock receiving portion (82) of a rock conveyor (82, 84) which collects the rock (14) and removes it out from the water tank (34). Soil particles (18) from the mixture are washed off from the rock (16) and wood pieces (14) and settle to the bottom of the tank (34). A drag chain conveyor (160) moves accumulated soil particle mud out from the bottom of the chamber (34).
    Type: Grant
    Filed: November 14, 1991
    Date of Patent: August 31, 1993
    Inventors: Jim L. Parker, Dave Forman
  • Apparatus for reclaiming gravel, soil particles and wood pieces from a mixture of the same
    Patent number: 5110454
    Abstract: A mixture of rock, soil particles and wood pieces (10') is introduced into a water tank (34) generally between a manifold (64) for a plurality of jet nozzles (62) and a vane or baffle (66) towards which the nozzles (62) discharge streams of water. Buoyant and nonbuoyant wood pieces (14) are moved by currents produced by jet streams issuing from the nozzles (62) towards and over the baffle (66) onto a wood piece conveyor (150) which removes the wood pieces (14) out from the water tank (34). Rocks (16) from the mixture drop down onto a rock receiving portion (82) of a rock conveyor (82, 84) which collects the rock (14) and removes it out from the water tank (34). Soil particles (18) from the mixture are washed off from the rock (16) and wood pieces (14) and settle to the bottom of the tank (34). A drag chain conveyor (160) moves accumulated soil particle mud out from the bottom of the chamber (34).
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: May 5, 1992
    Assignee: Recovery Systems Technology, Inc.
    Inventors: Jim L. Parker, Dave Forman