Patents by Inventor David Doskocil

David Doskocil 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).

  • Publication number: 20080093822
    Abstract: An open center trailer with spring suspended axels which straddle a detached cargo bed, which was loaded on the ground, said trailer level lifts the cargo bed by pulling said cargo bed up its channel ramps to an elevated transport height, and consequently level lowers and detaches from this load bed at another location. This load may be a cargo utility platform, or an enclosed cargo box, or a horse traveling compartment, or a dump bed, or a highway light, or a traffic speed sign.
    Type: Application
    Filed: December 11, 2007
    Publication date: April 24, 2008
    Inventor: David Doskocil
  • Publication number: 20050220591
    Abstract: An open center trailer with spring suspended axels which straddle a detached cargo bed, which was loaded on the ground, said trailer level lifts the cargo bed by pulling said cargo bed up its channel ramps to an elevated transport height, and consequently level lowers and detaches from this load bed at another location. This load may be a cargo utility platform, or an enclosed cargo box, or a horse traveling compartment, or a dump bed, or a highway light, or a traffic speed sign.
    Type: Application
    Filed: April 5, 2004
    Publication date: October 6, 2005
    Inventor: David Doskocil
  • Patent number: 5605291
    Abstract: A disc type chipper/mulcher having multi-blade flails in which two or more blades are attached to a sleeve, and the blade/sleeve combination pivots about a post as a single unit. The flails are sharpenable and reversible, and can be mounted on the same side of the disc as the knives. The chipper/mulcher may also include disc mounted fan blades and a screen for governing the size of the processed materials.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: February 25, 1997
    Inventor: David Doskocil
  • Patent number: 4958457
    Abstract: An apparatus for ditch digging or root pruning having a main frame on which a motor drive mechanism and a cutting wheel are supported. A secondary frame portion or undercarriage is pivotally attached to the main frame. The cutting wheel is preferably mounted on a transverse shaft parallel to the wheel axis, the cutting wheel rotating in a substantially vertical plane located outside the apparatus wheels. An actuation device is provided to pivot the frame portions thereby raising or lowering the cutting wheel.
    Type: Grant
    Filed: March 3, 1989
    Date of Patent: September 25, 1990
    Inventor: David Doskocil