Patents by Inventor Thomas R. Visser

Thomas R. Visser 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: 6178730
    Abstract: A fruit harvester includes a single shaker head having multiple, independently operable, shaker head segments freely rotatable about an axis of the head and moveable in a to and fro linear displacement. Each head segment includes a shaft and multiple finger elements radially extending from the shaft for penetrating fruit bearing branches of a tree. A shaker provides the radially linear displacement of the shaker head segment to and from the axis of the single shaker head. Adjacent shaker head segments are displaced in parallel and opposing directions for providing an oscillating movement to the finger elements, and thus a balance and stability to the shaker head during shaking movement of the tree branches. The shaker head is operable with a mobile carrier. A conveyor, also carried by the mobile carrier, is independently operable for receiving fruit falling from the tree and delivering the fruit onto a hauler.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: January 30, 2001
    Inventor: Thomas R. Visser
  • Patent number: 5421146
    Abstract: A mechanical fruit harvester employs a fruit-picking unit having plural, flexible probes which are extended into the foliage of the tree. Each probe has retractable fingers for separating the fruit from the stem. Each probe is significantly flexible, in order to avoid damage to the unit and to the tree being harvested. In one arrangement, the harvester is free-standing and has restricted dimensions, in order to permit movement about substantially all of an individual fruit tree among a plurality of densely-spaced fruit trees. The restricted-dimensioned arrangement employs hydraulic motor means for operating the drive, the probe extension and the probe elevation features.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: June 6, 1995
    Inventor: Thomas R. Visser