Patents by Inventor Eric Sheeter

Eric Sheeter 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: 5322129
    Abstract: An array (1) of tools for use in planting in combination produce a variety of patterns of operation to provide a required density and pattern of plants. Each tool (6) is provided with an independent sensory/motor system (9) which moves the tool (6) independently with respect to the array (1). A controller (14) in response to a control signal positions the tool (6) automatically in a desired location. The control signal may be an environmental cue such as a region of illumination controlled by the user, or may be a signal generated by a neighboring tool.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: June 21, 1994
    Inventor: Eric Sheeter
  • Patent number: 5265546
    Abstract: Apparatus for planting seedlings, especially tree seedlings is described. A plant (32) is held in space (26) between two plates (23) and (24) whose lower edges are in mutual contact and form a cutting edge (25) which on downward movement penetrates the ground and an opening of its lower edges forms an excavation in which the plant is supported by means (33) and (34) while the plates are upwardly retracted.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: November 30, 1993
    Inventor: Eric Sheeter
  • Patent number: 5201910
    Abstract: A plant seedling handling apparatus is described which comprises a pair of parallel belts, each of which carries a series of grippers. During loading of the storage device each belt is fed from separate storage means via guide spools which create a nip between the belts. At the nip a pair of grippers 31, 34 grip a seedling stem 36. When the movement is reversed the seedling is released as the grippers separate as the belts pass around the guide spools 24 and 25. The seedling can be released direct to a planting device.
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: April 13, 1993
    Inventor: Eric Sheeter
  • Patent number: 4790400
    Abstract: A vehicle 1 comprises an upper mounting 2 which is a hollow beam pivotally attached via pivot means 4 to a lower mounting 3 which is also a hollow beam. A work platform 15 is fixed on to the upper mounting for translational movement with the mountings. Inner beams 5, 6, 10 and 11 are slidable within the outer beams 2 and 3 and have attached to each of their ends yokes, which in turn have attached at each of their ends legs 8 and 13. The legs have feet 9 and 14 and are telescopically extendible, so that the weight of the vehicle can be supported alternately on each set of legs i.e. on legs 8 or legs 13. By causing all the inner beams to slide in the outer beams simultaneously while the vehicle is supported on one set of legs and then transferring the weight to the other set of legs and causing the inner beams to slide in the opposite direction, the vehicle can "walk". The work platform can move forward continuously.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: December 13, 1988
    Inventor: Eric Sheeter