Patents by Inventor Lawrance N. Shaw

Lawrance N. Shaw 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: 5596938
    Abstract: An apparatus for unloading a tray full of seedlings and transporting them one at a time to another location for further handling, e.g., for planting. The apparatus is arranged to be towed behind a prime mover, and all operations are powered by the movement of the apparatus on wheels and/or by compressed air generated on the prime mover.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 28, 1997
    Inventor: Lawrance N. Shaw
  • Patent number: 4788920
    Abstract: A transplanter machine rotates seedling plants from a horizontal file to a vertical orientation by use of a plant holder which has a dwell when in a loading position. The plant holder will accelerate the seedling plants from a relatively low velocity to a velocity that is matched to the machine travel speed such that the plant is inserted into the ground at a zero velocity relative to the ground. The plant holders are mounted upon holder arms which are pivotably connected to a rotating hub. Each holder arm is connected to a link which causes the holder arm to fold and unfold as the plant holder travels in a path about a rotation axis.
    Type: Grant
    Filed: February 26, 1987
    Date of Patent: December 6, 1988
    Assignee: University of Florida
    Inventor: Lawrance N. Shaw
  • Patent number: 4703868
    Abstract: Apparatus for metering and dispensing seeds from a liquid or gel suspension of seeds includes a rotor having a plurality of orifices disposed within concave-shaped recesses about the peripheral surface of the rotor, each recess communicating with a bore of the rotor by a passageway. The rotor is supported within a recess in a housing by a stationary pintle having circumferentially extending grooves which are aligned with the radial passageways in the rotor, the grooves being connected to a pressure source and to a suction source so as to enable a suction to be applied to orifices located at a first region of the housing and a pressure to be applied to orifices located at a second region of the housing. The orifices located at the first region are exposed to the seed suspension, and the suction causes a seed from the suspension to be drawn to and held on the peripheral surface.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: November 3, 1987
    Assignee: University of Florida
    Inventor: Lawrance N. Shaw
  • Patent number: 4452288
    Abstract: An improved power bark hack including a motor of any suitable type which drives one end of an elongated connecting rod mounted in a co-extensive housing which also serves as the tool handle. The cutter is mounted at the free end of the connecting rod which extends out from the handle or housing. Bearing means, such as buttons made of Teflon which are easily replaced in use, are mounted in the end of the housing closely adjacent the end of the connecting rod carrying the cutting tool, whereby the rotary motion imparted by the motor to the drive end of the connecting rod is changed to substantially pure reciprocatory motion at the cutter blade end.
    Type: Grant
    Filed: February 23, 1982
    Date of Patent: June 5, 1984
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Lawrance N. Shaw
  • Patent number: 4261163
    Abstract: An apparatus for harvesting produce such as tomatoes and the like growing on plastic mulch covered beds without damage to the plastic mulch or to the fruits, and a method for such harvesting. A narrow reciprocating cutter is moved along the line of plants a short distance above the surface of the plastic film and maintained at the selected height by an automatic height control. A lifting device lifts pendant plant foliage and fruit clear of the plastic mulch surface and above the cutter. After cutting of the stem, a plant is engaged by a conveyor that carries it to the rear of the apparatus. A reel having flexible paddles urges the plants onto the conveyor. The plastic mulch and associated irrigation tubing is not disturbed and other crops may be planted without replacement of the plastic. The apparatus may be pulled and powered from a high clearance tractor in which instance the plants are redeposited on the bed surface for wilting.
    Type: Grant
    Filed: April 30, 1979
    Date of Patent: April 14, 1981
    Inventor: Lawrance N. Shaw