Patents Assigned to Burch Company
  • Peristaltic pump having a variable effective radial length impeller for metering liquid chemicals
    Patent number: 6749410
    Abstract: A flexible apparatus for metering agricultural chemicals in a wet blade chemical distribution system consists of a modular peristaltic pump delivery apparatus (24) having an impeller (38) and a mounting bore (30) in a computer-controlled servomechanism that meters the correct amount of a wide variety of agricultural chemical regardless of equipment speed. It is especially well suited for easy field chemical change over and maintenance.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: June 15, 2004
    Assignee: Burch Company
    Inventor: Thomas B. Burch
  • Method and apparatus for simultaneously topping tobacco and controlling suckers with chemicals applied to cut stems by mechanical means
    Patent number: 6446420
    Abstract: A method and apparatus for simultaneously cutting and directing fluid into the stem of a tabacco plant, the apparatus including having a liquid delivery blade, a source of fluid communicating with to the underside of the blade, an associated power source for rotating the liquid delivery blade at a sufficiently high speed “top” tobacco plants.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: September 10, 2002
    Assignee: Burch Company
    Inventors: Arch Douglas Worsham, Thomas B. Burch
  • Container for dispensing fluid
    Patent number: D404950
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: February 2, 1999
    Assignee: Burch Company
    Inventor: Thomas B. Burch