Patents Assigned to Arthur K. Thatcher Revokable Trust
  • Sonic dispersion unit and control system therefor
    Patent number: 4520786
    Abstract: The sonic dispersion system includes a sonic dispersion unit (18) mounted upon a mounting assembly (100,102) and having an active surface (116) with a central apex (120) positioned in spaced relationship to the mounting assembly. Material directing units (92,94) direct material against the active surface so that the material is redirected thereby toward the apex. The sonic dispersion unit (18) may be used in combination with a control system (10) which controls the amount of material provided from two separate material sources (14,34).
    Type: Grant
    Filed: February 23, 1982
    Date of Patent: June 4, 1985
    Assignee: Arthur K. Thatcher Revokable Trust
    Inventors: Arthur K. Thatcher, Ed R. McCarter, deceased