Patents Assigned to Column Corporation
  • General purpose compression-type sprayer
    Patent number: 4204645
    Abstract: A compression-type spray device employing a single nozzle can be used to spray materials varying widely in density, composition and particle size. The device incorporates an air-and-material mix control using variably exposed slots in the nozzle to regulate the flow of high-pressure air through the nozzle, and a material supply control using variable restrictions in the material supply tube inlet to regulate the flow of material to the nozzle.
    Type: Grant
    Filed: May 17, 1978
    Date of Patent: May 27, 1980
    Assignee: Column Corporation
    Inventor: Leo A. Hopp
  • General purpose compression-type sprayer
    Patent number: RE30993
    Abstract: A compression-type spray device employing a single nozzle can be used to spray materials varying widely in density, composition and particle size. The device incorporates an air-and-material mix control using variably exposed slots in the nozzle to regulate the flow of high-pressure air through the nozzle.[., and a.]..Iadd.. A .Iaddend.material supply control .[.using.]. .Iadd.having .Iaddend.variable restrictions .Iadd.may be provided .Iaddend.in the material supply tube inlet to regulate the flow of material to the nozzle.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: July 13, 1982
    Assignee: Column Corporation
    Inventor: Leo A. Hopp