Patents by Inventor Leo A. Hopp

Leo A. Hopp 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).

  • 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