Patents by Inventor Carlos G. Holland

Carlos G. Holland 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).

  • Positive displacement pump having piston and/or liner with vapor deposited polymer surface
    Publication number: 20040241023
    Abstract: A metering pump for providing relatively small, precise volumes of fluid is provided. The pump piston and/or the interior of the cylinder has a surface finish exhibiting a roughness average within selected limits and a vapor deposited polymer such as polytetrafluoroethylene. A drive mechanism is provided for simultaneously rotating and reciprocating the piston within a cylindrical chamber. Fluid is thereby drawn into the chamber and expelled.
    Type: Application
    Filed: May 27, 2003
    Publication date: December 2, 2004
    Inventors: Harry E. Pinkerton, Carlos G. Holland