Patents by Inventor David F. Stofleth

David F. Stofleth 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).

  • Patent number: 4687686
    Abstract: An apparatus and method is provided for regulating the climate in a spray booth. The spray booth comprises a chamber for housing articles during spray application of a coating material to the articles and an air circulation system for supplying either ambient air or recirculation air to the chamber. The chamber has an outlet for exhausting a contaminated mixture of chamber air and coating material overspray from the chamber. The spray booth further includes a liquid filter for washing the contaminated mixture exhausted through the chamber outlet to wash the coating material overspray out of the mixture. The air circulation system of the improved spray booth includes a system for controlling the temperature of the air supplied to the chamber to regulate the relative humidity of the air in the chamber.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: August 18, 1987
    Assignee: George Koch Sons, Inc.
    Inventors: David F. Stofleth, James H. Muehlbauer