Patents by Inventor Larry F. Randall

Larry F. Randall 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).

  • Appliance for disinfection of HVAC systems
    Patent number: 7421851
    Abstract: An application and method for disinfecting HVAC systems that includes features for protecting service personnel from unintended exposure to ultraviolet radiation. The safeguards include an interlock that prevents illumination of germicidal lamps when their enclosure case is not properly attached to a duct.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: September 9, 2008
    Assignee: UltraViolet Devices, Inc.
    Inventors: David L. Witham, Thomas M. Veloz, Thomas C. Bowles, Roberto Arance, Keith Crawford, Jon W. Orr, Richard N. Metzger, Larry F. Randall
  • Appliance for disinfection of HVAC systems
    Patent number: 7107778
    Abstract: A device (20) for Disinfection of HVAC Systems that include features that will protect service personnel from un-intended exposure to ultra violet radiation. The safeguards include an interlock (70) that prevents illumination of germicidal lamps (80) when an enclosure within which the germicidal lamps (80) are mounted is not properly attached to a duct or appliance; the apparatus further provides for innovative methods for determining that the germicidal lamps (80) are operating.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: September 19, 2006
    Inventors: David L. Witham, Thomas M. Veloz, Thomas C. Bowles, Roberto Arance, Keith Crawford, Jon W. Orr, Richard N. Metzger, Larry F. Randall