Patents by Inventor William A. MacPherson, III

William A. MacPherson, III 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).

  • Coupler for attachment of sampling tubes to duct detector
    Patent number: 7703344
    Abstract: A duct detector includes sampling tubes which slidably engage the detector with a fixed orientation to facilitate fluid flow. The tubes have a connector portion and a conduit portion. The connector portion and the conduit portion engage one another with a predetermined orientation.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: April 27, 2010
    Assignee: Honeywell International Inc.
    Inventors: William A. MacPherson, III, James M. Murphy
  • Ionization type smoke sensing chamber
    Patent number: 6953936
    Abstract: A modular smoke detector has a sensing electrode carried by an insulator module. The insulator module also carries an ionization source and a field effect transistor. The insulator module lockingly engages a printed circuit board. A conical smoke deflector and exterior electrode are assembled to the insulator module. The deflector and exterior electrode are spaced apart providing a space for inflow and outflow of airborne particles of combustion.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: October 11, 2005
    Assignee: Honeywell International, Inc.
    Inventors: William A. MacPherson, III, Gregory A. Wischstadt
  • Housing for a duct smoke detector
    Patent number: D568193
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: May 6, 2008
    Assignee: Honeywell International, Inc.
    Inventors: Lanny J. Frawley, Andrew A. Kuester, Zoltan Borbath, Maura D. Adamczyk, William A. Macpherson, III