Patents by Inventor JOHN H. BUCHANAN, III

JOHN H. BUCHANAN, 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).

  • Apparatus for detecting particles
    Patent number: 9239405
    Abstract: A particle detection system is provided, including a sensing chamber having an inlet nozzle, an outlet nozzle, and an interrogation zone defined therebetween. Particles in a sampled environmental gas are prevented from escaping the interrogation zone by pressurizing the sensing chamber such that the pressure therein is higher than that in the outlet nozzle. This is accomplished by providing a source of extra gas to the sensing chamber, for example, by diverting gas from an inlet flow path directly to the sensing chamber.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 19, 2016
    Assignee: AZBIL CORPORATION
    Inventors: John H. Buchanan, III, Hisaya Murakami
  • APPARATUS FOR DETECTING PARTICLES
    Publication number: 20130248693
    Abstract: A particle detection system is provided, including a sensing chamber having an inlet nozzle, an outlet nozzle, and an interrogation zone defined therebetween. Particles in a sampled environmental gas are prevented from escaping the interrogation zone by pressurizing the sensing chamber such that the pressure therein is higher than that in the outlet nozzle. This is accomplished by providing a source of extra gas to the sensing chamber, for example, by diverting gas from an inlet flow path directly to the sensing chamber.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 26, 2013
    Inventors: JOHN H. BUCHANAN, III, Hisaya Murakami