Patents by Inventor David P. Chassin

David P. Chassin 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).

  • Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices
    Publication number: 20040254688
    Abstract: Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices are described. In one aspect, an electrical power distribution control method includes providing electrical energy from an electrical power distribution system, applying the electrical energy to a load, providing a plurality of different values for a threshold at a plurality of moments in time and corresponding to an electrical characteristic of the electrical energy, and adjusting an amount of the electrical energy applied to the load responsive to an electrical characteristic of the electrical energy triggering one of the values of the threshold at the respective moment in time.
    Type: Application
    Filed: June 13, 2003
    Publication date: December 16, 2004
    Inventors: David P. Chassin, Matthew K. Donnelly, Jeffery E. Dagle
  • Rooftop package unit diagnostician
    Patent number: 6778945
    Abstract: A diagnostic system for an HVAC system includes a number of sensors used to measure the operation of the HVAC system. Sensor readings are measured by timing the delay between when a strobe signal is sent to a sensor and when an interrupt signal from the sensor is received. A device driver used to measure the sensor readings stores the sensor readings in pseudo-character device files, which are universally accessible by different subsystems of the diagnostic system. Based on the readings from these sensors, this diagnostic system is able to determine the operational status of the HVAC system and if an economizer in the HVAC system is operating properly.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: August 17, 2004
    Assignee: Battelle Memorial Institute
    Inventors: David P. Chassin, Robert G. Pratt, Larry Dean Reid
  • Rooftop package unit diagnostician
    Publication number: 20030110001
    Abstract: A diagnostic system for an HVAC system includes a number of sensors used to measure the operation of the HVAC system. Sensor readings are measured by timing the delay between when a strobe signal is sent to a sensor and when an interrupt signal from the sensor is received. A device driver used to measure the sensor readings stores the sensor readings in pseudo-character device files, which are universally accessible by different subsystems of the diagnostic system. Based on the readings from these sensors, this diagnostic system is able to determine the operational status of the HVAC system and if an economizer in the HVAC system is operating properly.
    Type: Application
    Filed: December 12, 2001
    Publication date: June 12, 2003
    Inventors: David P. Chassin, Robert G. Pratt, Larry Dean Reid