Patents by Inventor John S. Haefner

John S. Haefner 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: 10684013
    Abstract: A power generation system for use with a gas fired appliance including a main burner and a gas supply line includes a pilot burner assembly for igniting gas supplied to the main burner and a controller. The pilot burner assembly includes a thermo-electric device configured to convert thermal energy into electrical energy, and a pilot guard. The pilot guard has a first end defining a gas inlet and a second end defining a gas outlet. The controller is configured to receive a signal from the thermo-electric device, and control the supply of gas to the main burner based on the signal. The controller is powered by electrical energy generated by the thermo-electric device. The thermo-electric device has an internal resistance matched to a load resistance of the controller to facilitate maximum power transfer between the thermo-electric device and the controller.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: June 16, 2020
    Assignee: Emerson Electric Co.
    Inventors: James B. Prichard, Mark H. Stark, Soraya C. Mendoza, Arturo U. Olague, Jorge D. Viesca, John S. Haefner
  • Patent number: 10488044
    Abstract: A method of assembling a pilot burner assembly for use with a gas fired appliance includes inserting a retention element of a gas supply line through a slot defined by a retaining ledge of a second bracket plate, rotating an outlet orifice of the gas supply line such that the second retention element engages the retaining ledge, and inserting a pilot guard through first and second pilot guard apertures defined by respective first and second bracket plates such that a retention element of the pilot guard cooperatively engages the retention element of the gas supply line to maintain a connection between the pilot guard and the gas supply line.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: November 26, 2019
    Assignee: Emerson Electric Co.
    Inventors: James B. Prichard, Mark H. Stark, Soraya C. Mendoza, Arturo U. Olague, Jorge D. Viesca, John S. Haefner
  • Patent number: 10151484
    Abstract: A pilot burner assembly includes a bracket, a thermo-electric device configured to be connected to the bracket, and a unitary pilot guard. The bracket includes a first plate and a second plate spaced from the first plate. Each of the first and second plates have a pilot guard aperture defined therein. The pilot guard has a first end defining a gas inlet configured to receive a gas supply line, and a second end defining a gas outlet. The pilot guard includes an elongate body and a pilot hood disposed at the second end, and is configured be inserted into the pilot guard apertures. The pilot guard further includes a first retention element configured to cooperate with a second retention element on the gas supply line to maintain a connection between the pilot guard and the gas supply line.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: December 11, 2018
    Assignee: Emerson Electric Co.
    Inventors: James B. Prichard, Mark H. Stark, Soraya C. Mendoza, Arturo U. Olague, Jorge D. Viesca, John S. Haefner
  • Publication number: 20180135857
    Abstract: A power generation system for use with a gas fired appliance including a main burner and a gas supply line includes a pilot burner assembly for igniting gas supplied to the main burner and a controller. The pilot burner assembly includes a thermo-electric device configured to convert thermal energy into electrical energy, and a pilot guard. The pilot guard has a first end defining a gas inlet and a second end defining a gas outlet. The controller is configured to receive a signal from the thermo-electric device, and control the supply of gas to the main burner based on the signal. The controller is powered by electrical energy generated by the thermo-electric device. The thermo-electric device has an internal resistance matched to a load resistance of the controller to facilitate maximum power transfer between the thermo-electric device and the controller.
    Type: Application
    Filed: January 12, 2018
    Publication date: May 17, 2018
    Inventors: James B. Prichard, Mark H. Stark, Soraya C. Mendoza, Arturo U. Olague, Jorge D. Viesca, John S. Haefner
  • Publication number: 20180135858
    Abstract: A method of assembling a pilot burner assembly for use with a gas fired appliance includes inserting a retention element of a gas supply line through a slot defined by a retaining ledge of a second bracket plate, rotating an outlet orifice of the gas supply line such that the second retention element engages the retaining ledge, and inserting a pilot guard through first and second pilot guard apertures defined by respective first and second bracket plates such that a retention element of the pilot guard cooperatively engages the retention element of the gas supply line to maintain a connection between the pilot guard and the gas supply line.
    Type: Application
    Filed: January 12, 2018
    Publication date: May 17, 2018
    Inventors: James B. Prichard, Mark H. Stark, Soraya C. Mendoza, Arturo U. Olague, Jorge D. Viesca, John S. Haefner
  • Publication number: 20150316264
    Abstract: A pilot burner assembly includes a bracket, a thermo-electric device configured to be connected to the bracket, and a unitary pilot guard. The bracket includes a first plate and a second plate spaced from the first plate. Each of the first and second plates have a pilot guard aperture defined therein. The pilot guard has a first end defining a gas inlet configured to receive a gas supply line, and a second end defining a gas outlet. The pilot guard includes an elongate body and a pilot hood disposed at the second end, and is configured be inserted into the pilot guard apertures. The pilot guard further includes a first retention element configured to cooperate with a second retention element on the gas supply line to maintain a connection between the pilot guard and the gas supply line.
    Type: Application
    Filed: April 30, 2014
    Publication date: November 5, 2015
    Inventors: James B. Prichard, Mark H. Stark, Soraya C. Mendoza, Arturo U. Olague, Jorge D. Viesca, John S. Haefner
  • Patent number: 9103550
    Abstract: A control system for a water heater generally includes a water heater controller configured to receive upper and lower sensor temperatures associated with water in the respective upper and lower portions of the tank. The water heater controller is configured to determine a value indicative of a portion of water in the tank at a desired set-point temperature as a function of the upper sensor temperature, the lower sensor temperature, and the desired set-point temperature. The water heater controller is configured to wirelessly transmit at least one signal indicative of said value indicative of the portion of water in the tank at the desired set-point temperature. A user interface includes a plurality of selectively illuminated segmented portions. The user interface is configured to receive said value from the water heater controller and to selectively illuminate a number of segmented portions representative of said value.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: August 11, 2015
    Assignee: Emerson Electric Co.
    Inventors: Jeffrey N. Arensmeier, Donald E. Donnelly, Edward B. Evans, John S. Haefner, G. Scott Vogel
  • Patent number: 8544423
    Abstract: A control for a water heater is provided that comprises a pressure switch for sensing a predetermined level of airflow sufficient for maintaining proper burner operation, and a temperature sensing means for sensing the temperature of the water in the tank. The control further comprises a processor for controlling the operation of the burner to maintain the water temperature above a predetermined value. When the processor receives a signal from the pressure switch or temperature switch indicating a malfunction, the processor shuts down the burner and subsequently attempts to restart the burner. The processor will lock-out further burner operation after a predetermined number of consecutive shut downs occurs, and will communicate any malfunction information to a remote display device.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: October 1, 2013
    Assignee: Emerson Electric Co.
    Inventors: G. Scott Vogel, John S. Haefner, Edward B. Evans
  • Publication number: 20120227682
    Abstract: A control system for a water heater generally includes a water heater controller configured to receive upper and lower sensor temperatures associated with water in the respective upper and lower portions of the tank. The water heater controller is configured to determine a value indicative of a portion of water in the tank at a desired set-point temperature as a function of the upper sensor temperature, the lower sensor temperature, and the desired set-point temperature. The water heater controller is configured to wirelessly transmit at least one signal indicative of said value indicative of the portion of water in the tank at the desired set-point temperature. A user interface includes a plurality of selectively illuminated segmented portions. The user interface is configured to receive said value from the water heater controller and to selectively illuminate a number of segmented portions representative of said value.
    Type: Application
    Filed: May 11, 2012
    Publication date: September 13, 2012
    Applicant: EMERSON ELECTRIC CO.
    Inventors: Jeffrey N. Arensmeier, Donald E. Donnelly, Edward B. Evans, John S. Haefner, G. Scott Vogel
  • Patent number: 8176881
    Abstract: A control for a water heater is provided that comprises a pressure switch for sensing a predetermined level of airflow sufficient for maintaining proper burner operation, and a temperature sensing means for sensing the temperature of the water in the tank. The control further comprises a processor for controlling the operation of the burner to maintain the water temperature above a predetermined value. When the processor receives a signal from the pressure switch or temperature switch indicating a malfunction, the processor shuts down the burner and subsequently attempts to restart the burner. The processor will lock-out further burner operation after a predetermined number of consecutive shut downs occurs, and will communicate any malfunction information to a remote display device.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: May 15, 2012
    Assignee: Emerson Electric Co.
    Inventors: Jeffrey N. Arensmeier, Donald E. Donnelly, Edward B. Evans, John S. Haefner, G. Scott Vogel
  • Publication number: 20100116227
    Abstract: A control for a water heater is provided that comprises a pressure switch for sensing a predetermined level of airflow sufficient for maintaining proper burner operation, and a temperature sensing means for sensing the temperature of the water in the tank. The control further comprises a processor for controlling the operation of the burner to maintain the water temperature above a predetermined value. When the processor receives a signal from the pressure switch or temperature switch indicating a malfunction, the processor shuts down the burner and subsequently attempts to restart the burner. The processor will lock-out further burner operation after a predetermined number of consecutive shut downs occurs, and will communicate any malfunction information to a remote display device.
    Type: Application
    Filed: January 19, 2010
    Publication date: May 13, 2010
    Inventors: G. Scott Vogel, Edward B. Evans, John S. Haefner
  • Patent number: 7647895
    Abstract: A control for a water heater is provided that comprises a pressure switch for sensing a predetermined level of airflow sufficient for maintaining proper burner operation, and a temperature sensing means for sensing the temperature of the water in the tank. The control further comprises a processor for controlling the operation of the burner to maintain the water temperature above a predetermined value. When the processor receives a signal from the pressure switch or temperature switch indicating a malfunction, the processor shuts down the burner and subsequently attempts to restart the burner. The processor will lock-out further burner operation after a predetermined number of consecutive shut downs occurs, and will communicate any malfunction information to a remote display device.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: January 19, 2010
    Assignee: Emerson Electric Co.
    Inventors: Donald E. Donelly, Edward B. Evans, John S. Haefner, G. Scott Vogel
  • Publication number: 20090101085
    Abstract: A control for a water heater is provided that comprises a pressure switch for sensing a predetermined level of airflow sufficient for maintaining proper burner operation, and a temperature sensing means for sensing the temperature of the water in the tank. The control further comprises a processor for controlling the operation of the burner to maintain the water temperature above a predetermined value. When the processor receives a signal from the pressure switch or temperature switch indicating a malfunction, the processor shuts down the burner and subsequently attempts to restart the burner. The processor will lock-out further burner operation after a predetermined number of consecutive shut downs occurs, and will communicate any malfunction information to a remote display device.
    Type: Application
    Filed: December 12, 2008
    Publication date: April 23, 2009
    Inventors: Jeffrey N. Arensmeier, Donald E. Donnelly, Edward B. Evans, John S. Haefner, G. Scott Vogel
  • Patent number: 7290502
    Abstract: A control for a water heater is provided that comprises a pressure switch for sensing a predetermined level of airflow sufficient for maintaining proper burner operation, and a temperature sensing means for sensing the temperature of the water in the tank. The control further comprises a processor for controlling the operation of the burner to maintain the water temperature above a predetermined value. When the processor receives a signal from the pressure switch indicating an insufficient level of airflow, the processor shuts down the burner and subsequently attempts to restart the burner. The processor will also lock-out further burner operation after a predetermined number of consecutive shut downs occurs before the water is heated to a desired temperature during a single call for heating.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: November 6, 2007
    Assignee: Emerson Electric Co.
    Inventors: Larry D. Kidd, R. Dale Shropshire, John S. Haefner, G. Scott Vogel
  • Patent number: 5169301
    Abstract: A control system for a gas fired, direct ignition, induced draft furnace includes a radiant heat sensing switch responsive to a hot surface igniter and burner flame, a single-pole, double-throw pressure switch responsive to fluid flow effected by the inducer, and a plurality of relays responsive to the radiant heat sensing switch, the pressure switch, and various other connected switching means.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: December 8, 1992
    Assignee: Emerson Electric Co.
    Inventors: Donald E. Donnelly, John S. Haefner, David J. Heritage
  • Patent number: 4604046
    Abstract: A direct ignition gas burner control system includes a microcomputer for controlling energizing of an electrical resistance igniter, for subsequently effecting flow of gas to the burner when the igniter is at gas ignition temperature, and for effecting continued flow of gas in response to current flow through the burner flame.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: August 5, 1986
    Inventors: Carl J. Mueller, Bernard T. Brown, Dennis M. Rippelmeyer, John S. Haefner
  • Patent number: 4518345
    Abstract: A direct ignition gas burner control system includes an igniter, two serially-arranged gas valves for controlling the flow of gas to the burner, and a microcomputer and related circuitry for controlling energizing of the igniter and valves. The microcomputer and its related circuitry provide for numerous options in system functions and for numerous checks on the integrity of the system components.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: May 21, 1985
    Assignee: Emerson Electric Co.
    Inventors: Carl J. Mueller, John S. Haefner
  • Patent number: 4444551
    Abstract: A direct ignition gas burner control system includes a microcomputer for controlling energizing of an electrical resistance igniter, for subsequently effecting flow of gas to the burner when the igniter is at gas ignition temperature, and for effecting continued flow of gas in response to current flow through the burner flame.
    Type: Grant
    Filed: August 27, 1981
    Date of Patent: April 24, 1984
    Assignee: Emerson Electric Co.
    Inventors: Carl J. Mueller, Bernard T. Brown, Dennis M. Rippelmeyer, John S. Haefner