Patents by Inventor Gregory W. Murtha

Gregory W. Murtha 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).

  • Combination water heating and space heating apparatus and control therefor
    Patent number: 6857578
    Abstract: A combination water heating and space heating apparatus includes a water heating unit and a space heating unit. The water heating unit has a water storage tank, a heating device for heating water stored in the tank, and a first temperature sensor for sensing water temperature. The space heating unit includes a heat exchanger for heating air supplied to an indoor space, a blower for blowing air over the heat exchanger, and a second temperature sensor for sensing air temperature in the space. Heated water is supplied from the tank to the heat exchanger by means of a circulation pump when the second temperature sensor indicates a demand for heat in the space. The apparatus is controlled to give priority to domestic hot water use (e.g., potable water) over space heating use.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: February 22, 2005
    Assignee: Lennox Manufacturing Inc.
    Inventors: Robert J. Alvarez, Gregory W. Murtha, Islam O. Shahin
  • Combination water heating and space heating apparatus and control therefor
    Publication number: 20040227003
    Abstract: A combination water heating and space heating apparatus includes a water heating unit and a space heating unit. The water heating unit has a water storage tank, a heating device for heating water stored in the tank, and a first temperature sensor for sensing water temperature. The space heating unit includes a heat exchanger for heating air supplied to an indoor space, a blower for blowing air over the heat exchanger, and a second temperature sensor for sensing air temperature in the space. Heated water is supplied from the tank to the heat exchanger by means of a circulation pump when the second temperature sensor indicates a demand for heat in the space. The apparatus is controlled to give priority to domestic hot water use (e.g., potable water) over space heating use.
    Type: Application
    Filed: May 15, 2003
    Publication date: November 18, 2004
    Applicant: Lennox Manufacturing Inc.
    Inventors: Robert J. Alvarez, Gregory W. Murtha, Islam O. Shahin