Patents by Inventor Stephen P. Cremean

Stephen P. Cremean 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 and process for measuring the magnitude of leaks
    Patent number: 5361636
    Abstract: An accelerometer is attached to a pipe wall to measure the acoustic pressure waves generated in a fluid within the pipe as a result of a leak in a valve in the pipeline. Calibrating the accelerometer and tuning it to particular wave frequencies allows a determination of the magnitude of the leak through the valve.
    Type: Grant
    Filed: September 23, 1992
    Date of Patent: November 8, 1994
    Assignee: Columbia Gas of Ohio, Inc.
    Inventors: Jerry E. Farstad, Stephen P. Cremean
  • Absorption refrigeration and heat pump system
    Patent number: 4742693
    Abstract: This invention relates to a cooling and heating system which operates on the absorption and phase change heat exchange principle. More particularly it relates to a continuous heat actuated, air cooled, double effect generator cycle, absorption system. In further aspects, this invention relates to a system constructed for use with an absorption refrigeration solution pair consisting of a nonvolatile absorbent and a highly volatile refrigerant which is highly soluble in the absorbent. A disclosed refrigerant pair are ammonia as the refrigerant and sodium thiocyanate as the absorbent. An absorption cycle is disclosed using the thermo physical properties of sodium thiocyanate/ammonia, absorption/refrigerant pair.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: May 10, 1988
    Assignee: Columbia Gas System Service Corp.
    Inventors: Edward A. Reid, Jr., F. Bert Cook, Stephen P. Cremean, Richard H. Merrick, Edgar M. Purvis
  • Absorption refrigeration and heat pump system
    Patent number: 4722193
    Abstract: This invention relates to a cooling and heating system which operates on the absorption and phase change heat exchange principle. More particularly it relates to a continuous heat actuated, air cooled, double effect generator cycle, absorption system. In further aspects, this invention relates to a system constructed for use with an absorption refrigeration solution pair consisting of a nonvolatile absorbent and a highly volatile refrigerant which is highly soluble in the absorbent. A disclosed refrigerant pair are ammonia as the refrigerant and sodium thiocyanate as the absorbent. An absorption cycle is disclosed using the thermo physical properties of sodium thiocyanate/ammonia, absorption/refrigerant pair.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: February 2, 1988
    Assignee: Columbia Gas System Service Corp.
    Inventors: Edgar M. Purvis, Edward A. Reid, Jr., F. Bert Cook, Stephen P. Cremean
  • Absorption refrigeration and heat pump system
    Patent number: 4719767
    Abstract: This invention relates to a cooling and heating system which operates on the absorption and phase change heat exchange principle. More particularly it relates to a continuous heat actuated, air cooled, double effect generator cycle, absorption system. In further aspects, this invention relates to a system constructed for use with an absorption refrigeration solution pair consisting of a nonvolatile absorbent and a highly volatile refrigerant which is highly soluble in the absorbent. A disclosed refrigerant pair are ammonia as the refrigerant and sodium thiocyanate as the absorbent. An absorption cycle is disclosed using the thermo physical properties of sodium thiocyanate/ammonia, absorption/refrigerant pair.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: January 19, 1988
    Assignee: Columbia Gas System Service Corp.
    Inventors: Edward A. Reid, Jr., F. Bert Cook, Edward M. Winter, Richard H. Merrick, Edgar M. Purvis, Jr., Stephen P. Cremean