Patents by Inventor Kevin R. McGahey

Kevin R. McGahey 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).

  • Generator for absorption heat pumps
    Patent number: 5546760
    Abstract: An absorption refrigeration and heating system has helical concentric coils for two generators (80 and 81) and recuperators (86 and 95) on a common axis (232) with a heating unit (84) at the center and allowing the hot combustion gases (245) to circulate in serpentine fashion through separate concentric chambers containing the coils.An absorber (97), condenser (100) and recuperator (107) are placed in a single module (270) and configured with a tube-in-tube or tube-in-cylinder construction with fluted inner tubes. A general purpose, divided-flow, tube-in-cylinder, heat-transfer device (400) is used to reduce the pressure drop in the circulating fluid.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 20, 1996
    Assignee: Columbia Gas of Ohio, Inc.
    Inventors: F. Bert Cook, Stephen E. Petty, Howard C. Meacham, Jr., Richard N. Christensen, Kevin R. McGahey
  • Heat transfer apparatus for heat pumps
    Patent number: 5533362
    Abstract: A refrigeration and heating system in which an absorber (97), condenser (100) and recuperator are placed (107) in a single module (270) and are provided with tube-in-tube or tube-in-cylinder construction with fluted inner tubes. A general purpose, divided-flow, tube-in-cylinder, heat transfer device (400) is used to reduce the pressure drop in the circulating fluid.
    Type: Grant
    Filed: August 19, 1994
    Date of Patent: July 9, 1996
    Assignee: Columbia Gas of Ohio, Inc.
    Inventors: F. Bert Cook, Stephen E. Petty, Howard C. Meacham, Jr., Richard N. Christensen, Kevin R. McGahey
  • Heat transfer apparatus
    Patent number: 5339654
    Abstract: A refrigeration and heating system has been made in which improved efficiencies are obtained by placing helical concentric coils of at least two generators (80 and 81) and recuperators (86 and 95) on a common axis (232) with a heating unit (84) at the center and allowing the hot combustion gases (245) to circulate in serpentine fashion through separate concentric chambers containing the coils. Further efficiencies are obtained by placing an absorber (97), condenser (100) and recuperator (107) in a single module (270) and by using tube-in-tube or tube-in-cylinder construction with fluted inner tubes. A general purpose, divided-flow, tube-in-cylinder, heat-transfer device (400) is used to reduce the pressure drop in the circulating fluid.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: August 23, 1994
    Assignee: Columbia Gas System Service Corporation
    Inventors: F. Bert Cook, Stephen E. Petty, Howard C. Meacham, Jr., Richard N. Christensen, Kevin R. McGahey
  • Heat transfer apparatus for heat pumps
    Patent number: 5067330
    Abstract: A refrigeration and heating system has been made in which improved efficiencies are obtained by placing helical concentric coils of at least two generators and recuperators on a common axis with a heating unit at the center and allowing the hot combustion gases to circulate in serpentine fashion through separate concentric chambers containing the coils. Further efficiencies are obtained by placing an absorber, condenser and recuperator with a single module and by using tube-in-tube or tube-in-cylinder construction with fluted inner tubes.
    Type: Grant
    Filed: February 9, 1990
    Date of Patent: November 26, 1991
    Assignee: Columbia Gas System Service Corporation
    Inventors: F. Bert Cook, Stephen E. Petty, Howard C. Meacham, Jr., Richard N. Christensen, Kevin R. McGahey