U-coupling Patents (Class 122/87)
  • Potable water heater
    Patent number: 8118239
    Abstract: A water heater for heating potable water used in a boat or vehicle. Exhaust heated by the burner of the water heater is discharged from the burner and is conveyed through an exhaust duct which extends through a water jacket surrounding the burner and which water jacket holds the potable water to be heated. The potable water is heated by the burner and also by the hot exhaust gases in the exhaust duct. Operating components are accessible from one end of the water heater.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: February 21, 2012
    Assignee: International Thermal Investments Ltd.
    Inventor: Edgar C. Robinson
  • Compact gas fired water heater with improved combustion chamber
    Patent number: 6152083
    Abstract: A compact gas fired water heater is provided for recreational vehicles or the like, with higher recoveries and greater efficiencies resulting from increased heating surface and smoother flow of gases in the combustion chamber. The combustion chamber is comprised of two straight horizontal lengths of tube joined in the rear by a specially formed coupler with an additional plate between the tubes to close the front of the coupler.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: November 28, 2000
    Assignee: American Standard Inc.
    Inventor: James E. Bridegum