Fluid Fuel Patents (Class 122/245)
  • Water boiler with metal core
    Patent number: 6158396
    Abstract: This invention relates to a natural gas fired water boiler having a spirally wrapped finned heat exchanger surrounding a burner. The center of the heat exchanger being plugged by a metal core having a constantly reducing diameter truncated cone top.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: December 12, 2000
    Assignee: Glowcore Acquisition Company, Inc.
    Inventors: David Lackstrom, John Horrocks
  • Water boiler with metal core
    Patent number: 5782208
    Abstract: This invention relates to a natural gas fired water boiler having a spirally wrapped finned heat exchanger surrounding a burner. The center of the heat exchanger being plugged by a metal core having a constantly reducing diameter truncated cone top.
    Type: Grant
    Filed: June 11, 1996
    Date of Patent: July 21, 1998
    Assignee: Glowcore Acquisition Company
    Inventors: David Lackstrom, John Horrocks
  • Steam boiler with externally positioned superheating means
    Patent number: 5755187
    Abstract: The invention relates to a boiler for the production of steam, the boiler having a maximum capacity of 100 ton/hr or more and comprising a furnace having a substantially constant rectangular cross-section and a back pass with a substantially constant rectangular cross-section. The furnace and the back pass are mounted close to each other and means are provided for superheating the steam. The steam superheating means are positioned within the back pass, so that no superheater is positioned within the furnace.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: May 26, 1998
    Assignee: Gotaverken Energy AB
    Inventors: Lennart Nordenberg, Ola Herstad
  • High efficiency water boiler having finned heat exchanger
    Patent number: 5671700
    Abstract: This invention relates to a natural gas fire water boiler having a spirally wrapped finned heat exchanger surrounding a burner. The center of the heat exchanger being plugged by a core having a constantly reducing diameter truncated cone top.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: September 30, 1997
    Assignee: Glowcore Acquisition Company
    Inventor: David Lackstrom
  • Water heating apparatus
    Patent number: 5311843
    Abstract: A radially fired water heating apparatus (10) having a plurality of stacked segments of multiple-loop, finned coiled tubing (58) separated by inner and outer support baffles (86, 88), all contained within a cylindrical baffle (20) which cooperates with the coiled tubing (58) and support baffles (86, 88) to direct combustion by-products into an annulus (24) promoting heat transfer to a countercurrent flow of inlet air, the water being supplied to and recovered from the stacked segments of coiled tubing (58) through inlet and outlet headers (54, 56) disposed outside cylindrical baffle (20) that can be selectively modified by installing or removing baffles (90, 92) for either single-pass or multiple-pass operation.
    Type: Grant
    Filed: May 12, 1993
    Date of Patent: May 17, 1994
    Assignee: Weben-Jarco, Inc.
    Inventor: Kevin J. Stuart
  • Gas instantaneous water heater
    Patent number: 4550689
    Abstract: Disclosed is a gas instantaneous water heater for use in boats or recreational vehicles comprising a housing divided into a large upper portion and a small lower portion. A gas valve and electric filament lighter are controlled by an electronic module which opens the gas valve and ignites the gas in response to a signal from a sensor capable of sensing water flow or a pressure drop. The heater employs a photoelectric flame sensor and a thermal override switch to shut off the gas in the event the igniter fails to ignite the gas or if the water temperature is excessively high.
    Type: Grant
    Filed: October 31, 1983
    Date of Patent: November 5, 1985
    Inventor: Gerry Wolter