Gas Patents (Class 126/39R)
  • Patent number: 5238398
    Abstract: A variable orifice gas modulating valve for use with an atmospheric Bunsen-type burner is disclosed. The variable orifice valve discharges a jet of fuel directly into the burner mixing tube and modulates the gas flow to the burner by changing the cross-sectional area of the gas jet. This is accomplished by a thin moveable sheet interposed between a valve body and a cap, through which pass the upstream and downstream portions of a short gas discharge passageway. The sheet has a hole which is positioned relative to the axis of the gas discharge passageway so as to produce a discharge orifice of variable size. The gas jet has the same velocity at all inputs, and flow rate variation is manifested by variation in the jet cross-sectional flow area.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: August 24, 1993
    Assignee: Harmony Thermal Company, Inc.
    Inventor: James A. Harris
  • Patent number: 5234196
    Abstract: A gas modulating valve for use with a gas burner is disclosed. Two variations of the valve are disclosed: the direct-discharge variation discharges a gas jet directly into the mixing tube of a gas burner, and the in-line variation meters the gas flow from the supply line to a gas manifold, which in turn terminates in one or more fixed orifices which discharge to the burner mixing tube or tubes. With respect to the moving parts, the two variations are identical. In both variations, the modulation of the gas flow is achieved by a thin moveable slide sandwiched in a planar space between two fixed valve body members, through which pass the upstream and downstream portions of a short gas discharge passageway. The slide has a hole which is positioned relative to the axis of the gas discharge passageway so as to produce a discharge orifice of variable size. The valve is sealed against leakage by face seals effected with o-rings. The valve actuator is a stepper motor which is controlled by an electronic controller.
    Type: Grant
    Filed: January 6, 1993
    Date of Patent: August 10, 1993
    Assignee: Harmony Thermal Company, Inc.
    Inventor: James A. Harris
  • Patent number: 5226406
    Abstract: A cooking range, specially for stir-fry cooking, characterized by an imperforate work top through which a chimney-like burner collar opens and which is covered and closed by a frying pan placed thereupon, with a lateral opening through said collar and discharging beneath the work top for lateral induction of the flame products of combustion to exhaust through a remote flue, preferably embodied is a stepped work top with pairs of tiered burner collars, whereby a multiplicity of frying pans are simultaneously employed.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: July 13, 1993
    Assignee: Connerton Appliance Company
    Inventor: Howard S. Reynolds
  • Patent number: 5222475
    Abstract: A barbeque grill is arranged to include a removable hood having secured thereto a fry pot and an overlying hood having a second grill spaced above the first grill mounting briquets thereon. The hood is arranged to include an adjustable venting structure to an upper distal end of the hood coaxially aligned relative to the hood to permit selective venting of heat within the hood.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: June 29, 1993
    Inventor: Donald Greener
  • Patent number: 5218951
    Abstract: A device for monitoring the operation of a kitchen range has a mirror element which can be positioned on the range so that a flame is reflected in the mirror element and can be seen by a user to adjust the flame.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: June 15, 1993
    Inventor: Maryan Chak
  • Patent number: 5215074
    Abstract: A range with a lift-up cooktop is provided with an integrally formed non-metallic combination cooktop locator and support rod race member to position the cooktop relative to the rang body when the lift-up cooktop is in its lowered position and to provide a non-metallic bearing surface for the support rod to slide against when the lift-up cooktop is raised and lowered.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: June 1, 1993
    Assignee: General Electric Company
    Inventors: Arthur C. Wilson, David L. Kinny, Ralph G. Hawkins
  • Patent number: 5209217
    Abstract: A dual mode downdraft gas range provides a number of substantial advantages, including operation in a powered burner mode and an atmospheric mode. In the powered burner mode, a plurality of powered open flame surface burners can provide even heat from each of the burners as a result of burner flames that provide substantially complete combustion close to the burner outlets in short, stable flames that are unaffected by an adjacent downdraft exhaust or other outside influences. In the atmospheric mode, the gas burners can operate without a downdraft exhaust. The gas range can meet agency requirements in both the powered mode and atmospheric mode of operation and can be inherently fail-safe in the event of a power failure in the downdraft exhaust system. The gas range can be economically and easily manufactured and assembled, with burner controls arranged for convenient operation at one side of the range box for the plurality of burners.
    Type: Grant
    Filed: July 24, 1992
    Date of Patent: May 11, 1993
    Assignee: Maytag Corporation
    Inventors: Stanley H. Beach, Paul D. Noel, Wallace E. Schmidt, Edward H. Strain
  • Patent number: 5205275
    Abstract: A gas oven includes a gas valve having a rotor plug rotatably held within a valve body of the gas valve, an oxygen supply system fluidically connected with the gas valve for directing oxygen into the valve for adjusting an oxygen stream flowing into a gas stream through the valve for helping a complete gas combustion in the gas oven to prevent the production of poisonous carbon.
    Type: Grant
    Filed: November 20, 1991
    Date of Patent: April 27, 1993
    Inventor: Che-Yuan Chang
  • Patent number: 5190026
    Abstract: A modular countertop cooking assembly is provided comprising at least one cooking module and a control module. The cooking module includes a burner box housing, and preferably includes a downdraft ventilation system, and is adapted to operatively receive at least one heating unit within the burner box. The control module is preferably arranged juxtaposed to the cooking module and can provide selective control of the heating units and the ventilation system included in the cooking assembly. The cooking module burner box includes an integral peripheral trim about its top edge and the control module includes an integral peripheral trim about its edge, both of which interface when assembled to provide a flush appearance across their interface and the appearance of a unitary cooking appliance disposed within a countertop.
    Type: Grant
    Filed: November 19, 1991
    Date of Patent: March 2, 1993
    Assignee: Maytag Corporation
    Inventor: Roger F. Doty
  • Patent number: 5186158
    Abstract: A burner for a "sealed top" range which has a generally upwardly diverging conical body which radially disposed fuel ports and a generally flat removable cap disposed on the upper periphery of the body. Alternative cap designs and electric igniters are are also disclosed.
    Type: Grant
    Filed: August 23, 1990
    Date of Patent: February 16, 1993
    Assignee: Lincoln Brass Works, Inc.
    Inventor: William J. Ferlin
  • Patent number: 5158065
    Abstract: A domestic cooking range provides an upswept cook top which promotes ease of cleaning in combination with a vent stack which exhausts flue gases from the oven through an elongated opening between the upswept portion and a control panel on the backguard. A deflector is provided to prevent the flue gases from impinging upon either the control panel or the cook top.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: October 27, 1992
    Assignee: White Consolidated Industries, Inc.
    Inventors: Duane A. Lee, Robert McFarland
  • Patent number: 5158067
    Abstract: A portable fluid fueled food cooker has a fuel burner housing which can support and stabilize a wok of the kind having a rounded bottom. In the preferred form, the housing has an annular sidewall encircling a combustion chamber and an apertured inner sleeve having an upper edge that is of smaller diameter than the sidewall and which forms an open centered circular lip proportioned to receive and seat the rounded bottom of the wok. The housing attaches to a post and the post attaches to a base platform having an indentation shaped to receive and seat a pressurized fluid fuel tank. The tank is retained by a clamp arm extending from the post. The housing, post and base are preferably disengagable from each other to facilitate carrying and storage of the cooking apparatus.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: October 27, 1992
    Assignee: Dutro Company
    Inventors: William A. Dutro, S. Ty Measom
  • Patent number: 5152276
    Abstract: A sealed gas burner assembly provides fast spark ignition of the primary air/gas mixture by supporting the electrode in an electrically insulative member that is disposed in a fluid-tight sealing engagement through the electrode aperture of a burner head, whereby ignition is facilitated by providing an ignition port directly adjacent an exterior terminal end portion of the electrode. The burner head has a low profile defined partly by a circumferential curved sidewall which eliminates turbulence in secondary airflow to the burner ports during high burner rates. A venturi tube providing the primary air/gas mixture to the burner and ignition is fully contained within an internal chamber of the burner head. The assembly is detachably secured to the burner opening of a range top through a twist lock engagement therewith, and is also provided with a seal to prevent spillovers from leaking between the assembly and the range top into the burner box.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: October 6, 1992
    Assignee: Maytag Corporation
    Inventors: Eddie M. Brock, William E. T. Stevens, Shelton T. Barnes
  • Patent number: 5139417
    Abstract: An improvement to conventional atmospheric gas burners particularly advantageously applied to the type used as surface heating units in gas cooking appliances such as ranges and cooktops, which typically comprise a burner head having a plurality of primary burner ports formed at port locations equally spaced about the periphery of the burner head. Improvement is realized by not forming primary burner ports at selected ones of the equally spaced port locations. The unused port locations are selected so as to separate the primary ports into groups. The reduction in the number of ports reduces the total port area thereby reducing the amount of primary air entrained in the air/gas mixture delivered to the burner. In addition the resulting spacing of the groups of ports has the effect of reducing the amount of secondary air per port relative to that which would be entrained by the same number of ports, if equally distributed about the periphery.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: August 18, 1992
    Assignee: General Electric Company
    Inventor: Reza Ghassemzadeh
  • Patent number: 5133334
    Abstract: A burner construction and method of making the same are provided, the burner construction comprising a burner body having a chamber therein and having opposed ends one of which is open to the chamber and the other of which has structure for interconnecting a source of fuel to the chamber, and a removable cap closing the one end of the body, the burner construction having ports interconnecting the chamber to the exterior of the burner construction and through which the fuel can issue to burn externally to the burner construction, the burner construction comprising a removable venturi section disposed in the chamber and being removable therefrom through the open end of the body when the cap has been removed therefrom.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: July 28, 1992
    Assignee: Robertshaw Controls Company
    Inventor: Fred Riehl
  • Patent number: 5133658
    Abstract: Gas burner, particularly for household appliances, comprising a burner body (1) having a peripheral side wall (5) defining an enclosure with an outward opening and at least one air-gas mixture supply orifice (13), which enclosure is adapted to contain a "soft" flame able to withstand sudden pressure variations of the primary air brought to the burner and to re-activate the flames of the burner should they be blown out, characterized in that it further comprises at least one chamber (15) situated behind the supply orifice (13) of said enclosure (11) and itself having a gas mixture supply orifice (16) with a cross section substantially equal to or greater than that of the supply orifice (13) of the enclosure, this chamber being configured so that the air-gas mixture which is contained therein forms a buffer cancelling out or attenuating the sudden pressure variations of the primary air admitted into the burner and so that the flame of the enclosure is maintained.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: July 28, 1992
    Assignee: Sourdillon
    Inventors: Jean-Bernard Le Monnier De Gouville, Bernard Dane
  • Patent number: 5125390
    Abstract: A cooking apparatus, a burner construction therefor and methods of making the same are provided, the cooking apparatus comprising a frame unit having a top surface unit provided with an opening passing therethrough, and a burner construction carried by the frame unit so that the burner construction projects out of the opening above the top surface unit, the burner construction comprising a first portion that extends above the top surface unit, the first portion having a chamber therein and having ports out of which fuel can issue from the chamber to burn externally to the first portion above the top surface unit, the burner construction comprising a second portion that extends below the top surface unit and has structure for interconnecting with a fuel source conduit and for delivering fuel therefrom to the chamber, the first portion and the second portion being separate parts respectively having first structure interconnecting the same together in one of a plurality of selectable rotational positions therebe
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: June 30, 1992
    Assignee: Robertshaw Controls Company
    Inventor: Fred Riehl
  • Patent number: 5097818
    Abstract: In a gas governor for installation with a burner in a gas-fired appliance, all incoming gas is introduced into a common burner gas channel through a peripheral channel of a valve stem. A common burner gas channel branches into two channels to form a main burner channel and a pilot burner gas channel. By means of a flange integrally mounted around the outlet portion of main burner gas channel, the centerline of the main burner nozzle which is formed in the outlet of the main burner gas channel, may be coaxially aligned with the central axis of the venturi tube of main burner.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: March 24, 1992
    Assignee: SamSung Electronics, Co., Ltd.
    Inventors: Heui T. Kee, Seung H. Kim
  • Patent number: 5098283
    Abstract: The invention provides a combustion device such as a stove which may include a pressurized fuel mixture, such as an aerosol container containing alcohol and a propellant which may comprise a normally gaseous hydrocarbon, such as a liquified petroleum gas. The propellant and air are fed to a combustion zone as a combustion mixture, which is combusted therein in a cold start period to pre-heat the liquid fuel and vaporize it. When the liquid fuel is vaporized by the heat provided by combusting the propellant gas, combustion is continued by combusting the vaporized liquid, e.g., alcohol, fuel. The pressurized fuel composition may comprise a major proportion of alcohol together with a minor proportion of the hydrocarbon propellant starter fuel. The method therefore includes carrying out an initial, cold-start phase of combustion utilizing the propellant as fuel, and a subsequent stage of combustion utilizing the vaporized liquid fuel.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: March 24, 1992
    Assignee: Creative Products Inc. of Rossville
    Inventor: Clarence P. Clapp
  • Patent number: 5085202
    Abstract: A burner construction and method of making the same are provided, the burner construction comprising a burner body having a chamber therein and having opposed ends one of which is open to the chamber and the other of which has structure for interconnecting a source of fuel to the chamber, and a removable cap closing the one end of the body, the burner construction having ports interconnecting the chamber to the exterior of the burner construction and through which the fuel can issue to burn externally to the burner construction, the burner construction comprising a removable venturi section disposed in the chamber and being removable therefrom through the open end of the body when the cap has been removed therefrom.
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: February 4, 1992
    Assignee: Robertshaw Controls Company
    Inventor: Fred Riehl
  • Patent number: 5083915
    Abstract: A burner construction and method of making the same are provided, the burner construction comprising a burner body having a chamber therein and having opposed ends one of which is open to the chamber and the other of which has structure for interconnecting a source of fuel to the chamber, and a removable cap closing the one end of the body, the cap having opposed sides and an annular peripheral edge interconnecting the opposed sides together, the burner construction having ports interconnecting the chamber to the exterior of the burner construction and through which the fuel can issue to burn externally to the burner construction, the cap having an annular groove in one of the opposed sides thereof and inboard of the peripheral edge thereof, the burner body having a projection disposed in the groove to hold the cap on the one end of the burner body in its closing position thereof.
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: January 28, 1992
    Assignee: Robertshaw Controls Company
    Inventor: Fred Riehl
  • Patent number: 5080580
    Abstract: The invention provides a combustion device such as a stove which may include a pressurized fuel mixture, such as an aerosol container containing alcohol and a propellant which may comprise a normally gaseous hydrocarbon, such as a liquified petroleum gas. The propellant and air are fed to a combustion zone as a combustion mixture, which is combusted therein in a cold start period to pre-heat the liquid fuel and vaporize it. When the liquid fuel is vaporized by the heat provided by combusting the propellant gas, combustion is continued by combusting the vaporized liquid, e.g., alcohol, fuel. The pressurized fuel composition may comprise a major proportion of alcohol together with a minor proportion of the hydrocarbon propellant starter fuel. The method therefore includes carrying out an initial, cold-start phase of combustion utilizing the propellant as fuel, and a subsequent stage of combustion utilizing the vaporized liquid fuel.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: January 14, 1992
    Inventor: Clarence P. Clapp
  • Patent number: 5065737
    Abstract: A method and apparatus for cleaning the burners of a gas cooking range in which food oils and particulates are removed from the burners via slow incineration caused by the provision of flame directly adjacent the burners which directly heats the burners.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: November 19, 1991
    Inventor: Ernest C. Miehle
  • Patent number: 5054465
    Abstract: A food utensil for use with either an electric heater or a gas burner is provided having an upwardly projecting flat annular section surrounding a central opening. Six semi-circular sections extending radially from the central opening passes around the annular section. A pot may be mounted over the central opening for heat transfer directly from the electric heater or the gas burner and food contained in the semi-circular sections may be heated simultaneously with the cooking of food in the pot. In this manner, food products may be heated that are contained within the pot or pan mounted on the food utensil while simultaneously allowing cooking of food contained within the semi-circular sections.
    Type: Grant
    Filed: October 2, 1990
    Date of Patent: October 8, 1991
    Assignee: Ying Hung Enterprise Co., Ltd.
    Inventor: Ching-Shyang Chern
  • Patent number: 5046945
    Abstract: An apparatus including a primary and secondary flammable gas container, wherein the flammable gas container is arranged for use during depletion of flammable gas within the primary container. The apparatus further includes a coupling member mounted to the secondary gas container cooperative to direct flammable gas to a desired appliance.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: September 10, 1991
    Inventor: Kevin J. McGowan
  • Patent number: 5046477
    Abstract: A gas cook-top with a glass top wherein each of a plurality of burners has a neck portion with a flange that seats down on a gasket thereby sealing the burner to the glass top. A collar surrounds the neck portion of each burner. Brackets are positioned below the glass top and support the burners independent of the glass top. A grate covers a pair of burners and has locator rod members that encircle portions of the respective collars, thereby fixedly locating the grate on the glass top.
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: September 10, 1991
    Assignee: Amana Refrigeration Inc.
    Inventors: James L. Bennett, John D. Robeson, Ralph E. Biddle
  • Patent number: 5044352
    Abstract: A stove suitable for large-burner cooking with a high heat flame has an enclosed stove casing with an upper cooking surface, a hollow interior, and a burner well recessed into the interior of the casing. A large burner is positioned in the burner well, and a cooking vessel can be placed over the well so as to close the burner flame off from the outside. The burner well has an annular rim which can support a wok or other rounded-bottom cooking vessel. The high heat exhaust from the burner is trapped in the well and entrained by natural convection into a duct member to a duct casing at a rear side of the stove which has baffles forming a labyrinthine channel for mixing cold air with the hot exhaust air from the large burner. The stove includes a catch basin member positionable in the interior of the burner well for catching any spillage or debris. The stove casing has a window formed in its front panel for allowing the stove user to visually check the burner flame.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: September 3, 1991
    Inventor: Yuk L. Lok
  • Patent number: 5040970
    Abstract: A burner construction and method of making the same are provided, the burner construction comprising a burner body having a chamber therein and having opposed ends one of which is open to the chamber and the other of which has structure for interconnecting a source of fuel to the chamber, and a removable cap closing the one end of the body, the cap having opposed sides and an annular peripheral edge interconnecting the opposed sides together, the burner construction having ports interconnecting the chamber to the exterior of the burner construction and through which the fuel can issue to burn externally to the burner construction, the cap having an annular groove in one of the opposed sides thereof and inboard of the peripheral edge thereof, the burner body having a projection disposed in the groove to hold the cap on the one end of the burner body in its closing position thereof.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: August 20, 1991
    Assignee: Robertshaw Controls Company
    Inventor: Fred Riehl
  • Patent number: 5032183
    Abstract: A gas grill briquette basket used to help reduce flame flare-up and unhealthy bacteria growth which can result from a build-up of grease drippings from meat onto briquettes. Briquette basket could be made of metal rods welded together forming a basket (cage) which surrounds the briquettes. After cooking session has ended and food has been removed from food rack, user removes food rack, raises briquette basket with ladles which attached to either end of briquette basket, rotates briquette basket 180 degrees around the horizontal axis with said handles and lower said basket back into position, and replaces food rack. Now the side of the briquette basket which received the meat and the grease drippings during the cooking session is facing the gas burner and the heat from the burner burns the meat and the grease drippings.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: July 16, 1991
    Inventor: Richard E. Frazier
  • Patent number: 5024209
    Abstract: In order to accelerate the heating of a burner plate of a cooking appliance with a glass ceramic cooking surface and a radiant gas burner, the radiant gas burner is operated during the heating-up phase with an increased quantity of gas. The gas quantity is throttled to the normal rate at the latest upon reaching the operating temperature in the full load position. The time of throttling can either be predetermined by a time control or by determining the temperature of the burner plate. The gas quantity is throttled to achieve a predetermined temperature.
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: June 18, 1991
    Assignee: Schott Glaswerke
    Inventor: Kurt Schaupert
  • Patent number: 5016605
    Abstract: A furnace operating with steam and/or gas for cooking foodstuffs and comprising an enclosure containing on the one hand a gas burner connected to a system for supplying a mixture of gas and of combustion air under pressure which is mounted in the upper portion of the enclosure in an inverted downwards directed position and on the other hand a turbine for stirring the heated atmosphere within the enclosure.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: May 21, 1991
    Assignee: Gaz de France
    Inventors: Jean LaForet, Andre Rigaud
  • Patent number: 5002038
    Abstract: A burner construction and method of making the same are provided, the burner construction comprising a burner body having a chamber therein and having opposed ends one of which is open to the chamber and the other of which has structure for interconnecting a source of fuel to the chamber, and a removable cap closing the one end of the body, the burner construction having ports interconnecting the chamber to the exterior of the burner construction and through which the fuel can issue to burn externally to the burner construction, the burner construction comprising a removable venturi section disposed in the chamber and being removable therefrom through the open end of the body when the cap has been removed therefrom.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: March 26, 1991
    Assignee: Robert Shaw Controls Company
    Inventor: Fred Riehl
  • Patent number: 4993401
    Abstract: A cooking unit has a ceramic cooking surface, a gas burner underneath the surface, a gas supply including a solenoid valve for feeding a combustible gas to the burner, and an electric igniter juxtaposed with the burner and electrically energizable to ignite the combustible gas issuing from the burner. An electricity supply is connected to the igniter and to the gas supply for electrically energizing the igniter whenever the valve is open and supplying gas to the burner. In addition an electronic controller connected to the valve and to the electric supply monitors current consumption of the igniter and closes the valve when the current consumption of the igniter indicates same is malfunctioning. The controller includes a digital circuit that is also typically operated by the user of the cooker to turn the burners on and off and control their temperatures and an analog circuit connected parallel to each other. At least one of these circuits controls opening and closing of the valve.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: February 19, 1991
    Assignee: Cramer GmbH & Co., Kommanditgesellschaft
    Inventors: Helmut Diekmann, Gunter Krohn, Wilhelm Cramer
  • Patent number: 4986254
    Abstract: An improved bar burner is provided for use in a cooking grill having a top cooking area. The bar burner includes an elongate body having a pair of curved ends and a pair of substantially parallel sidewalls extending between the curved ends. A plurality of holes is distributed along each side wall for flowing combustible gas from the interior to the exterior of the body. Each curved end also has a plurality of holes for flowing gas to the exterior of the body. The holes in each curved end are arranged to define an end zone and a pair of angularly facing side zones. The holes in the side zones have enlarged cross-sectional areas, thereby providing improved heat rejection. The cross-sectional areas of the holes defining the angularly facing side zones are generally equal to one another and greater than the cross-sectional areas of the holes distributed along each side wall and in the end zones.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: January 22, 1991
    Assignee: Greene Manufacturing Co.
    Inventors: William G. Haen, Earle L. Pfefferkorn
  • Patent number: 4984558
    Abstract: A stove suitable for large-burner cooking generating a high heat exhaust has an enclosed stove casing with an upper cooking surface, a hollow interior, and a burner well recessed into the interior of the casing. A large burner is positioned in the burner well, and a cooking vessel can be placed over the well so as to close the burner flame off from the outside. The burner well preferably supports a wok or other rounded-bottom cooking vessel. The high heat exhaust from the burner is trapped in the well and entrained by natural convection into a duct member to a duct casing at a rear side of the stove. The duct casing has a double wall construction and baffles in its interior forming a labyrinthine channel for mixing cold air supplied through openings in the stove casing and the hot exhaust air from the large burner.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: January 15, 1991
    Inventor: Yuk L. Lok
  • Patent number: 4971024
    Abstract: A cooking hob comprises a glass top in which is disposed a plurality of gas burners and or electric hotplates, the glass top being supported on the top surface of an open-bottomed rectangular box-like structure, a base plate of which is removable for access purposes.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: November 20, 1990
    Assignee: New World Domestic Appliances Limited
    Inventors: Philip Albon, Leslie Smith
  • Patent number: 4968246
    Abstract: A heating apparatus comprising a burner including a burner body having an air-fuel mixture chamber and a burner cap formed with a plurality of flame ports, a pan formed with an opening for receiving the burner body, a top plate placed on an upper face of the heating apparatus and a trivet placed on the top plate. The burner cap includes a cylindrical portion formed with an air passage, a convex portion projecting upwardly from an inner face of the cylindrical portion and a cover member formed integrally with an upper portion of the cylindrical portion through the convex portion such that a gap is defined between an upper end of the cylindrical portion and a lower face of the cover member.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: November 6, 1990
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsumi Sasada, Nobuhide Nishiyama, Junzo Tanaka
  • Patent number: 4957096
    Abstract: A gas cooking appliance for cooking chow mein, pan cakes or the like on a hot plate mounted thereon, which cooking appliance includes a pulse combustion burner installed within as internal compartment of the appliance and having a combustion chamber coupled with a bottom portion of the hot plate to take place pulse combustion of a mixture of gaseous fuel and air supplied thereinto, wherein the hot plate is in the form of a thick metallic plate formed therein with a tailpipe passage which is connected at one end thereof to an exhaust port of the combustion chamber and extends outwardly through the metallic plate to permit the flow of combustion products discharged therethrough from said combustion chamber.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: September 18, 1990
    Inventor: Nobuyoshi Yokoyama
  • Patent number: 4954075
    Abstract: An inventive lantern head is disclosed for adapting an inverted backpacking stove to lighting use, said lantern head including fuel-burning lighting means within a glass globe, said globe and lighting means both being supported by a surrounding frame. Mounting means for engagement with said inverted backpacking stove's underside depends from beneath said frame. And, said lighting means is fed by a fuel conduit having means at its distal end for attachment to the stove's remote fuel supply and fuel flow regulator.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: September 4, 1990
    Inventor: Neal A. Francino
  • Patent number: 4944284
    Abstract: The invention relates to a portable stove and provides for the use of a horizontal platform on which a vertically oriented cylindrical housing is positioned. A plurality of burners are secured adjacent a lower portion of the housing, the burners being connected through a fuel transmitting conduit to a fuel source outside of the housing. A pair of support plates are secured within the housing above the burners with one of the plates being connected to a bar which rotates the plate, to a limited degree, about its central axis in a horizontal plane, so as to cover notches formed in the second plate by its solid surface. The second plate is also provided with a plurality of equidistantly spaced notches, which, when aligned with notches of the first plate, allow heat to directly escape through the notches to an upper portion of the housing. The stove can be used for boiling, frying and/or grilling, when desired.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: July 31, 1990
    Inventor: Vorney O'Quin
  • Patent number: 4938687
    Abstract: This invention relates to a gas cooking apparatus with a rotary burner and electrical ignition. The burner carrier (10) is inserted in the top of a rotating support (3) fitting onto a feed pipe (40) with a horizontal venturi, in relation to which it turns by means of a chain drive (53) and of a geared motor (50). The off-center burner (20) includes gas outlet nozzles over a sector of 280.degree. only and distributed symmetrically in relation to a plane in which passes the burner carrier rotation axis (10) directed towards the outside of this burner carrier. The gas outlet ducts (21) of the burner (20) make an angle of 10.degree. to 20.degree., upwards, in relation to the horizontal plane. The base of the off-center burner (20) includes radial ribs (22) distributed symmetrically over a sector identical to that of the gas outlet nozzles (21). The igniter is integral with the rotating support.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: July 3, 1990
    Assignee: Soremam S.N.C.
    Inventor: Jean-Francois Monteil
  • Patent number: 4930489
    Abstract: This invention is directed to a flame switchable gas burning device, adapted to be mounted or attached within the oven cavity of a gas stove, which provides an improved gas stove having control of the flame switching air and the convection cooking air. Such control is achieved by providing a shunt air path which may have one or more controlled dampers and a blower with variable and controllable speed. In another embodiment the combustion gases and the cooking air are kept separate by incorporation of a counterflow heat exchanger making the device indirect fired. In the indirect fired embodiment steam may be controllably introduced into the oven cavity to further speed the baking/cooking time. The improved gas oven can, within the one oven cavity, operate in the broil, bake, steam cook, and self-clean mode without the need for multiple burners or multiple oven cavities and without the need for manually operated baffles or dampers.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: June 5, 1990
    Assignee: Gas Research Institute
    Inventor: David H. McFadden
  • Patent number: 4919116
    Abstract: A gas burner element includes a diffusion chamber and a plurality of burner arms extending from the chamber, the chamber and the arms having a plurality of holes for flowing gas therethrough. A support member is received in the underside of each of the arms for adjustably mounting the element in a spaced relationship from a burner kettle and for maintaining the relationship when mounting is complete. Each support member includes an upper, generally vertical shaft threadably engaged to its associated arm and a lower foot portion disposed radially to the shaft. The spaced relationship between the burner kettle and the burner element are adjustable by rotating the support member in one direction or another, thereby extending or retracting a support member with respect to its related burner arm.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: April 24, 1990
    Assignee: Greene Manufacturing Co.
    Inventor: Earle L. Pfefferkorn
  • Patent number: 4919110
    Abstract: A gas cooking appliance for cooking chow mein, pan cakes or the like on a hot plate mounted thereon, which cooking appliance includes a pulse combustion burner installed within an internal compartment of the appliance and having a combustion chamber coupled with a bottom portion of the hot plate to take place pulse combustion of a mixture of gaseous fuel and air supplied thereinto, wherein the hot plate is in the form of a thick metallic plate formed therein with a tailpipe passage which is connected at one end thereof to an exhaust port of the combustion chamber and extends outwardly through the metallic plate to permit the flow of combustion products discharged therethrough from said combustion chamber.
    Type: Grant
    Filed: July 25, 1988
    Date of Patent: April 24, 1990
    Assignee: Paloma Kogyo Kabushiki Kaisha
    Inventor: Nobuyoshi Yokoyama
  • Patent number: 4899723
    Abstract: A cooking and heating stove capable of operating on either gaseous fuel or electricity has a combination burner construction consisting of an annular metal plate with an electrical resistance heater located in recessed grooves on the undersurface, and a ceramic gas distributor int he central opening of the plate. Separate controls on a common housing are provided for the gas and electrical parts of the burner assembly.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: February 13, 1990
    Assignee: Industrias Fenix S.A.
    Inventor: Luis R. Pajares
  • Patent number: 4896652
    Abstract: A cellular base member is disclosed for use, in particular, with a barbeque grill. The preferred base member is made of ceramic and provided in a honeycomb shape. When fixedly disposed between the heat source and the cooking surface of a barbeque grill, the disclosed cellular base member retains and evenly radiates heat to the cooking surface. Furthermore, should any fatty food substance or the like fall from the cooking surface, the cellular base member vaporizes such food substance before it reaches the heat source, thereby eliminating the problem of flame flare-up.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: January 30, 1990
    Assignee: Applied Ceramics, Inc.
    Inventor: Robert A. Geiter
  • Patent number: 4886044
    Abstract: A hollow, upright cabinet supports therein a cooking grid and a plurality of upwardly facing gas burners which emit infrared head toward the cooking grid. A shield assembly having angled baffles is removeably mounted over the burners to shield the meat directly above the burners on the grid from the infrared rays and protects the burners from the drippings of the meat. The spaced baffles however permit the infrared radiation to pass upwardly, at an angle to impinge on meat at the rear of the grid.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: December 12, 1989
    Inventor: Willie H. Best
  • Patent number: 4886043
    Abstract: A gas burner comprises a burner skirt (1) supporting a burner head (5) provided with combustion ports (6). A plate (9) notched at the edges allows part of the combustion mixture to escape around the bottom of the burner head and burn to form a retention flame below the main combustion ports (6). The flow of gas to the retention flame is metered by metering apertures formed by the bottom of the burner head and the notches in the plate (9). This construction allows the skirt to be made simply and inexpensively from materials such as mild steel, and to be vitreous enamelled, without sacrificing accuracy of metering of the supply to the retention flame.
    Type: Grant
    Filed: September 13, 1988
    Date of Patent: December 12, 1989
    Assignee: Parkinson Cowan Ltd.
    Inventor: David W. Homer
  • Patent number: 4869231
    Abstract: An improved cooktop mounting arrangement for a range with an upswept lift-up cooktop including a pair of upper pivot members extending from opposite sides of the upswept section of the cooktop, a pair of spaced lower pivot members extending from opposite sides of the cooktop near the intersection of the upswept section and the cooking surface section, and corresponding upper and lower guides supported from the main range body. The upper and lower guides are cooperatively configured to respectively simultaneously guide the upper pivot members through a vertically oriented arcuate path extending downwardly and forwardly and to guide the lower pivot members through a horizontally oriented path extending generally forwardly and upwardly as the cooktop moves from its lowered position to its raised position.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: September 26, 1989
    Assignee: General Electric Company
    Inventors: Frank L. Rice, David L. Kinny
  • Patent number: 4850335
    Abstract: A top burner for a gas cooking range includes a burner vent having a radially upwardly sloping wall surrounding the burner head. An annular ring projects upwardly from an inner radial extremity of the wall to direct combustion products from the burner head into immediate scrubbing contact with the bottom of a cooking utensil. The wall terminates at an outer radial extremity adapted to be located in sufficiently close proximity with the bottom of the cooking utensil to restrict radially outward flow of combustion products. Capture ports adjacent the outer radial extremity of the wall exhaust combustion products through a vent pipe to the atmosphere at a positive pressure. A range oven/broiler may also be connected to the vent pipe to provide a fully vented range.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: July 25, 1989
    Assignee: Gas Research Institute
    Inventors: Craig A. Farnsworth, Alice Waters