William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 8434469 | Gas-fired portable unvented infrared heater A portable radiant heater supplied by an associated fuel source comprises a housing having a handle for transporting the heater. A plenum in the housing receives fuel from the associated fuel source and mixes the fuel with air. A burner assembly includes a radiant s... | 05/07/2013 |
| 8176910 | Parasol heater with tilting parasol A parasol heater comprising a moveable dish provided above a gas burner, wherein the dish is pivotably coupled to a first side of the burner, the heater comprising an actuator coupled to the dish and configured in use to effect movement of the dish relative to the g... | 05/15/2012 |
| 8047197 | Heat deflecting system A heat deflecting system includes a heater with a pole, a heat emitting member attached to an apex of the pole and a cover that is attached to the heat emitting member. The cover has a circular perimeter edge that extends outwardly from the heat emitting member. A p... | 11/01/2011 |
| 7886734 | Infrared remote controlling warm stove The present invention discloses an infrared remote controlling warm stove for outdoor warming which includes head, hollow upright post and base. The head comprises air mixing chamber, infrared hood, reflex hat, baffle, burner assembly and burner controlling device t... | 02/15/2011 |
| 7342203 | Oven chamber including shielding member In one example, an oven chamber has a heating element located within a first section of the oven chamber, and includes a shielding member that extends over the first section of the oven. The shielding member has an outer boundary, and one or more portions of the out... | 03/11/2008 |
| 7278418 | Radiant heat deflector assembly The present invention is a radiant heat deflector assembly for radiating heat on a surface, wherein the assembly includes; a radiant heat source radiating direct emissions, and at least one radiant heat deflector spaced from the heat source. The heat source is so po... | 10/09/2007 |
| 7252503 | Wind-proof venturi tube A venturi tube has a configuration of baffles affixed thereto that serve to greatly reduce the susceptibility of a gas burning appliance to wind gusts. The baffles cooperate to force incoming primary combustion air through a circuitous route before introduction into... | 08/07/2007 |
| 7241977 | Cooking apparatus and method therefor An apparatus for cooking a food item therein is disclosed. The apparatus has a housing defining an interior and includes at least first and second opposed walls. A rotating member is positioned between the first and second walls of the housing, and the rotating memb... | 07/10/2007 |
| 7175424 | Indoor/outdoor patio heater fire sculpture The present invention is an indoor/outdoor patio heater which includes a base portion housing a gas source, a gas burner, gas valve, a fan under the burner to create twisting flame patterns and a liquid pump, a pair of concentric see-through tubular portions dispose... | 02/13/2007 |
| 7160103 | Method and apparatus for modifying the path of a flame An apparatus and method for modifying the appearance of a flame to maximize the size of the flame for a given amount of fuel, increase a burn rate efficiency of the flame, or change the shape of the flame. The shape and size of the flame may be modified by applying ... | 01/09/2007 |
| 7116900 | Radiant energy source systems, devices, and methods capturing, controlling, or recycling gas flows This document discusses, among other things, systems, devices, and methods that increase radiant energy output, such as by using the waste airflow of combusted gas and/or ambient airflow resulting from convection, or by reducing or avoiding cooling effects of such a... | 10/03/2006 |
| 7086396 | Heating apparatus A heating apparatus is provided that is optimized in terms of its heating efficiencies and wind proofing against flame out. The heating apparatus includes a heating head and a burner assembly for igniting fuel from a fuel source. The heating head has a dual-walled c... | 08/08/2006 |
| 7086855 | Apparatus having improved wind resistance that is a synergistic combination of a windshield and a brooder heater pilot assembly The invention is an apparatus that is a synergistic combination of a windshield and a pilot light assembly for a gas burner heater. The apparatus provides reliable operation of the gas burner heater in high air flow conditions, where the air flow would normally caus... | 08/08/2006 |
| 7060942 | Cooking apparatus and method therefor An apparatus for cooking a food item therein has a housing defining an interior and includes at least first and second opposed walls. A rotating member is positioned between the first and second walls of the housing, and the rotating member is capable of engaging an... | 06/13/2006 |
| 6971380 | Cylindrical catalytic heater A catalytic heater with a cylindrical combustion chamber. The catalytic heater may be positioned centrally to provide heat for a number of people or an area. A reflective top is movable to along a side of the cylindrical combustion chamber for directing the heat in ... | 12/06/2005 |
| 6932079 | Radiant energy source systems, devices, and methods capturing, controlling, or recycling gas flows This document discusses, among other things, systems, devices, and methods that increase radiant energy output, such as by using the waste airflow of combusted gas and/or ambient airflow resulting from convection, or by reducing or avoiding cooling effects of such a... | 08/23/2005 |
| 6907875 | Outdoor heater and method of assembling same An outdoor heating apparatus, for warming the ambient air of a pre-selected area, includes a movable table attachment. The height-adjustable tabletop ergonomically enhances the surrounding area to accommodate the needs of various users, and an optional sectional hea... | 06/21/2005 |
| 6872072 | Gas fired radiant heating unit and method of operation thereof A heating unit has a cartridge that constitutes a single component, which can be readily removed and replaced with a new cartridge. The cartridge is a plurality of non-flammable layers bound together in a border. The layers include a stainless steel mesh located abo... | 03/29/2005 |
| 6827079 | Apparatus and method for reducing peak temperature hot spots on a gas fired infrared industrial heater A radiant heating system including at least one gas burner and at least one conduit connected to the at least one burner on one end and connected to at least one exhaust tube at an opposite end for transporting hot exhaust gas. Heat is transferred via conduction to ... | 12/07/2004 |
| 6745759 | Knock-down dome cover for a patio heater The present invention provides a dome cover for a outdoor heater that is made up of a plurality of sides. Each side has at least three edges, a first edge is a finished edge, a second edge includes at least a first complementary fastener portion and a third edge inc... | 06/08/2004 |
| 6742814 | Miniature patio heater A miniature patio heater is provided which has a total height of approximately 3 ft. and which has a shroud with a diameter less than 2 ft. The patio heater includes a base having a vertically extending chamber, which is approximately 1.5 ft. high, for receiving a s... | 06/01/2004 |
| 6668818 | Safety guard for patio heater The present invention provides a dome guard for a dome cover having an inside surface, an outside surface and a rim. The dome guard includes a heat resistant grid, at least one standoff for holding the dome guard a first predetermined distance from the do... | 12/30/2003 |
| 6619281 | Miniature patio heater A miniature patio heater is provided which has a total height of approximately 3 ft. and which has a shroud with a diameter less than 2 ft. The patio heater includes a base having a vertically extending chamber, which is approximately 1.5 ft. high, for re... | 09/16/2003 |
| 6575154 | Gas-fired, infrared, warmer A gas-fired, infrared, food warmer having a gas-fired, infrared, burner adjustably mounted above a surface for supporting food. A reflector encloses the burner and is open at the bottom to expose the food supporting surface to the infrared heat directly f... | 06/10/2003 |
| 6550470 | Portable gas burner with detachable reflector and base A portable gas burner in which the base is comprised of a hollow disk-like shell and a plurality of sector plates detachably fastened to one another and to the periphery of the disk-like shell by screws; the reflector is comprised of a reflector disk and ... | 04/22/2003 |
| 6499480 | Heater with light A heater provides both radiant heat and light. The heater provides radiant heat via a heater assembly which includes a gas burner heating a screen; the screen in turn provides radiant heat. The heater includes a light assembly which may provide light by, ... | 12/31/2002 |
| 6470877 | Heating apparatus A heating apparatus is provided which is improved in terms of its heating efficiencies over prior commercially available patio heaters. The heating apparatus includes a burner assembly housing containing a burner assembly for igniting fuel from a fuel sou... | 10/29/2002 |
| 6425390 | Unvented heating appliance having system for reducing undesirable combustion products A heating appliance including a firebox having an inlet and an outlet, the firebox inlet and outlet in communication with a space containing ambient air and within which the appliance is located. A gas burner is disposed within the firebox and provides a ... | 07/30/2002 |
| 6422232 | Heater with light A heater provides both radiant heat and light. The heater provides radiant heat via a heater assembly which includes a gas burner heating a screen; the screen in turn provides radiant heat. The heater includes a light assembly which may provide light by, ... | 07/23/2002 |
| 6397835 | Portable gas burner A portable gas burner having a swivel bracket mounted inside the housing thereof to hold a gas pressure regulator adapted to receive a gas can, and a tilting switch fixedly mounted on the swivel bracket adapted to control on/off of a gas switch that contr... | 06/04/2002 |
| 6336450 | Terrace heating device A terrace heating device includes a reflector (7) for reflecting rising heat from a heater (8) downward toward patrons on a terrace. An umbrella-like cover (10) is arranged on a support pole above the heater. The umbrella-like cover is articulable between... | 01/08/2002 |
| 6334439 | Tubular heat exchanger for infrared heater A tubular heat exchanger for an infrared heater which facilitates the packaging and transportation of such heater. The tubular heat exchanger is formed as a plurality of discrete heat transfer subsections which are typically separately assembled, and then... | 01/01/2002 |
| 6328559 | Radiant heater apparatus for post-forming thin acrylic sheets A method and apparatus for post-forming an acrylic sheet using radiant heat are disclosed. The heating apparatus includes radiant heating tubes mounted to a frame and positioned in a heating plane. A support platform is also mounted to the frame. A heatin... | 12/11/2001 |
| 6286500 | Heaters A space heater capable of providing both radiant and blown warm air heating to a space beneath the heater. The heater comprises a housing, the underside of which is recessed to define a channel in which a combustion tube is mounted. The heater has a burne... | 09/11/2001 |
| 6269809 | Low emission fireplace This invention relates to heating apparatus and particularly compact heating apparatus fuelled by a flammable fluid such as gas in which a visible flame is provided. The appearance of the visible flame and the fireplace setting within the heating apparatu... | 08/07/2001 |
| 6216687 | Unvented heating appliance having system for reducing undesirable combustion products A gas-fueled heating appliance having a system for reducing the amount of undesirable combustion products released to the site in which the appliance is installed. The appliance includes a firebox partially surrounded by a heat exchanger. Ambient air is d... | 04/17/2001 |
| 6192878 | Heating apparatus A heating apparatus is provided which is improved in terms of its heating efficiencies over prior commercially available patio heaters. The heating apparatus includes a burner assembly housing containing a burner assembly for igniting fuel from a fuel sou... | 02/27/2001 |
| 6164273 | Heating apparatus A heating apparatus is provided which is improved in terms of its heating efficiencies over prior commercially available patio heaters. The heating apparatus includes a burner assembly housing containing a burner assembly for igniting fuel from a fuel sou... | 12/26/2000 |
| 6138662 | Heaters The invention provides a radiant heater comprising a radiative heating element (15, 16); a housing (1), the underside of which is recessed to receive the radiative heating element (15, 16), the radiative heating element being disposed beneath the housing ... | 10/31/2000 |
| 6123066 | Low emission fireplace This invention relates to heating apparatus and particularly compact heating apparatus fuelled by a flammable fluid such as gas in which a visible flame is provided. The appearance of the visible flame and the fireplace setting within the heating apparatu... | 09/26/2000 |