...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
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| Number | Title | Issue Date |
| 8122875 | Burner assembly for gas burners of radiant heating type A burner assembly for a radiant heating type gas burner is provided. The burner assembly includes a burner chamber that receives a mixed gas, a burner mat on top of the burner chamber for making combustion, and a baffle part between a bottom of the burner mat and a ... | 02/28/2012 |
| 7926479 | Infrared wok heater An infrared heater for heating a cooking vessel, such as a Chinese wok. The heater includes a block of refractory material, which emits infrared radiation upon heating to an elevated temperature, forming an inverted frustum-shaped cavity or opening. A gas-fired burn... | 04/19/2011 |
| 7300278 | Gas fired portable unvented infrared heater A portable heater adapted for use in a recreational enclosure or temporary work enclosure includes a housing having an air inlet on the lower front face. A gas supply is at least partially enclosed by the housing which provides propane to the mouth of a burner ventu... | 11/27/2007 |
| 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 |
| 7234932 | Outdoor gas fireplace A fireplace for viewing outside of a house or other structure that includes a combustion chamber defined by a combustion chamber enclosure with a front opening and a front panel at least partially enclosing the front opening. The front panel is partially surrounded ... | 06/26/2007 |
| 7146975 | Gas fire log system with collapsing logs A realistic gas fire log system providing log movement during use to enhance the realism of a fireplace system, comprising a ceramic fiber top, molded to look like charred embers or ash ported with one or more holes and recessed at the bottom to form a cavity, a ste... | 12/12/2006 |
| 7117866 | Multi-faceted grill A grill having a top wall design incorporating a heat source that efficiently radiates heat towards the cooking cavity but allows the escape of flue gases and hot air towards the rear of the grill to protect the user. The grill has an access to the interior of the c... | 10/10/2006 |
| 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 |
| 7056113 | Gas light systems and methods of operation A gas light assembly including a stand member having a recessed portion sized to receive a fuel container. The recessed portion is accessible through an opening of the stand member. A panel member is coupled to the stand member and movable between a closed position ... | 06/06/2006 |
| 7047963 | Apparatus and method for simulated campfire A portable campfire apparatus has a base, a fire pan supported by the base, a gas manifold disposed in the fire pan and a quantity of low-density, non-flammable particulate material in the fire pan at a depth to cover the manifold. The fire pan and the base are subs... | 05/23/2006 |
| 7013886 | Plastic shell heater A plastic shell heater utilizing multiple deflectors and vents at the top of interior of a portable heater to direct the heat away from the surface of the heater. This dramatically lowers the temperature of the external surfaces of the heater and allows the use of p... | 03/21/2006 |
| 6997176 | Quick and easy campfire A quick and easy to use campfire, fueled by portable bottles of propane gas connected through a variable high-pressure regulator that is used to adjust the fireball size. The burner assembly is a round tube used as a manifold and bent in an annular shape using the s... | 02/14/2006 |
| 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 |
| 6953335 | Method and apparatus for reducing nitrogen dioxide (NO2) emissions in a flueless heating appliance An apparatus for reducing nitrogen dioxide emissions in a flueless heating appliance or heater includes a heat-exchanger for exchanging heat contained in fumes produced by the combustion of a fuel in the heating appliance. A heating appliance or heater without a fum... | 10/11/2005 |
| 6926517 | Apparatus and method for simulated campfire Apparatus for simulating a campfire includes a fire pan, a diffuser element in the pan interior and a gas injector extending into the interior. The gas injector has an outlet that introduces vaporized fuel so that the diffuser element disperses the vaporized fuel ab... | 08/09/2005 |
| 6926520 | Heater for outdoors An improved structure of a heater for an outdoor table is disclosed. The heater has a base seat mounted with an isolation plate, a pair of semi-stacking male tubes with multiple corners and a screw nut with a circular press plate at the top end thereof, and the two ... | 08/09/2005 |
| 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 |
| 6907192 | Hybrid hotair heater If both the electric heaters and combustion heaters constitute a hybrid type hot-air heater wherein both heaters are equipped with inlets adjacent to each other and are also housed within a frame and separated such that the air blowing systems of each heater are ind... | 06/14/2005 |
| 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 |
| 6779519 | Cover sheet for rotisserie burners A Infrared or mesh burner having a flat sheet (or cover sheet) of heat resistant glass or metal is positioned between the food to be cooked and the mesh burner. The cover sheet is held in position with brackets that have grooves that allow the cover sheet to be fric... | 08/24/2004 |
| 6763824 | Far infrared barbecue stove A far infrared barbecue stove structure is disclosed. The stove comprises a stove body, at least a gas burner, at least an infrared ceramic radiation plate, and a plurality of high temperature resistance ceramics rods which can be mounted on an opening cavity on the... | 07/20/2004 |
| 6761558 | Heating apparatus using thermal reaction of brown gas The present invention relates to a heating apparatus using thermal reaction of brown gas. After brown gas generated from a brown gas generator passes hexane liquid in a flame arrester, it is burnt in a brown gas burner located at a lower portion of a heating element... | 07/13/2004 |
| 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 |
| 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 |
| 6669467 | 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 ... | 12/30/2003 |
| 6666205 | Upright heating burner having a heatsink device background of the invention An upright heating burner having a heatsink device includes an upright stand, an upright tube, a burner, an air guide cylinder, and a heatsink device. The heatsink device is mounted on a top of the air guide cylinder and includes an annular support seat, ... | 12/23/2003 |
| 6659765 | Infrared rays gas burner An infrared rays gas burner comprises a main member having a box which has a base seat and a cover, two non-asbestos pads, ceramic planks and guiding device. The non-asbestos pads is mounted the base seat and the ceramic planks rests on the non-asbestos p... | 12/09/2003 |
| 6651647 | Heating apparatus with slidable shroud A heating apparatus includes a burner assembly for igniting fuel from a fuel source, an upper housing for the burner assembly, and an elongate support member extending upwardly to the burner assembly housing to space the housing from ground level. A shrou... | 11/25/2003 |
| 6612835 | High-temperature, non-catalytic, infrared heater A high-temperature, non-catalytic, infrared heater is formed within a housing having a bottom and at least one side lined with a refractory material. The burner includes a burner surface area and is positioned within the housing. A re-radiating surface is... | 09/02/2003 |
| 6602068 | Burner assembly for a gas-burning fireplace A burner assembly that overcomes problems experienced in the prior art. One embodiment provides a burner assembly for burning a fuel gas from a gas source. The assembly has a burner body with a contoured upper surface and a burner pan with a gas inlet ape... | 08/05/2003 |
| 6514071 | Emitter apparatus A gas-fired infrared radiation emitter with a frame, a screen removably attached to the frame, and a device for locking the screen to the frame. At least three receptacles are connected to each side of the frame, and at least one support is connected to e... | 02/04/2003 |
| 6488025 | Portable campfire The portable campfire includes a firebox with side walls, a bottom wall and an open top. A drip pan, with a floor that slopes downward and radially inward from a supporting ring to a discharge passage, is mounted in the firebox. A burner is mounted in the... | 12/03/2002 |
| 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 |
| 6443726 | Burner assembly for a gas-burning fireplace A burner assembly that overcomes problems experienced in the prior art. One embodiment provides a burner assembly for burning a fuel gas from a gas source. The assembly has a burner body with a contoured upper surface and a burner pan with a gas inlet ape... | 09/03/2002 |
| 6443725 | Apparatus for generating energy using cyclic combustion of brown gas An energy generating apparatus using the cyclic combustion of Brown gas is disclosed. The apparatus comprises a heat generating unit, an outer wall, a Brown gas generator, an open-shut valve and a burner. The heat generating unit is positioned on a base. ... | 09/03/2002 |
| 6435861 | Gas burner assembly and method of making An improved gas burner for a gas burner assembly and method of making is disclosed comprising a porous burner element extending between a first and a second end. The porous burner element comprises a sintered matrix of metallic fibers. A first end cap is ... | 08/20/2002 |
| 6431856 | Catalytic combustion apparatus In order to realize a catalytic combustion apparatus capable of effectively utilizing radiation from a surface of a catalytic element, providing a higher efficiency of heat exchange, and characterized in superior characteristics of an exhaust gas, a catal... | 08/13/2002 |
| 6293275 | High-temperature gas heater A compact heat source is provided which includes a bell-shaped or conical recuperator that surrounds a combustion chamber. The recuperator consists of parts that are axially tensioned against one another, so that a stable positioning of a partition wall p... | 09/25/2001 |
| 6289887 | Artificial campfire device An artificial campfire device is disclosed and is fueled by a pressurized fuel source. The device includes a base receptacle which defines an open top, the base receptacle being adapted for placement on a ground surface. A burner member is positioned with... | 09/18/2001 |
| 6227843 | Portable gas campfire A gas-fired portable campfire includes a base container, a gas burner tube mounted into the base container, and non-flammable low-density particulate insulating filler mountable into the base container so as to cover the gas burner. The gas burner tube ha... | 05/08/2001 |