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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 7766006 | Dual fuel vent free gas heater A dual fuel vent free gas heater having at least one gas burner with a plurality of gas outlet ports in an upper surface thereof. The gas outlet ports are in flow communication with at least one pilot flame burner. An adjustable fuel injector or at least two fuel in... | 08/03/2010 |
| 7100597 | Modular burner/blower system and method A modular burner/blower system and method directed to an independently operable direct fired burner unit and an independently operable blower unit that are also configured to be interconnected to one another and to operate together. The direct fired burner unit incl... | 09/05/2006 |
| 7066170 | Apparatuses and methods for balancing combustion air and exhaust gas for use with a direct-vent heater appliance A combustion air and exhaust gas balancing system for use with a direct-vent heater appliance. The balancing system includes a combustion air valve in fluid communication with a combustion air duct and an exhaust gas valve in fluid communication with an exhaust gas ... | 06/27/2006 |
| 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 |
| 6889686 | One shot heat exchanger burner A single burner, heat exchanger combination for particular use in a hot air furnace, includes a plurality of spaced heat exchangers, each heat exchanger having an inlet port for receipt therein of combustion gases. A unitary burner for producing combustion gases inc... | 05/10/2005 |
| 6793015 | Furnace heat exchanger A furnace heat exchanger with multiple parallel flow passages wherein at least one flow passage has a cross-sectional shape which transitions from one form to another in a gradual manner so as to reduce the occurrence of stress therein. In one embodiment, the transi... | 09/21/2004 |
| 6769425 | Fuel-fired furnace with combustion air-cooled draft inducer fan motor A fuel-fired, forced draft air heating furnace has a draft inducer fan disposed in a vestibule chamber having an exterior wall with an air intake opening therein. During operation of the draft inducer fan its motor is cooled by combustion air drawn inwardly through ... | 08/03/2004 |
| 6684878 | Condensate drainage system for an outdoor condensing furnace An outdoor condensing furnace is provided with a condensate drain line which passes through the heat exchange compartment and to a location within the building where it can be discharged at temperatures above freezing. During heating operation, the drain ... | 02/03/2004 |
| 6497570 | Gas control assembly A gas control assembly for a forced air furnace which includes a support frame having a top surface and two contiguous side walls which define an enclosure. A planar one piece burner assembly which has a plurality of burners and having two opposite side e... | 12/24/2002 |
| 6494199 | Multipoise furnace cabinet A multipoise furnace cabinet includes right and left sides with top and bottom plates connecting upper and lower parts of the right and left sides together. In one embodiment, top and bottom plates include vent cutouts. A side of the top plate has a first... | 12/17/2002 |
| 6491514 | Furnace burner box assembly with reduced acoustic emissions A burner box assembly for a combustion air furnace includes a back wall, opposed side walls and top and bottom walls defining an interior space for one or more burner nozzles. A combustion air inlet opening is formed in the top wall and is covered by a ge... | 12/10/2002 |
| 6474329 | Cell panel for furnace A one piece cell panel for a forced air furnace which is designed for ease of removal without the necessity of having to dismantle the furnace cabinet. The panel includes a substantially vertically disposed upper section which contains a plurality of cell... | 11/05/2002 |
| 6470878 | Furnace heat exchanger A furnace heat exchanger with multiple parallel flow passages with at least two of the passages being partially formed of a pair of opposed sidewalls having wavy cross-sectional shapes wherein the downstream passage has at least as many and preferably mor... | 10/29/2002 |
| 6318358 | Furnace blower with double sided impeller A blower for a furnace is provided where the blower has an impeller that is configured to create a primary air flow of combustion air into the blower housing and a secondary air flow of cooling air through the blower motor. The primary air flow of combust... | 11/20/2001 |
| 6289685 | Air conditioner with combustion heater for refrigerant A compressor, an outdoor heat exchanger, an indoor heat exchanger, and the like are connected to each other with refrigerant piping to form a refrigerant circuit in a closed loop configuration. The refrigerant circuit is provided with a four-way switch va... | 09/18/2001 |
| 6223740 | Fuel-fired furnace with self-cooling draft inducer fan A gas-fired forced draft air heating furnace is provided with a specially designed self-cooling draft inducer fan that overlies an inshot-type burner section of the furnace and is operatively supported on a heat exchanger plenum portion of the furnace hou... | 05/01/2001 |
| 6109254 | Clamshell heat exchanger for a furnace or unit heater A clamshell heat exchanger (10) is provided for use in a heating apparatus including a burner for producing hot combustion gas. The heat exchanger (10) defines a multi-pass flow passage (11) for the combustion gas and includes a first plate member (30) an... | 08/29/2000 |
| 6014966 | Heat transfer unit for a furnace exhaust vent A heat exchange device for harnessing heat from an exhaust vent is provided including a furnace having a main inlet for receiving cooled air suctioned from a living area, a heating mechanism for heating the cooled air suctioned from the living area, a mai... | 01/18/2000 |
| 6006741 | Secondary heat exchanger for condensing furnace A secondary heat exchanger suitable for use in a condensing furnace which is in the form of a bank of a plurality of metal tubes which are positioned in a plurality of stacked rows. The tubes are interconnected to form a continuous fluid flow path and hav... | 12/28/1999 |
| 5979433 | Heater A heater for heating a stream of air has a burner assembly to heat the stream as it flows along a flow path and a primary heat assembly positioned in the flow path and coupled to the burner assembly for conducting gaseous combustion products. The primary ... | 11/09/1999 |
| 5775318 | Forced air condensing furnace and heat exchanger manifold therefor A heat exchanger manifold (44) is provided which includes a plurality of manifold inlet openings (58) including sealant means such as grommet means (62) which receive the tube outlets (40c) of the condensing section (34) of a heat exchanger (28). The heat... | 07/07/1998 |
| 5738084 | Ventless patio fireplace An unvented patio fireplace comprises a fireplace housing that has a front panel configured like an in room fireplace, and which fireplace housing is mounted onto a pedestal and base support for movement along a surface. The base support includes wheels a... | 04/14/1998 |
| 5623988 | Polymeric heat exchanger with ceramic material insert A heat exchanger for use as a condensing heat exchanger in a gas-fired hot air furnace has a ceramic pipe forming an initial portion of a fluid flow path through the heat exchanger. The ceramic pipe receives the combustion gases from a primary heat exchan... | 04/29/1997 |
| 5560350 | High efficiency, forced hot air heater which humidifies and cleans the air A compact, non-polluting, extremely energy-efficient, through-the-wall vented forced hot air heater, which humidifies and cleans said hot air without any additional equipment or water supply, comprises a rotating cylindrical heat and moisture transport/st... | 10/01/1996 |
| 5531212 | Multi oil furnace A multi oil furnace is disclosed wherein the external cabinet shell houses a central burner chamber, an upper bank of conduits and a lower bank of conduits. Headers operably coupling the burner chamber, the upper and lower banks of conduits and a discharg... | 07/02/1996 |
| 5524606 | Air heater Air heater comprising a gas burner and heat exchange means including at least one heat-exchange wall which separates a first passage for flow of air to be heated from a second passage for flow of the flue gases produced by the burner, the air to be heated... | 06/11/1996 |
| 5494026 | Dome connecting structure of external combustion hot stove for blast furnace A connecting structure of a blast furnace hot stove of the type in which a heat accumulation chamber dome and a combustion chamber dome are directly connected to each other through a dome connecting pipe which does not have any expansion joint. The ratio ... | 02/27/1996 |
| 5482027 | Partitioned bisector regenerative air heater A furnace apparatus which includes a plurality of water walls. Each includes a plurality of tubes and the water walls collectively enclose a combustion chamber. The apparatus includes a plurality of windboxes, each of the windboxes is disposed intermediat... | 01/09/1996 |
| 5392761 | Blower mounting arrangement for forced air furnace A forced air furnace has its blower mounted on a blower shelf beneath the heat exchanger, by screws that enter aligned clearance holes in the blower mounting flanges and blower shelf and which engage gripper holes in a bottom lip of the vertical cell pane... | 02/28/1995 |
| 5375586 | Condensate isolator and drainage system for furnace The present invention involves a gas furnace having a condensate trap formed in the transition box between the secondary heat exchanger and the exhaust blower. The gas furnace includes gas burners which burn fuel within the passageways of the heat exchang... | 12/27/1994 |
| 5368010 | Multi-position forced air furnace A single forced air furnace (10) may be installed in any of an upflow, downflow, or horizontal airflow orientation, with discharge of flue gases either opposite to or concurrent with the primary airflow path. The combination of design features which provi... | 11/29/1994 |
| 5359989 | Furnace with heat exchanger A furnace includes at least one heat exchanger with first and second plate members secured together to define passageways that form serpentine flow paths between an inlet passageway and an outlet passageway. The inlet passageway receives hot products of c... | 11/01/1994 |
| 5341795 | Inducer for condensing furnace An inducer (40) for causing a flow of combustion air into and gases of combustion through and out of a furnace (10) of the condensing type. The inducer is intended for use, without modification of its design or size, in a series of furnaces of the same ba... | 08/30/1994 |
| 5333598 | Unit heater and heat exchanger therefor Poor heat exchange in a heat exchanger between a flue gas passing through the heat exchanger and air being forced through the heat exchanger can be improved in a heat exchanger and combustor (30) for exchanging heat between a forced air stream and a flue ... | 08/02/1994 |
| 5324194 | Snap-in hot surface ignitor bracket A bracket for a hot surface ignitor is provided with a central opening having downwardly directed supporting arms and upwardly directed L-shaped retention arms such that the ignitor can be lockingly engaged with the bracket without creating crack-inducing... | 06/28/1994 |
| 5307800 | Afterburner for a fuel-burning heater and method of construction An afterburner positionable adjacent the discharge end of a combustion chamber of a fuel-burning heater utilizes a ring portion and a nose cone portion which are constructed as a unit out of a single piece of material. The ring portion accommodates the at... | 05/03/1994 |
| 5297729 | Furnace apparatus An improved heating system is disclosed for providing heated air to a heated space, preferably using a gaseous fuel as the energy source. The system preferably includes an air heating sub-system, a compact combustion chamber, a separate cold air supply su... | 03/29/1994 |
| 5199414 | Hammock filter for air conditioner A heating and air conditioning unit has a fan compartment containing a hammock-type filter. The hammock-type filter rests upon feet elevated above the bottom of the fan compartment so that air may flow into the fan through either the bottom panel of the h... | 04/06/1993 |
| 5178127 | Flare fitting to pump of oil burner for receiving blow out tool Means and method to reconstruct the terminal end of the fluid line adjacent the pump of an oil furnace to provide a coupling that may be opened to receive the delivery end of a pressure fluid gun to substantially eliminate oil seepage and the necessity of... | 01/12/1993 |
| 5176512 | Inshot burner cluster apparatus The improved inshot burner cluster apparatus of the present invention functions to provide combustion of a gaseous fuel and air mixture which is injected through an aperture in the inlet plate into the combustion compartment of a heat exchanger, and inclu... | 01/05/1993 |
