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| Number | Title | Issue Date |
| 7203416 | Ventilating and heating apparatus with heater shielded by tapered discharge duct The invention provides a ventilating and heating apparatus for installation in a building structure. In some embodiments, the apparatus includes a main housing in which is located a ventilating fan assembly and a heater fan assembly having a heater and a discharge d... | 04/10/2007 |
| 7190887 | Portable thermal-stratifying space heater and powerplant package A portable room heater is provided comprising an upright enclosure defining an inlet at a lower end of the enclosure, an outlet at an upper end of the enclosure, and a passageway fluidly connecting the inlet and the outlet. The portable room heater further comprises... | 03/13/2007 |
| 7143766 | Temperature controlling device for aerosol drug delivery A portable air temperature controlling device useful for warming air surrounding an aerosolized drug formulation. Warming the air of an aerosol makes it possible to reduce the diameter of aerosol particles produced by an aerosol generation device. Additionally, warm... | 12/05/2006 |
| 6973260 | Portable electric heater with vertical heated air outlet A portable electric heater producing a vertically oriented, heated exhaust air stream at an elevation above a support surface is provided. A base contacting the support surface and supporting an elongate housing in a substantially vertical position from the support ... | 12/06/2005 |
| 6959144 | Air heater with expansion containing electric heater arranged in stages Providing a hot air heater and an expansion in the air blowing passage of the hot air heater and suppressing increases in air trunk resistance even if electric heaters are arranged in this expansion in a plurality of stages prevents increases in the rotation speed o... | 10/25/2005 |
| 6945868 | Outdoor fan system A camouflaged outdoor fan system includes a housing, a fan inserted into the housing, and a camouflaged lid removably connected to the housing. The housing is buried in the ground, or in alternative embodiment, mounted to the underside of a deck, the fan is inserted... | 09/20/2005 |
| 6760543 | Heated air circulator with uniform exhaust airflow An apparatus for providing thermal energy comprising a housing defining a first interior space and a second interior space; at least one electric heating element positioned within the first interior space; and an air circulator positioned within the second interior ... | 07/06/2004 |
| 6397002 | Combination fan and heater A combination fan and heater with fan speed control operates to provide a cooling or heated flow of air at various desired temperatures and airflow speeds. A switch controls the operation of a heating assembly and a motor, to operate at a higher speed whe... | 05/28/2002 |
| 6122437 | Electric space heater with swivel mount An electric heater has a housing defining a heat-transmitting window and reflector assembly is mounted in housing that has a heat reflective surface. A heating element extends within the reflector assembly between opposite ends of the housing and radiates... | 09/19/2000 |
| 5655055 | Omnidirectional space heater having adjustable, arcuate baffles A portable forced air space heater having a three hundred sixty degree peripheral dispersion pattern. The heater has a tubular housing and a fan forcing air past a heating element upwardly within the housing. The air encounters a conical deflector which r... | 08/05/1997 |
| 5513296 | Air heater with angled PTC heaters producing diverging heated airflow A positive temperature coefficient (PTC) heater includes a housing, a fan mounted within the housing, a pair of positive temperature coefficient (PTC) heater assemblies disposed in the housing, and a plenum mounted in the housing. The housing includes a f... | 04/30/1996 |
| 5482657 | Heater attachment for evaporative cooler A heater attachment for an evaporative cooler having an axial airflow fan (10), in which the airflow is divided by an element mount (18) into an inner airflow in alignment with the hub area of the fan, and an outer airflow surrounding the inner airflow. T... | 01/09/1996 |
| 5463203 | Vehicle heater A vehicle heater adapted to be plugged into a conventional car cigarette lighter. The vehicle heater includes an adapter for plugging the invention into a cigarette lighter, a switch for turning the heater on, a clock for setting a timer to turn the heate... | 10/31/1995 |
| 5303325 | Air heater An air heater is used to supply sterile air to an aseptic system for packaging food products. The air heater has an electrical heating element disposed within a tube, and the rate of air flow through the tube is adjustable. The air heater eliminates sourc... | 04/12/1994 |
| 5259062 | Air treatment apparatus utilizing interchangeable cartridges A single device adaptable to alter any one of a variety of air characteristics such as temperature, humidity, ion content, odor, etc. Several interchangeable cartridges are provided. Each cartridge has an apertured support structure, an air treatment elem... | 11/02/1993 |
| 5245692 | Portable hemispheric electric space heater with circumferential filtered warm air discharge An electric space heater includes a hemispherical enclosure in which is positioned a blower arranged to draw air in through air inlets proximate the pole of the hemisphere for discharge through a plurality of air discharge outlets around the circumference... | 09/14/1993 |
| 5197112 | Fixed volume PTC air heater with heat output adjusted by a damper controlling air flow over the PTC element An electric forced air heating device using PTC elements for heating and having a fixed volume of airflow established by a blower driven at a constant rate. A pair of parallel air paths are established in the device, with one air path having the PTC eleme... | 03/23/1993 |
| 5133042 | Air treatment apparatus utilizing intercangeable cartidges A single device adaptable to alter any one of a variety of air characteristics such as temperature, humidity, ion content, odor, etc. Several interchangeable cartridges are provided. Each cartridge has an apertured support structure, an air treatment elem... | 07/21/1992 |
| 5121463 | Hot air pulse generator for blowing out heated air in a pulse-like manner A hot air pulse generator, particularly for use as a hair dryer, includes a housing enclosing an electric heater and air blower for generating a continuous flow of heated air through a passageway leading to a nozzle. A gently curved baffle arranged across... | 06/09/1992 |
| 4703153 | Electric heater employing semiconductor heating elements An electric heater employs plate-shaped heating elements, each consisting of a core of semiconductor material whose opposing faces are coated with conductive material and having a multiplicity of apertures to permit passage of air. The heater includes a h... | 10/27/1987 |
| 4694142 | Electric air heater An electric forced-convection air heater consisting of an axial fan and a cage-shaped resistance heating element mounted up-stream of the fan impeller, which serves to heat the air passing there through and to guide the air stream smoothly to the impeller... | 09/15/1987 |
| 4384189 | Convection radiator The present invention relates to a novel convection radiator. A convection radiator comprising a system of air circulation by natural convection and a system of air circulation by forced convection including an air convection means, such as a turbine, each of ... | 05/17/1983 |
| 4362922 | Air make-up unit Disclosed is an air make-up unit mounted within the confines of a conventional outside wall of a frame building between the 16" on-center studs. The unit includes a rotary blower with a horizontal tangential discharge, the latter having heating elements t... | 12/07/1982 |
| 4110600 | Thermostatically controlled plural heat output portable electric space heater A portable electric space heater has a case that surrounds separate electric heating elements, and the case has separated upper and lower airflow openings. A control switch allows manual selection of two different operating cycles, respectively suited for... | 08/29/1978 |
| 4088870 | Portable electrical space heater A portable, electrical space heater adapted to be placed and turned on in any enclosure where a suitable source of electrical energy is available. The heater is characterized by an open framework in which an electric fan is contained, and a surmounting, p... | 05/09/1978 |
| 4031573 | Portable sauna A portable hot air and steam bath includes a substantially rigid box-like structure having a deep section for extending vertically for defining the back of the apparatus and a hinged front section for hinging downward to define a floor of the apparatus wi... | 06/28/1977 |
