Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7230215 | Heat generating device formed of heat generating diaphragm plates Disclosed herein is a heat generating device formed of heat generating diaphragm plates comprises an electrically conducting supporting frame and a plurality of heat generating diaphragm plates. The supporting frame consists of two coupled supporting plates facing a... | 06/12/2007 |
| 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 |
| 7102484 | High power resistor having an improved operating temperature range A high power resistor includes a resistance element with first and second leads extending out from the opposite ends thereof. A heat sink of dielectric material is in heat conducting relation to the resistance element. The heat conducting relationship of the resista... | 09/05/2006 |
| 6924726 | Liquid-cooled high-power resistor A high-power resistor comprises a plurality of resistor elements (1), made of sheets of an electrically conductive resistance material, with a first (13) and a second (14) terminal. The resistor elements are mutually separated by disc-shaped ins... | 08/02/2005 |
| 6917278 | Resistor banks A Resistor bank has first and second supporting member. Held on to the supporting members is a resistor element comprising a strip of resistor material which is bent into a zigzag shape. The strip is continuous and has a non-planar cross section profile. A plurality... | 07/12/2005 |
| 6747543 | Resistor for driving motor for air conditioner blower A resistor for driving a motor for an air conditioner blower is provided, in which internal resistance bodies are stacked over one after another between insulation plates in the resistor, to accordingly reduce the volume of the entire of the resistor is reduced, and... | 06/08/2004 |
| 6430045 | Cooling resistor banks Resistor bank cooling apparatus 1 has an enclosure 2 surrounding a resistor bank 4. At least one first vane 6 directs into the enclosure 2 air flowing past an open side 12 thereof, which open side 12 is not a side facing the direction from which the air f... | 08/06/2002 |
| 6166619 | Overcurrent limiter having inductive compensation Current limiters, preferably PTC resistors, are used for limiting short-circuit current when connected in series to capacitors and converter valves. Protective devices operating with these PTC resistors are able to work reversibly and respond without arci... | 12/26/2000 |
| 6081183 | Resistor adapted for use in forced ventilation dynamic braking applications A continuous ribbon resistor element having a plurality of conjunctive lengths alternately connected by reflexes is supported in a frame comprised of silicon bonded laminated mica. The ribbon elements are formed with a single, flat convolution center offs... | 06/27/2000 |
| 5619612 | Electric air heater with cage-shaped heating element comprised of resistance alloy strips and inclined guide vanes A motor is located in the air inlet area is enclosed in a shock proof housing. The housing is of a cylindrical configuration, comprising a solid rear wall and a front wall which contains air inlet openings small enough to prevent access to the live electr... | 04/08/1997 |
| 5488334 | Air-cooled power load The power loads in certain applications such as dummy antennas must have a substantially constant impedance in a wide band of frequencies. The power load is air-cooled and its resistive element is constituted by the series-connection of resistor modules m... | 01/30/1996 |
| 5334818 | Modular high density electric heating element arrangement for an air flow heater A heating element for an air flow comprises a channel shaped bracket including a base and side walls at right angles thereto within which is mounted a pair of mica sheets arranged parallel to the base and at right angles to the sides and connected to the ... | 08/02/1994 |
| 5281944 | Slide-in resistor grid A resistor grid for dynamic braking of diesel electric locomotives has a rigid frame that includes outer metal side pieces and metal dividers within the frame between which are positioned columns of fan-folded resistor ribbon. The dividers carry support p... | 01/25/1994 |
| 5157373 | Post glover resistor A high power resistor grid assembly formed of a plurality of stainless steel resistor U-shaped elements arranged in a substantially parallel relationship welded together in a continuous path. Each element comprising a slotted rectangular sheet in a U-shap... | 10/20/1992 |
| 5134270 | Heater assembly for use in clothes dryers A heater assembly (10) is for installation in a clothes dryer (D). The assembly includes at least one open coil heating element (12), and a plurality of insulators (16) to each of which a convolution of the coil is attachable. The insulators are mounted o... | 07/28/1992 |
| 5068637 | Plate-like metal element for electrical resistor grid assembly For use in a welded resistor grid assembly moving a plurality of generally parallel, relatively think plate-like metal elements disposed between a pair of spaced-apart insulating support members having a plurality of slotted openings in their opposing sid... | 11/26/1991 |
| 5034721 | Heating element conveniently formed from flat blank The invention relates to a method of manufacturing a heating element from a flat metal foil blank in which strips (1) are formed whose ends (2) are interconnected by connecting portions (3, 4) with alternate connecting portions disposed at opposite ends o... | 07/23/1991 |
| 4935687 | Electrical heat exchange device An electrical heat exchange device comprising a plurality of electrically conductive metal plates secured side by side in spaced apart relationship by electrically insulating spacer means. Each of the plates has a plurality of conductive path sections for... | 06/19/1990 |
| 4847585 | Center ventilated resistor grid A resistor grid for diesel electric locomotives and the like has a rigid frame comprising outer metal side pieces and one or more pairs of inner metal side pieces spaced from each other, and columns of resistor ribbon fan-folded between each outer and out... | 07/11/1989 |
| 4794227 | Electrical resistance heater element for room air heater A resistance heater element for an electric room heater includes a resistive heating conductor (1) supported by an insulating support (2) mounted on the support flange (9) of an electric fan (4) in the heater which passes a stream of room air across the c... | 12/27/1988 |
| 4767914 | Electric hairdryer having a cage-shaped heater element A hair dryer with a frusto-conical casing tapering from a larger rear air inlet end to a smaller air outlet end contains in coaxial alignment therewith in an electric heater element shaped as a cylindrical open-ended cage and an electric motor extending p... | 08/30/1988 |
| 4734824 | Electrical insulating oil and electrical appliances impregnated with the same An electrical insulating oil which is suitable for use in impregnating electrical appliances such as capacitors, cables and transformers, especially those in which plastic materials are used partially or totally as dielectrics or insulating materials, and... | 03/29/1988 |
| 4651125 | Resistor grid assembly with rib turbulence generators A grid assembly for converting electrical energy to heat and then dissipating same. A plurality of parallel grid members include outwardly extending legs received in holes provided on mutually facing surfaces on polyester glass insulator members. The grid... | 03/17/1987 |
| 4630024 | Grid resistor and improved grid element therefor A grid resistor assembly includes a plurality of flat grid resistor elements. Each element includes at least one open-ended loop having side portions and a tip end portion connected together through intervening strip portions of narrower width than the si... | 12/16/1986 |
| 4398082 | Heating apparatus An improved heating apparatus for heating a small room or confined space has an electric heater element affixed to a mounting frame assembly by means of notched heater element supports. The notched heater element supports are operably disposed within slot... | 08/09/1983 |
| 4191880 | Heating element for electrical appliance having a blower A heating element for electrical appliances which include a meander-form winding of resistance heating wire, two or more supporting plates arranged parallel to an incident flow direction of air produced by the blower and having openings in which turns of ... | 03/04/1980 |
| 4151398 | Clothes dryer heating unit A forced convection electrical heater assembly advantgeously utilizing expanded resistance alloy foil or grid in a pattern which produces a uniform temperature distribution in the existing airstream and which produces relatively little flow restriction on... | 04/24/1979 |
| 4146868 | Resistance unit structure The unit comprises a fan-folded ribbon of resistance material supported by parallel insulating members at the ends of the loops. Each length or fold is formed with a transverse reverse bend or offset dividing the fold into major and minor lengths, which a... | 03/27/1979 |
| 4122329 | Electrical air heating appliance An electric air heating appliance includes a housing defining an air flow path in which is positioned a resistance heater assembly which includes a plurality of air vanes for reducing air swirling. The heater assembly includes a semi-rigid assembly of mic... | 10/24/1978 |
| 4109138 | Fan-heater appliance with adjustable fan speed A fan-heater appliance, e.g., hair drier, has a tapping arrangement for providing a variable supply to a fan motor to regulate the speed thereof. The tapping arrangement comprises a current collector which is slidable over a row of heads of tubular rivets... | 08/22/1978 |
| 4090061 | Electric air-heater unit utilizing a centrifugal impeller An air heating unit comprises a blower casing, a centrifugal impeller and a heating element in the shape of a cylindrical cage of longitudinal guide vanes fastened to the wall of the casing. The guide vanes are made from an electric resistance alloy in sh... | 05/16/1978 |
| 4079233 | Heating element for electrical appliances having a blower A heating element for an electrical appliance having a blower (e.g. a fan heater or a hair drier) comprises a wire looped in linear formation (e.g. zig-zag or sinuous) the loops being held in position by support plates so that there are at least two loop ... | 03/14/1978 |
| 4075459 | Voltage tapping in electrical heating elements A heater element for an electrical appliance (especially one having a blower, such as a fan heater, hair drier or the like) consists of a resistance heating wire looped in linear formation (e.g. zig-zag) and held transversely of the air flow direction by ... | 02/21/1978 |
| 4066865 | Portable hair drying appliance and heating element assembly therefor A heater assembly for an electrical appliance such as a portable hair dryer. The heater assembly includes an elongated flexible foil resistance element having opposite longitudinal edge portions mounted on spaced disc support members. T-shaped tabs extend... | 01/03/1978 |
| 4039774 | Portable hair dryer A portable hair dryer comprising an elongated casing of circular transverse cross-section and including a handle portion at one end an air discharge nozzle portion at the opposite end and an enlarged diameter intermediate section housing operative element... | 08/02/1977 |
| 4025754 | Electrically heated dryer An electrically heated dryer for articles comprises a drying container and an air duct leading thereto for directing air in a stream through the duct and into the container. An electric resistance heating element is provided in the duct and comprises an e... | 05/24/1977 |
| 4001761 | Helical resistor and method for assembling A power resistor including a resistance element of metal ribbon formed into an edgewound helix, and an internal three-point support structure axially disposed within the interior of the helix. The support structure includes three insulating assemblies eac... | 01/04/1977 |
