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| Number | Title | Issue Date |
| 7355504 | Electrical devices An electrical device which comprises first and second laminar electrodes and a laminar PTC resistive element sandwiched between them, the device comprising (a) a main portion which comprises a main part of the first electrode, a ma... | 04/08/2008 |
| 6701495 | Model of the contact region of integrated circuit resistors Accurate models of the contact region of an integrated circuit resistor are created in a single function. The function incorporates many contact geometries into a single function that cannot otherwise be represented by a closed form solution. A method of ... | 03/02/2004 |
| 5841341 | Clip for PTC devices A dielectric clip for holding a PTC device is dimensioned and shaped to occupy a three-dimensional space envelope that provides a close fit in a fuse socket.... | 11/24/1998 |
| 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 |
| 5187771 | Heat processing apparatus utilizing a plurality of stacked heater holders A heat processing apparatus comprises a reactor tube in which matters to be processed are housed, a wire-shaped heating unit enclosing the reactor tube, a support device for supporting the heating unit at plural positions, and reinforcing members for rein... | 02/16/1993 |
| 5159310 | Resistor grid heat dissipating assembly A heat dissipating resistor grid has a rectangular or annular frame including side members carrying blocks or panels of insulating material having cavities in their inner surfaces. The resistor element is a zigzag strip formed from individual flat lengths... | 10/27/1992 |
| 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 |
| 4769094 | Amorphous-nickel-base alloy electrical resistors Amorphous Nickel-base alloys for electrical resistors, which contain, by atomic %, 81-x% Ni, x% Cr, 6% B and 13% Si (z=0~25), or 70% Ni, 11% Cr, 19-y% B and y% Si (y=0~19 except 13), or 100-z% of 0.864 Ni and 0.136 Cr and z% of 0.316 B and 0.684 Si (x=15~... | 09/06/1988 |
| 4636617 | Heating coil assembly for a heavy duty hot air blower A heating coil assembly for use in an air blower device has an annular support element, a first end cap, a core having a heating coil spirally wound thereon, a sleeve surrounding the coil and core, and a second end cap. All components have a centrally dis... | 01/13/1987 |
| 4326121 | Electric immersion heater for heating corrosive liquids An electric immersion heater of planar construction for use in industrial processes is constructed of a non-corrodable material and may be immersed at the side of a processing not containing corrosive liquids. The heater includes a thin planar polymeric s... | 04/20/1982 |
| 4238756 | Electric resistance unit An electric resistance unit characterized by a support rod with a plurality of insulating refractory bodies thereon, which bodies have grooves to fit the rod, a continuous resistance winding mounted around the bodies, and flexible metal mounting means in ... | 12/09/1980 |
| 4230933 | Electric air heating element An electric air heating element is designed for positioning in the cylindrical or conical outlet tube of a hair dryer. It consists of a star-shaped coil carrier in the shape of four fins extending radially from a common center line in the axis of the outl... | 10/28/1980 |
| 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 |
| 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 |
| 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 |
