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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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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 |
| 7186356 | Analytical device A sensor for chemical species or biological species or radiation presenting to test fluid a polymer composition comprises polymer and conductive filler metal, alloy or reduced metal oxide and having a first level of electrical conductance when quiescent and being co... | 03/06/2007 |
| 7159347 | Display sheet holder A one-piece sleeve structure for securing the end of sheet material which permits ease in opening and closing on the sheet material during insertion or removal therefrom. Included are end caps for positive retaining of the sheet once inserted. ... | 01/09/2007 |
| 7128298 | Component positioning device A component positioning device including a first support device, the first support device having a first upper structure and a first lower structure, the first upper structure including a first inner wall disposed at a first predetermined angle and defining a first ... | 10/31/2006 |
| 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 |
| 6723968 | Conductive U-shaped jumper strap and method of use A conductive metal jumper strap has a plate portion with a pair of connection legs forming a u-shape. The connection legs are adapted to connect to terminals to make an electrical connection between two components of a heating device. The plate portion has a bend in... | 04/20/2004 |
| 6160957 | Infrared radiation panel An infrared radiating panel includes a wall made from ceramic fiber material. An electric heating element is adapted for connection to an electric current source for heating the element to a high temperature at which it will emit infrared radiation is fas... | 12/12/2000 |
| 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 |
| 6020577 | Electric heating element support structures and method of making same A structure is provided for supporting at least one heating element inside an electric heater housing. To produce the support structure, a web is cut out of a metal sheet that includes a rectangular member, one or more support brackets and a neck portion ... | 02/01/2000 |
| 5835679 | Polymeric immersion heating element with skeletal support and optional heat transfer fins Electrical resistance heating elements, hot water heaters containing such elements, and methods of preparing such elements are provided. The electrical resistance heating elements of this invention can be disposed through a wall of a tank for heating flui... | 11/10/1998 |
| 5808279 | Heating panel for making ovens for thermoforming apparatus An improved construction panel, in particular for ovens to be used in heating stations of thermoforming apparatus, comprises two separated portions, that is: a front portion (2) provided with heating elements; and a rear portion (3) holding the related po... | 09/15/1998 |
| 5578232 | Open-coil heater assembly and insulator therefor An open coil electric heater comprising a rigid support frame composed of a pair of longitudinally extending, laterally spaced members, with cross members between and secured to the longitudinal members. The cross members carry ceramic insulator members w... | 11/26/1996 |
| 5315871 | Thermal flowmeter with detecting element supported by supports having engaging portions A thermal flowmeter for determining a parameter of a fluid flowing through a passage, including a detecting element, and a pair of electrically conductive supports fixed to a wall defining the passage for supporting the detecting element. The detecting el... | 05/31/1994 |
| 5224378 | Thermal flowmeter with detecting element supported by supports having engaging portions A thermal flowmeter for determining a parameter of a fluid flowing through a passage, including a detecting element, and a pair of electrically conductive supports fixed to a wall defining the passage for supporting the detecting element. The detecting el... | 07/06/1993 |
| 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 |
| 5159176 | Device for heating, by infrared radiation, fixed on a wall or the ceiling of a room of a building The present invention relates to a device for heating, by infrared radiation, fixed on a wall 3 or beneath the ceiling of a room of a building, comprising a flat infrared radiation emitter constituted by a sheet 5 made of an electrically conducting materi... | 10/27/1992 |
| 5153555 | Electronic device comprising a plate-shaped electronic element and a support and overcurrent protector for the same There is disclosed an electronic device comprising a plate-shaped electronic element having electrode films. The electronic element is elastically supported by spring members in an electrically insulating case so as to be respectively in contact with the ... | 10/06/1992 |
| 5124534 | Heating coil support and insulation mechanism The improved heating coil support and insulation mechanism of the present invention is intended for use in regard to electrical heating assemblies which include heating coils supported and electrically insulated by means of coil support insulators, and ea... | 06/23/1992 |
| 5122640 | Heating element coil support An insulating support for a helical wire heating coil for an electric resistance heating element includes a coil supporting notch into which a single helical coil turn is inserted and locked into position without twisting the coil and without unduly stret... | 06/16/1992 |
| 5117089 | Structural support for hermetic terminal assembly heater apparatus A heating apparatus for heating a fluid medium confined in a hermetically sealed housing chamber including a terminal assembly having a body member sealed in the housing chamber wall with pins extending in sealed relation therethrough to provide electrica... | 05/26/1992 |
| 5029231 | Radiant heat panel A radiant heating panel is formed using a foam insulation core surrounded by a reinforcing mesh and having a pair of wiring harness fixtures snapped over each end of the reinforced core. A radiant heating wire is strung back and fourth between the fixture... | 07/02/1991 |
| 4909078 | Fluid flow detector A thermal effect sensing device comprises a semiconductor substrate supporting an insulating layer which has a thin film of platinum deposited on it. Holes are etched through the semiconductor substrate and the insulating layer. The platinum film is shape... | 03/20/1990 |
| 4775775 | Programmable electrical heater A programmable heater which can be electronically programmed to provide an intended heat profile and intended heater power for application of heat only to an intended area. The heater is especially adapted for use in electronic circuit board repair system... | 10/04/1988 |
| 4754124 | Resistance heaters A resistance heater for performing heat treatment of the braze-affected area of a metallic sleeve attached by brazing within and to a metallic tube, comprises a metal tube (10) of which a portion (16) is formed with a spiral groove (11) which penetrates t... | 06/28/1988 |
| 4716275 | Evaporator coil heat exchanger assembly An evaporator coil heat exchanger assembly of a refrigeration system, such as a transport refrigeration system, which includes an electrical heating element for rapid defrosting of the evaporator coil with its attendant refrigerant carrying tubes and cool... | 12/29/1987 |
| 4682503 | Microscopic size, thermal conductivity type, air or gas absolute pressure sensor A microscopic size absolute pressure sensor for air or gas of the thermal conductivity type, a silicon nitride covered silicon microchip has an elongated V-groove anisotropically etched in the silicon with a heated silicon nitride bridge element extending... | 07/28/1987 |
| 4654627 | Resistor grid assembly 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... | 03/31/1987 |
| 4616504 | Throttle position sensor A throttle position sensor having a potentiometer module which fits into a connector casing for mounting on a carburetor or and air-fuel mixture control system for an internal combustion engine. The position sensor assembly is mounted such that movement o... | 10/14/1986 |
| 4617547 | Heater assembly A heater assembly includes a housing which both channels air flowing around a heating element and provides support structure for the elements holding the heating element. In one embodiment, a lower U-shaped channel has recesses in opposed sidewalls to eng... | 10/14/1986 |
| 4581928 | Slotted diaphragm semiconductor device A semiconductor body comprises (100) silicon having a (100) plane and a [110] direction. A depression is formed in a first surface of the semiconductor body which is substantially parallel to the (100) plane. A slotted diaphragm is located over the depres... | 04/15/1986 |
| 4573164 | Support for electrical resistances of ovens or kilns with ceramic mantle thermal insulation Utility model patent for a support for electrical resistances of ovens or kilns with ceramic mantle thermal insulation, used to support resistances of the kind consisting of a filament or ribbon of electrical conductor material laid in a sinuous or fretwo... | 02/25/1986 |
| 4554829 | Device for measuring the mass of a flowing medium A device for measuring the mass of a flowing medium. The apparatus includes a carrier, to which at least one temperature-dependent resistor layer is applied; on opposing sides this layer is partially overlapped by electrical conductive connecting layers h... | 11/26/1985 |
| 4553126 | Resistance heating element Resistance heating element, with a heat conductor led in meander pattern, which is fastened in the zone of the meander arches in bearing elements, characterized in that between the bearing elements there is arranged a heating conductor of at least one one... | 11/12/1985 |
| 4549433 | Device for measuring the mass of a flowing medium A device for measuring the mass of a flowing medium. The device includes a flat carrier to which at least one resistor layer is applied. Electrical conductor connections extending in alignment with one another are fixed on one end, with ends in elastic ho... | 10/29/1985 |
| 4478077 | Flow sensor A flow sensor comprising a pair of thin film heat sensors and a thin film heater is disclosed. The flow sensor further comprises a semiconductor body with a depression therein and structure connecting the heater and the sensors to the body and bridging th... | 10/23/1984 |
| 4322605 | Heating device for skin packaging machine A heating device (20) is provided that may be utilized in either a film packaging machine or a thermoforming machine. Heating device (20) includes a frame (32) that carries a plurality of eyelets (36) that are utilized to suspend an elongated ribbon heati... | 03/30/1982 |
| 4320283 | Blow dryer with heater inside stand A blow dryer has a housing elongated along an axis and formed with a relatively large head and a slender handle. A two-part centrifugal fan having a hollow interior is mounted in the head and is driven by a motor mounted in the handle. A heater is provide... | 03/16/1982 |
| 4316172 | Resistor such as for dynamic braking of electric motors A dynamic braking resistor as shown and claimed in U.S. Pat. No. 2,680,178 in which the insulator blocks (226) in this new disclosure are formed of a hot-molded organic compound instead of steatite or asbestos. This allows the insulator blocks to be secur... | 02/16/1982 |
| 4313049 | Electrical heating element for fluid media A heating element (for a hair dryer, fan heater or other electrical appliance) in which the turns of resistance heating wire are held in place, in edge recesses of support plate means, by a strip of heat-resistant cement applied to the supporting edges an... | 01/26/1982 |
| 4243872 | Electrical heating element An improved electrical heating element is constructed in such a manner as to increase the amount of electrical wire per unit space available for plug-type convection heating units. The plug uses a rectangular-shaped frame which has a plurality of spool co... | 01/06/1981 |
