Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7288749 | Electrical heating device and method of its manufacture An electric heating device based on a ribbon of crystalline metal foil with high specific resistance, which is additionally treated to increase its plasticity and/or additionally coated with a mold release agent to enhance compatibility of the ribbon and insulating ... | 10/30/2007 |
| 7233647 | Radiation window and method of manufacture A radiation window device to transmit radiation as part of an x-ray source or detector includes a support to be subject to a substantial vacuum, and an opening configured to transmit radiation. A film is mounted directly on the support across the opening, and has a ... | 06/19/2007 |
| 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 |
| 7035379 | Radiation window and method of manufacture A radiation window device to transmit radiation as part of an x-ray source or detector includes a support to be subject to a substantial vacuum, and an opening configured to transmit radiation. A film is mounted directly on the support across the opening, and has a ... | 04/25/2006 |
| 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 |
| 5877674 | Resistor with elongated resistor element panels A resistor comprising a substantially continuous resistor element being formed into a plurality of element panels with each panel having at least two holes provided therein. Adjacent element panels are connected in series by a bend in the resistor element... | 03/02/1999 |
| 5396214 | Dynamic braking grid resistor configuration for reducing EMI in an electric traction motor vehicle A dynamic braking grid arrangement for reducing EMI generated by dynamic or partial regenerative electrical braking of an electric traction motor powered vehicle coupled to a wayside power source by a third rail or catenary. The grid arrangement comprises... | 03/07/1995 |
| 5304978 | Resistor grid assembly having "U" bend resistor elements A heat dissipating fabricated resistor grid for the dynamic braking of electric motors has a zigzag resistor supported by insulating members within a frame. The zigzag resistor is made up of a plurality of resistor elements formed from sheet metal, each e... | 04/19/1994 |
| 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 |
| 5245310 | Resistor grid insulator mountings An improved frame supported resistor grid used for dynamic braking of electric motors is provided. The resistor grid has a metal frame and fan-folded strips of resistance material arranged in columns within the frame. The strips of resistance material are... | 09/14/1993 |
| 5221917 | Resistor ribbon for resistor grids A fan-folded resistor ribbon is provided for use in resistor grids that are used for dynamic braking of diesel electric locomotives. The resistor ribbon is formed, from a continuous strip of resistance material, into flat portions that are connected by se... | 06/22/1993 |
| 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 |
| 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 |
| 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 |
| 5049852 | Resistor grid heat dissipating assembly A heat dissipating resistor grid has a 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 of resistance material... | 09/17/1991 |
| 5049851 | Embossed and lanced resistor structure A resistor grid for dynamic braking and the like has a fan-folded strip of resistance material mounted in a frame. The strip is embossed longitudinally so as to stiffen it between folds or loops and lanced or slit longitudinally between embossments from f... | 09/17/1991 |
| 5045831 | Vertical flight resistor grid A resistor grid suitable for dynamic braking of diesel electric locomotives includes an upright rectangular frame with top and bottom members of insulating material and a strip of resistance material fan-folded into vertical flights between the top and bo... | 09/03/1991 |
| 4894515 | Hot plate for cooking A hot plate formed by a hub from which spokes radially extend in a horizontal plane, the spokes being formed by flat strips of refractory fibrous or woven material, each positioned in a vertical plane and having upper edges in which downwardly extending n... | 01/16/1990 |
| 4837549 | Tapped resistor grid assembly In the assembly two or more strips of resistance material are positioned edge-to-edge and fan-folded between the side members of a frame. The strips are supported at their loops by insulated fixtures and each has a terminal at each end. The strips are emb... | 06/06/1989 |
| 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 |
| 4651124 | Frame supported grid resistor A rigid frame supported resistor for dynamic braking of electric and diesel-electric locomotives has certain of the frame elements cushioned or insulated from each other and the resistance ribbon insulated and cushioned from the frame. Organic insulating ... | 03/17/1987 |
| 4651119 | Electric fuse heat dam element having stiffening ribs An electric fuse is provided with heat dam elements interconnecting the fusible element and the fuse end terminals, which are provided with one or more raised ribs integrally formed therein. The heat dams include a plurality of planar sections and interco... | 03/17/1987 |
| 4581522 | Electrical heating system including a mesh heating element An electrical heating system for use in heating surfaces. A heating element is constructed of mesh screen comprised of small gauge wires which are spaced in a close mesh arrangement such that the total surface area of the wires is substantially equal to o... | 04/08/1986 |
| 4463338 | Electrical network and method for producing the same An electrical network containing at least one electric resistor, includes a support foil and at least one resistance layer coating the support foil forming the at least one electric resistor. The support foil and resistance layer are folded along a zig-za... | 07/31/1984 |
| 4439666 | Electrical heating system An electrical heating system for use in heating surfaces. A heating element is constructed of mesh screen comprised of nonferrous, small gauge metal wires which are spaced in a cloth mesh arrangement such that the total surface area of the wires is substa... | 03/27/1984 |
| 4433233 | Silicon carbide heating elements An electrical resistance heater or igniter characterized by having a core bonded by regrowth of silicon carbide is produced by heating particulate silicon carbide which may be mixed with a minor amount of modifying agent, by means of an uncharged beam of ... | 02/21/1984 |
| 4328529 | Silicon carbide igniters An electrical exceptance heater or igniter characterized by having a core bonded by regrowth of silicon carbide is produced by heating particulate silicon carbide which may be mixed with a minor amount of modifying agent, by means of an uncharged beam of ... | 05/04/1982 |
| 4007435 | Sensor device and method of manufacturing same An oxygen sensing device particularly suited as a sensor for the exhaust gases of internal combustion engines, the sensing device comprising an electrically insulative ceramic element having bonded on the surface thereof a layer of an oxygen sensing metal... | 02/08/1977 |
