Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7312426 | Cooking apparatus A cooking apparatus includes a heater mounting unit that mounts a heater on a reflecting plate in a simple manner and allows an internal construction of the cooking apparatus to be simple. The cooking apparatus also includes a cabinet, at least one heater mounted in... | 12/25/2007 |
| 7291809 | Soldering iron and method of manufacturing same A soldering iron provided with a soldering tip that melts solder at a distal end, having inside said soldering tip a substantially cylindrical insertion fit recess portion extending from a proximal end of the soldering tip to the distal end, opening at the proximal ... | 11/06/2007 |
| 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 |
| 6075230 | Ceramic heating element A heating element comprises a ceramic body having a helical heating wire embedded therein. A short quartz tube closely surrounds the hearing wirs along part of its length, and a thermocouple has its junction embedded in the body substantially in direct co... | 06/13/2000 |
| 5671323 | Zigzag heating device with downward directed connecting portions A heating device has a plurality of strip heating portions separated by a plurality of slits. The strip heating portions are connected to one another by connecting portions, thereby forming a heating surface in which a zigzag current path extends. The con... | 09/23/1997 |
| 5643483 | Ceramic heater made of fused silica glass having roughened surface An improvement is proposed in a ceramic heater which is an integral body comprising a flat substrate plate made from an electrically insulating ceramic material, e.g., fused silica glass, and a layer of an electroconductive material formed on one surface ... | 07/01/1997 |
| 5616266 | Resistance heating element with large area, thin film and method A large-area, thin film, resistance heating element (21, 46, 81) including a relatively rigid substrate (22, 63, 82), which will retain its mechanical properties at elevated temperatures, an electrically conductive film (26, 64, 84) deposited on the subst... | 04/01/1997 |
| 5335310 | Modular heating assembly with heating element support tubes disposed between hangers A modular type heating unit or assembly having particular utility for use in a high temperature electric furnace, preferably in a group arrangement, comprises an insulating fibrous refractory block, a pair of spaced apart support rods, inner and outer sup... | 08/02/1994 |
| 5278939 | Vacuum-molded ceramic fiber electric radiant heating unit with resistance heating coils internally free of fibers A vacuum-molded electrical radiant heating unit having a resistance heating coil embedded in a ceramic fiber body is prepared by a process in which a resistance heating coil (5) is placed on a sieve-like tray (1), above a suction box, and a slip is applie... | 01/11/1994 |
| 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 |
| 4798939 | Pressurized liquid cooker with integrated radiant heating apparatus A pressurized batch cooking pot has an encircling radiant heater which has a high temperature insulation shell with end abutting the pot and a center portion spaced from the pot. A spiral coil is firmly embedded within the inner wall of the insulation she... | 01/17/1989 |
| 4450343 | High output, long duration, quick response, radiant electrical heater This invention provides a radiant heating apparatus utilizing a continuous wire and formed into accordion shaped strips. Three strips are shown and the ends of the strips have connecting end portions that are disposed in slots. The strips are carried in l... | 05/22/1984 |
| 4447710 | Electric cookers incorporating radiant heaters A glass ceramic top cooker has at least one radiant heater arranged beneath the glass ceramic surface, the or each radiant heater comprising a continuous base layer of electrical and thermal insulating material, a peripheral wall also of electrical and th... | 05/08/1984 |
| 4357523 | Electrical heating means for cookers or hot plates An electrical heating device for cookers and hot plates is disclosed, having a heat-resistant support member disposed below a heat-radiation transmitting plate, in particular, a glass-ceramic plate. The support member is adapted to receive at least one el... | 11/02/1982 |
| 4327280 | Smooth top cookers A radiant heater for use in "smooth top" cookers of the type in which a smooth top normally of glass ceramic overlays one or more generally circular electric heater elements supported on a layer of thermal and electrical insulating material such that the ... | 04/27/1982 |
| 4264805 | Wireform heating element support for ceramic top Apparatus for supporting electric range heating elements below a smooth cooking surface, including a lightweight wire frame formed with at least a pair of resilient wire members for capturing and resiliently maintaining a heating element between the wire ... | 04/28/1981 |
| 4253012 | Electrical heating units Described herein is an electrical heating unit for smooth top cookers. The unit comprises a heating element in the form of a spiral coil of bare wire which has then been helically rolled together with a strip of flexible thermal and electrical insulation ... | 02/24/1981 |
| 4243874 | Radiant heating unit A radiant heating unit is provided with heating resistances which are arranged on an insulating support which is substantially plate-shaped in the heating region. The insulating support has elevations formed thereon into which the heating resistances are ... | 01/06/1981 |
| 4100395 | Expanded element radiant heating device A heating device having a sinuous, expanded metal heating element of high intensity and quick response mounted upon chemically inert non-woven alumina-silica filler refractory material. The heating element is fabricated of metal sheeting by slitting and e... | 07/11/1978 |
