Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7535335 | Anti-condensate resistance with PTC thermistor and process for assembling such resistance An anti-condensate resistance (1) with PTC thermistor 5 is disclosed, comprising a central heat sink element (3), such central heat sink element (3) being composed of two dissipating plates (3a, 3b) which are m... | 05/19/2009 |
| 7439473 | Method and arrangement for supporting vertically depending electrical resistance elements A method of supporting vertically hanging electrical resistance elements for heating furnaces or ovens in industrial operations. Each resistance element includes current-conducting legs that extend downward and upward a number of times, and the element includes alon... | 10/21/2008 |
| 7097876 | Method for forming protective film of strippable paint on sprayed coating of automobile or other large-sized product There are disclosed a method and a apparatus for applying a strippable paint to a large-sized product finished with a sprayed coating, such as an automobile, to form a protective film on the surface of the coating. The product is conventionally kept in stock for a p... | 08/29/2006 |
| 7075775 | Chip-type electronic component In a chip-type electronic component of the present invention, at least one surface of a ceramic body is a convexly curved surface. Specifically, at least one surface in a thickness direction of the ceramic body may be convexly curved, and the side surface of the cer... | 07/11/2006 |
| 6169472 | Thermistor system A PCT thermistor arrangement for use in a circuit for demagnetizing shadowmasks of color picture tubes, has at least two PTC thermistor elements which are designed as switching PTC thermistors, are or can be thermally coupled and are or can be electricall... | 01/02/2001 |
| 5891751 | Hermetically sealed transducers and methods for producing the same A reduced size, hermetically sealed semiconductor transducer and methods for fabricating the same. In a preferred embodiment, the transducer comprises a transducer wafer including a diaphragm which deflects upon the application of a force thereto. At leas... | 04/06/1999 |
| 5867630 | Infrared radiator and its manufacturing process An infrared radiator has a twin tube with an inner bridge that separates two housings which run along the longitudinal direction of the tube. A first heating spiral arranged in a first one of the housings is provided with an external electrical current su... | 02/02/1999 |
| 5714924 | Positive characteristic thermistor device The internal space of the case is divided into first housing portions and a second housing portion separated from the first housing portions by a partitioning wall. A positive characteristic thermistor element is housed in the second housing portion. At l... | 02/03/1998 |
| 5178468 | Temperature measuring probe and electronic clinical thermometer equipped with same Provided are a temperature measuring probe separable from a main body which includes a signal processor, and an electronic clinical thermometer equipped with this probe. The temperature measuring probe includes a temperature measuring circuit supported by... | 01/12/1993 |
| 5155798 | Quick-response quartz tube infra-red heater An infra-red heater for a hybrid oven drying a web with an elongate foil having transverse corrugations heating element within a quartz tube. A thermocouple sensor is used to provide a control signal to a controller to regulate the infra-red output.... | 10/13/1992 |
| 5149200 | Temperature measuring probe and electronic clinical thermometer equipped with same A temperature measuring probe includes a temperature measuring circuit having a temperature sensing body supported by a flat, flexible strip-shaped base member, in which the temperature measuring circuit is sealed by a coating member, such as a film, and/... | 09/22/1992 |
| 5091632 | Infrared radiator A short-wave infrared radiator includes a longitudinally extended twin tube having two partial chambers running in longitudinal direction. The radiator can optionally be heated over its entire length or a partial length. The radiator is divided into two r... | 02/25/1992 |
| 5088837 | Temperature measuring probe and electronic clinical thermometer equipped with same Provided are a temperature measuring probe separable from a main body which includes a signal processor, and an electronic clinical thermometer equipped with this probe. The temperature measuring probe includes a temperature measuring circuit supported by... | 02/18/1992 |
| 5077536 | Device for protecting electric power resistances and anti-overpressure system A device for the protection of electric power resistances assembled in a battery using rods, insulating guns and isolators all housed within a dust tight and water jet tight parallelepipedic metallic housing, containing only air for cooling the resistance... | 12/31/1991 |
| 5065131 | Electric immersion heater An immersion heater for a fluidized bed decarbonation reactor includes an elongate cylindrical graphite heating element within a sealed chamber into which an inert gas, such as argon, is introduced for protecting the heating element from oxidation and fro... | 11/12/1991 |
| 5039975 | Resistor substrate A resistor substrate for a variable resistor of the enclosed type which may be employed in a throttle sensor of an automobile. The resistor substrate has a disk portion and a rectangular apron provided at a circumferential portion of the disk portion. The... | 08/13/1991 |
| 5003284 | Infrared radiator An infrared radiator includes a non-circular jacket tube made of quartz material, which may be quartz glass, the length of which is a multiple of the larger interior diameter and the interior of whch, in a sectional view, is separated into two areas, in e... | 03/26/1991 |
| 4862137 | Electric heating device having a metal sheath A resistance heating device having a longitudinal axis and a substantially cylindrical graphite heating element with a connecting part for connection to an electric power source. The device has a sheath surrounding the graphite heating element, radially s... | 08/29/1989 |
| 4551616 | Heating apparatus Heating apparatus includes a tray having a layer of insulative material disposed in the base thereof and a number of infra-red lamps disposed thereabove. The apparatus is accommodated within a housing having a layer of glass ceramic to form a hotplate. Ea... | 11/05/1985 |
| 4521674 | Electric fluid heater employing pressurized helium as a heat transfer medium An electric fluid heating apparatus includes a closed hollow metallic vessel filled with substantially pure gaseous helium at a pressure from about 30 psl absolute to about 100 psl absolute. At least one electric resistance heating element is disposed in ... | 06/04/1985 |
| 4426570 | Infrared radiative body and a method for making the same An infrared radiative body which is composed of a transparent refractory body and a refractory film thereon which absorbs visible and near-infrared radiation suitable for application in an infrared radiating apparatus such as a stove or oven, and a method... | 01/17/1984 |
| 4395619 | Hand held hair dryer with shock mounted quartz tube heater A hair dryer having a quartz glass tube heater to produce radiant heat has a shock mount sub-assembly to resist breakage of the tube when the hairdryer is subjected to drop tests or other selected concussions. The shock mounts include spring members which... | 07/26/1983 |
| 4382174 | Infra-red hair dryer There is disclosed a hand held pan shaped, infrared hair dryer containing a perforated air diffuser which can function as an infrared reflector if the air diffuser is shiny. The air diffuser also protects a quartz tube infrared emitter. A fan rotated by a... | 05/03/1983 |
| 4323761 | Radiant heat hair dryer A radiant heat hair dryer is provided, using a disc-shaped casing in which is mounted a ring-like, infra-red radiator, together with reflector means for directing the infra-red radiation through a grille-like member, that is shaped and constructed to supp... | 04/06/1982 |
| 4222024 | Thermistor assembly The thermistor assembly comprises a thermistor disc disposed within a closed ceramic container which has a support arm fastened thereto.... | 09/09/1980 |
| 4179603 | Radial blade heating device An electric radial blade type heating element is provided for industrial furnaces or other heated devices in which the electrical conductors are relatively thin flat strips or blades, rectangular in cross section and free floating relative to the insulati... | 12/18/1979 |
| 4176336 | Lacquer-encapsulated carbon film resistor A lacquer-encapsulated carbon film resistor having a ceramic substrate coated with a carbon film, a silicon nitride layer, an organic lacquer layer and termination electrodes.... | 11/27/1979 |
| 4163204 | Pressure-sensitive resistors The pressure-sensitive resistor comprising an electroconductive elastomer, in which an electroconductive particulate material is dispersed, two electrodes placed on the opposing surfaces of the elastomer, a means for providing a compressive force between ... | 07/31/1979 |
| 4124794 | Electrical heater unit An improved electrical heater using a vacuum surrounding the heating element instead of the usual gaseous or liquid medium for transfer of the heat to external means of dissipation. The heating element, enclosed and sealed in a surrounding encasement whic... | 11/07/1978 |
| 4119832 | Hermetically sealed electrical gas fuel igniter An electric heating element for igniting gas fuel comprises a hermetically sealed envelope made of at least 99% pure alumina and filled with a non-oxidizing gas such as hydrogen or one of the inert gases. A self-supporting coiled coil of tungsten or other... | 10/10/1978 |
| 4103277 | Ceramic enveloped electrical heating element An electrical heating element for ovens, furnaces and other infrared light applications comprises an elongate tubular envelope of thermally translucent refractory material such as pure alumina enclosing an elongate coiled refractory metal conductor which ... | 07/25/1978 |
| 4041438 | Electric heating device This electric heating device comprises a support surrounded by a resistance wire and located within a vacuum outer tube, said resistance being spaced from the inner surface of the outer tube. In order properly to position the support and resistance wire o... | 08/09/1977 |
| 4039886 | Contact pin insulation of infrared bright radiators Contact pins are mechanically fixed to hollow cylindrical insulation sleeves surrounding the contact pins at both ends of an infrared bright radiator by way of a circumferential recess within the inner wall of the hollow cylindrical sleeve or the opposed ... | 08/02/1977 |
| 4010440 | Electrical resistor component assembly which is hermetically sealed The present hermetically-sealed electrical resistor component assembly is composed of a sleeve of high-density, non-porous, non-hydroscopic material into which there is slip-fitted an electrical resistor component. Said electrical resistor component is se... | 03/01/1977 |
| 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 |
