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 |
| 7940156 | Power resistor module A power resistor module for electrical circuits has at least one resistor element and at least one housing element. The at least one resistor element is mounted at least section-wise between two electrically insulating, thermally conductive insulation elements in th... | 05/10/2011 |
| 7339455 | Platinum resistor temperature sensor A platinum temperature sensor incorporating an evaporation-suppressing layer containing platinum in the vicinity of the platinum thin-film resistor of the sensor. The evaporation-suppressing layer is preferably positioned between the platinum resistor and a porous l... | 03/04/2008 |
| 7190250 | Encapsulation with oxide bond to borosilicate mixture Environmental sensors and other bodies, together with associated lead wires, are mounted to a oxidizable substrate for high temperature applications by means of a reacted borosilicate mixture (RBM) that secures the body relative to the substrate via of an oxide inte... | 03/13/2007 |
| 7145430 | Electrical component and method for making the component An electrical component which has a base body that comprises a ceramic material and at least two contact regions arranged on the base body to which terminal elements are secured, is enveloped by a protective layer containing organic constituents, and has an intermed... | 12/05/2006 |
| 7026909 | Housing for temperature sensing assemblies in a thermometer A platinum resistance thermometer has an outer housing with a bore that receives a temperature sensor assembly including a mandrel having a sensing section with a platinum wire wound thereon and supported in the bore with a non-cohesive powder material that will dis... | 04/11/2006 |
| 6698922 | Temperature sensor A temperature sensor according to the present invention includes a sensor body for sensing a temperature; a sheath pin core wire electrically connected to the sensor body; a connector electrically connecting between the sheath pin core wire and the lead w... | 03/02/2004 |
| 6337470 | Electrical components molded within a polymer composite Various components of thermal systems are shown molded within a polymer composite sheath, including heaters, sensors, and control circuits. The use of transfer and compression molding allows for the use of thermoset polymers containing very high levels of... | 01/08/2002 |
| 6300607 | Molded polymer composite heater A molded polymer composite heater is shown. The use of transfer molding and compression molding allows for the use of thermoset polymers containing very high levels of reinforcement fillers. These improved materials, in turn create a heater with thermophy... | 10/09/2001 |
| 6147335 | Electrical components molded within a polymer composite Various components of thermal systems are shown molded within a polymer composite sheath, including heaters, sensors, and control circuits. The use of transfer and compression molding allows for the use of thermoset polymers containing very high levels of... | 11/14/2000 |
| 6124579 | Molded polymer composite heater A molded polymer composite heater is shown. The use of transfer molding and compression molding allows for the use of thermoset polymers containing very high levels of reinforcement fillers. These improved materials, in turn create a heater with thermophy... | 09/26/2000 |
| 5610572 | Resistor element having a plurality of glass layers A resistor element has a ceramic substrate and a metallic resistor coated onto the substrate. The metallic resistor has varied electrical resistance depending on temperature. A pair of leads are electrically connected to the metallic resistor. A plurality... | 03/11/1997 |
| 5321386 | Resistor element A resistor element includes a cylindrical, insulating ceramic substrate, a spiral resistor formed on said ceramic substrate, first and second lead wires inserted into the open ends of said ceramic substrate, a connector for making electrical connections b... | 06/14/1994 |
| 5300916 | Sensor element for a thermal type flowmeter A sensor element for a thermal type flowmeter including a ceramic substrate, a thin film, resistor of platinum provided on the outer surface of the ceramic substrate and an outer protective layer of glass provided for protecting the resistor. The glass co... | 04/05/1994 |
| 5048176 | Method of making a radiant heater A radiant heater with partly embedded and otherwise projecting heating coils (16) is produced in that the coils (16) are placed in grooves (14) of a tool or mold (13), the interior of the heating coils is partly filled with a filling material (17) and the... | 09/17/1991 |
| 5020214 | Method of manufacturing a hot wire air flow meter An exothermic resistor for use in a hot wire air flow meter, having a wire (2) in the form of a coil made of a metal, a pair of lead wires (3) connected to connections (21) formed at the opposite ends of the coil, and a support member (4) which integrally... | 06/04/1991 |
| 4909079 | Heat wire airflow meter A heat wire type airflow meter having a resistance element disposed within an airflow, the rate of which is measured, and a detection circuit for producing an airflow rate signal by detecting resistance change of the element depending on the airflow rate,... | 03/20/1990 |
| 4804935 | Sensor for measurement by electrical heating and method for manufacture of the same A sensor for electrical heating measurement has a core rod which is partly reduced in diameter to form an annular recess, an inner electrically insulating layer formed within the annular recess, a thin metal wire wound about the inner electrically insulat... | 02/14/1989 |
| 4652852 | Device for holding helically wound wire resistor of a wire-wound type potentiometer Device for holding a helically wound wire resistor of a potentiometer in a helical groove comprising, an outer cylindrical member having an inwardly projecting ridge extending over the length thereof and a projecting claw, and an inner cylindrical member ... | 03/24/1987 |
| 4525622 | Ceramic glow plug The heat generating member in a ceramic glow plug is a coil embedded in the ceramic. The coil is wound to have a coil angle, i.e. an angle formed between the coil and a line parallel to the coil axis, of no more than 60°. The ceramic may be a non-oxide c... | 06/25/1985 |
| 4278877 | Electrical heating unit with flattened embedded heating coil Resistance heating coils, flattened longitudinally along two sides to have generally oval cross-sections, are embedded in situ in a lightweight ceramic fiber insulating body adjacent to and extending along beneath the surface of the insulating body. Elect... | 07/14/1981 |
| 4064472 | Compact inductor A miniature inductor comprising a sheet metal frame having a slot that divides the frame into two separated halves, each half having a pair of upstanding tabs and a pair of inclined tapered flanges. A plate of insulating material extends across the slot a... | 12/20/1977 |
| 3952182 | Instantaneous electric fluid heater A miniature electric fluid immersion heater adapted for instantaneously heating relatively small bodies or flow increments of fluid to a predetermined temperature. The heater is particularly adaptable to be mounted immediately in advance of a hot water fa... | 04/20/1976 |
