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 |
| 7915995 | Compensation of field effect on polycrystalline resistors A resistive circuit includes a first terminal and a second terminal and polycrystalline first and second resistive segments coupled between the first and second terminals. A third terminal A is coupled to the first resistive segment, and a third terminal B is couple... | 03/29/2011 |
| 7616089 | Compensation of field effect on polycrystalline resistors A resistive circuit includes a first terminal and a second terminal and polycrystalline first and second resistive segments coupled between the first and second terminals. A third terminal A is coupled to the first resistive segment, and a third terminal B is couple... | 11/10/2009 |
| 7400132 | Current sensor and method of manufacturing the same A current sensor includes a semiconductor substrate, a ring shaped magnetic core having a center opening and a gap and provided to a surface of the substrate, and a Hall element provided to the surface and placed in the gap of the magnetic core such that a control c... | 07/15/2008 |
| 7369029 | Wireless communication fuse state indicator system and method An electrical fuse and method therefor includes a protective body, terminal elements extending from said protective body, and a primary fuse element extending within said protective body and electrically connected between the terminal elements, and an identification... | 05/06/2008 |
| 7369031 | Potentiometer A non-contact type potentiometer with high resolution of rotation amount detection applicable to endlessly multiple rotations. The potentiometer has an endlessly rotatable first shaft, a first detection unit that magnetically detects a rotation angle of the first sh... | 05/06/2008 |
| 7358846 | Magnetic spin valve with a magnetoelectric element The present invention provides systems and method utilizing magnetoelectric materials such as Cr2O3 to construct tunneling magnetoresistence and/or giant magnetoresistence structures for memory and/or logical circuitry. An applied voltage diffe... | 04/15/2008 |
| 7358724 | Integrated magnetic flux concentrator A method and apparatus provide a substrate having a depression into which a magnetic material is disposed, forming a magnetic flux concentrator and/or a permanent magnet. A magnetic field sensing element can be disposed proximate to the depression. ... | 04/15/2008 |
| 7342394 | Magnetic detector arrangement and method for obtaining a symmetric magnetic field A magnetic detector arrangement includes two equally polarized magnets positioned next to each other with the polarization in the same direction, and a magnetic detector element, wherein the magnets are arranged at a predefined distance apart such that the magnetic ... | 03/11/2008 |
| 7341887 | Integrated circuit die configuration for packaging Integrate circuit die terminal arrangements and configurations for mounting an integrate circuit die on a package substrate to reduce package transmission paths. In one embodiment, terminals for signals sensitive to trace length outside a die are arranged at the cor... | 03/11/2008 |
| 7326869 | Tactile feedback plunger switch A tactile feedback switching mechanism having a plurality of switching states. The tactile feedback switching mechanism includes a plunger switch having a plunger. When the plunger is displaced a given distance the switch changes state. A covering lies at least over... | 02/05/2008 |
| 7312609 | GMR sensor element and its use A GMR sensor element is proposed, having a rotationally symmetrical positioning of especially eight GMR resistor elements which are connected to each other to form two Wheatstone's full bridges. This GMR sensor element is especially suitable for use in an angle sens... | 12/25/2007 |
| 7268536 | Magnetic linear position sensor A magnetic linear position sensor comprises a first yoke which is made of soft magnetic material; a first magnet which is placed at the first yoke, and whose surface is the N-pole and is inclined; a second magnet which is placed at the first yoke, and whose surface ... | 09/11/2007 |
| 7250844 | Stick lever unit for radio controlled device and radio controlled device equipped with the same A stick lever unit for a radio-controlled device that is capable of easily changing the type of stick lever holding mechanism by a user is provided. The stick lever unit includes a fixing member to which a variable resistor is attached, a rotational member equipped ... | 07/31/2007 |
| 7248037 | Position sensing device for determining a relative position of a magnet with respect to a magnetic field sensing element pair A position detector includes a pair of magnetic sensors spaced from each other and a magnetic force generator movable relative to the pair of magnetic sensors. The length of the magnetic force generator along the space between the magnetic sensors is equal to or lar... | 07/24/2007 |
| 7222810 | Magnetic fishing reel clicker A clicker mechanism for a fishing reel is described. A typical fishing reel has a spool defining an orifice and a shaft passing through the orifice. A component having an irregular surface, such as a gear-like component with teeth or a ring defining a serrated inner... | 05/29/2007 |
| 7221143 | Hall IC type current sensor of vehicle-mounted power converter In a Hall IC type current sensor of a vehicle-mounted power converter which includes a bus bar which supplies electricity to a vehicle-mounted power converter, a Hall IC which detects a current supplied to the bus bar, and a control board on which a control circuit ... | 05/22/2007 |
| 7202771 | Magnetic field sensing device Two sensor units are formed from magnetoresistive material. Elements of the first sensor unit have a total anisotropy field in a first direction. Elements of the second sensor unit have a total anisotropy field in a second direction. An integral coil sets a directio... | 04/10/2007 |
| 7191648 | Level gauge for oil-filled transformer, choke, or tap changer An electric power apparatus has a oil-filled vessel in which a float is connected to a float shaft that rotates as the float rises and falls with the level of oil. A level indicator has a display shaft extending along and pivotal about an axis, and coupled to the fl... | 03/20/2007 |
| 7183893 | TMR sensor with oxidized alloy barrier layer and method for forming the same A tunneling magnetoresistive stack includes a first ferromagnetic layer, a tunnel barrier layer on the first ferromagnetic layer, and a second ferromagnetic layer on the tunnel barrier layer. The tunneling magnetoresistive stack exhibits a negative exchange coupling... | 02/27/2007 |
| 7170208 | Connector with flux concentrator for electric motor A connector for an electric motor including a magnetic ring which is the seat of a magnetic field tied to operating parameters of the motor. A magnetic flux conduction member forms a flux concentrator interposed, when a connector is fixed on the motor, between the m... | 01/30/2007 |
| 7129691 | Current sensor and current sensor manufacturing method A low-cost, current sensor suitable for mass production and a manufacturing method thereof are provided. The current sensor is small with high sensitivity and can be packaged in a standard assembly line which is normally used when an integrated circuit is manufactur... | 10/31/2006 |
| 7126072 | Key switch and electronic device A jog dial switch, which functions as a key switch, includes a key sheet, a rotatable key top arranged on the key sheet, and a movement amount detector for detecting movement amount of the key top. The movement amount detector includes four permanent magnets arrange... | 10/24/2006 |
| 7119538 | Offset-reduced hall sensor A technique for determining an offset-reduced Hall voltage (Uh), and/or an offset voltage (UH, offset) of a Hall sensor (1) includes applying a Hall sensor current (I) at first and second taps (a1, a2, a3) of the Hall sensor (1), a... | 10/10/2006 |
| 7113063 | Rotation sensing Methods and apparatus implementing and using techniques for sensing rotations of a rotating device, including using at least one switch located in a first plane and a magnet rotating in a plane substantially parallel to the first plane about a rotation axis, the mag... | 09/26/2006 |
| 7109877 | Fault monitoring apparatus and method A fault condition monitoring apparatus for use with a fuse cutout includes a housing operable to be supported by the fuse cutout. The housing has first and second contacts operable to make electrical contact with fuse contacts on the fuse cutout when the housing is ... | 09/19/2006 |
| 7106233 | Integrated galvanomagnetic sensor array system Galvanomagnetic sensor array system and method for providing data interface to a basic sensor array are provided. The sensor system includes an array of galvanomagnetic elements, and a processor coupled to receive each output signal from the array of galvanomagnetic... | 09/12/2006 |
| 7095193 | Brushless DC motors with remote Hall sensing and methods of making the same A brushless DC motor apparatus includes a housing and a stator assembly coupled to the housing. The apparatus further includes a magnetic rotor assembly rotatably coupled to the housing. The magnetic rotor assembly is configured to rotate within the housing in respo... | 08/22/2006 |
| 7084622 | Methods for eliminating magnetic field and temperature related errors in magnetic sensors used for the measurement of coating thickness Methods for eliminating error in magnetic sensors used for measuring a coating thickness caused by static or changing external magnetic fields or temperature. The methods involve measuring an output voltage of a magnetic sensor, corresponding to an internal resistan... | 08/01/2006 |
| 7068030 | Magnetic field strength detector A magnetic field strength detector includes a magnetic field sensing element that outputs voltage as a function of magnetic field strength. In some embodiments, the magnetic field sensing element comprises a coil, and voltage is induced across the coil as a function... | 06/27/2006 |
| 7068132 | Compact magnetic induction switch An extremely compact low cost magnetic induction switch which may be activated by an extremely small operation force (approximately 1 g) has a movable member (2) and a coil spring (3) arranged inside a switch case (1), the spring coil (3)... | 06/27/2006 |
| 7049914 | Multiple output magnetic sensor A door position sensing system includes a door claw having first and second magnets mounted thereon, and a Hall sensor mounted so as to sense the magnetic fields of the first and second magnets. The first magnet is mounted in a door half-latch position, and the seco... | 05/23/2006 |
| 7049828 | Capacitive sensor for determining linear or angular position A capacitive sensor includes an electrode member with two spaced-apart electrodes and an air gap therebetween. A position reference plate, which can be straight for sensing linear position or curvilinear for sensing angular position, is disposed in the air gap, with... | 05/23/2006 |
| 7046117 | Integrated magnetic field strap for signal isolator An integrated signal isolator is provided to isolate first and second circuits. First, second, third, and fourth magnetoresistors of the isolator are coupled together so as to form a Wheatstone bridge. The first second, third, and fourth magnetoresistors are arrange... | 05/16/2006 |
| 7026809 | Magnetic sensor for detecting position and/or speed of a mobile target The invention relates to a position and/or speed sensor including a mobile target (2) with at least one tooth, a first permanent magnet (5), at least one second permanent magnet (11), and a probe (4) sensitive to the direction and intensi... | 04/11/2006 |
| 7026897 | Multiple output magnetic sensor A door position sensing system includes a door claw having first and second magnets mounted thereon, and a Hall sensor mounted so as to sense the magnetic fields of the first and second magnets. The first magnet is mounted in a door half-latch position, and the seco... | 04/11/2006 |
| 7016263 | Device for data input into a portable object The invention concerns a device for data entry into a portable object, in particular a watch, with display screen comprising a control button (1) consisting of an elastic mass (2) wherein is housed a permanent magnet (3) and a positioning analog... | 03/21/2006 |
| 6998741 | Magnetic current concentrator connector for electric motor A connector for an electric motor including a magnetic ring which is the seat of a magnetic field tied to operating parameters of the motor. A magnetic flux conduction member forms a flux concentrator interposed, when a connector is fixed on the motor, between the m... | 02/14/2006 |
| 6985066 | Controlled electron mobility galvanomagnetic devices A controlled electron mobility galvanomagnetic device comprising a layer of indium antimonide alloyed with a Group 13 isoelectronic element antimonide and doped n-type, the layer disposed on an insulating substrate. ... | 01/10/2006 |
| 6949924 | Electromechanical rotation sensing device An electromechanical rotation sensing device includes a mechanical sensing system for sensing a physical parameter; a rotational member rotated by the mechanical sensing system in response to the parameter sensed; a magnetic device movable with the rotational member... | 09/27/2005 |
| 6940269 | Meter unit having magnetic pointer position detector A speed meter unit has a magnetic pointer position detector, including an output coil, a detection coil and a magnetic piece. The output coil generates magnetic flux. The detection coil is for detecting the magnetic flux from the output coil. When a pointer has retu... | 09/06/2005 |
