Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7391296 | Resilient material potentiometer A variable resistance device comprises a resistive member having a resistive resilient material. A first conductor is configured to be electrically coupled with the resistive member at a first contact location over a first contact area. A second conductor is configu... | 06/24/2008 |
| 7273201 | Tiltable mountings for payloads A tiltable mounting as claimed in any of the preceding claims, wherein the lever has a conical shaped roller engaging the cam, the roller being mounted for rotation on the lever about an axis which passes through the pivotal axis of the lever and the conical surface... | 09/25/2007 |
| 7263894 | Sensor and guide wire assembly The invention relates to a sensor (23) adapted for a sensor and guide wire assembly for intravascular measurements in a living body, wherein the sensor (23) comprises a pressure sensitive part (24) and an electronic part (25), said pressu... | 09/04/2007 |
| 7259703 | Device for recording laser trim progress and for detecting laser beam misalignment The device for detecting and tracking a status of a device under laser trim includes: a series connected string of trim tracking links; and a plurality of detecting devices wherein each detecting device is coupled in parallel with a corresponding trim tracking link.... | 08/21/2007 |
| 7190251 | Variable resistance devices and methods A method of providing a variable resistance from a resistive member including a resistive resilient material comprises electrically coupling a first conductor with the resistive member at a first contact location over a first contact area; and electrically coupling ... | 03/13/2007 |
| 7167075 | Dual design resistor for high voltage conditioning and transmission lines A dual resistor for eliminating the requirement for two different value resistors. The dual resistor includes a conditioning resistor at a high resistance value and a run resistor at a low resistance value. The run resistor can travel inside the conditioning resisto... | 01/23/2007 |
| 7154370 | High precision power resistors A high precision power resistor having the improved property of reduced resistance change due to power is disclosed. The resistor includes a substrate having first and second flat surfaces and having a shape and a composition; a resistive foil having a low TCR of ab... | 12/26/2006 |
| 7106120 | PCMO resistor trimmer Using programmable resistance material for a matching resistor, a resistor trimming circuit is designed to reversibly trim a matching resistor to match a reference resistor. The programmable resistance materials such as metal-amorphous silicon metal materials, phase... | 09/12/2006 |
| 7084691 | Mono-polarity switchable PCMO resistor trimmer Using programmable resistance material for a matching resistor, a resistor trimming circuit is designed to reversibly trim a matching resistor to match a reference resistor. The programmable resistance materials such as metal-amorphous silicon metal materials, phase... | 08/01/2006 |
| 7032292 | Method of manufacturing high Q on-chip inductor A high Q on-chip inductor includes a primary winding and an auxiliary winding that is coupled to receive a proportionally opposite representation of an input of the primary winding. Further, the auxiliary winding has an admittance that is greater than the admittance... | 04/25/2006 |
| 7002114 | Methods and apparatus for a variable resistor configured to compensate for non-linearities in a heating element circuit An improved variable resistor at least partially compensates for non-linearities in an electrical circuit containing a heating element, for example, a thin-film heating element. A controllable heater includes a heating element, a voltage source (for example, a stand... | 02/21/2006 |
| 6943705 | Method and apparatus for providing an integrated membrane switch and capacitive sensor A circuit assembly for providing a switch sensor and a capacitive sensor. The circuit assembly has a first pattern of conductive material in a first plane and a second pattern of conductive material in a second plane. An insulating member in an intermediate plane se... | 09/13/2005 |
| 6933470 | Incremental seal wire activation A method and apparatus for incremental seal wire activation, in one embodiment, is a method of sealing a seam of a bag. The method includes sealing a first side of the seam utilizing a first configuration. The method farther includes vacuuming gases from the bag. Th... | 08/23/2005 |
| 6909354 | Electronic pressure sensitive transducer apparatus and method for manufacturing same The cost and complexity of an electronic pressure sensitive transducer are decreased by constructing such a transducer directly on a printed circuit board containing support electronics. Conductive traces are formed on the printed circuit board to define a contact a... | 06/21/2005 |
| 6906700 | 3D controller with vibration A hand operated controller or converter structured for allowing hand inputs to be converted or translated into electrical outputs, the controller structured with a plate or platform moveable relative to a base or housing about two mutually perpendicular axes general... | 06/14/2005 |
| 6794982 | Multidirectional input device and electronic apparatus comprising it A multidirectional input device includes ring-shaped resistance element layer 18, first conductive layer 22 and second conductive layer 23 shaping in arcs corresponding to resistance element layer 18, and knob 14 having ring-shaped... | 09/21/2004 |
| 6769170 | Method for stabilizing properties of a ferromagnetic tunnel junction element A method of manufacturing a ferromagnetic tunnel junction element, having an insulating film, a first ferromagnetic film and a second ferromagnetic film, including a step of turning the ferromagnetic tunnel junction element on electricity for a given period before a... | 08/03/2004 |
| 6750408 | Multi-directional operation switch and multi-directional input device using the same In a multi-directional operation switch, an operating disk, upon being pressed at its upper side, tilts to depress a elastic pressing member, thus making hard rings of the driving member to press a resistor sheet sequentially. This operation allows resistor layers b... | 06/15/2004 |
| 6737990 | Key input apparatus interface A compact key input apparatus interface includes a resistive element and a number of key contacts on the resistive element. The keys of a key input apparatus are disposed to provide electrical contact between a voltage source and the resistive element at a particula... | 05/18/2004 |
| 6661332 | Press-type varistor switch A press-type varistor switch is disclosed. A center of an upper cover is formed with a round hole. A head of a silicide cap is embedded into the round hole. Opposite sides of the seat are formed with a metal guide pin. The head of the silicide cap protrud... | 12/09/2003 |
| 6420956 | Detection device in which output varies with amount by which elastically deformable contact element is pressed A first resistive element and a second resistive element are serially connected to each other, and a contact element having a lower resistivity than the first resistive element elastically contacts the first resistive element. The resistance between both ... | 07/16/2002 |
| 6404323 | Variable resistance devices and methods A variable resistance device comprises a resistive member having a resistive rubber material. A first conductor is configured to be electrically coupled with the resistive member at a first contact location over a first contact area. A second conductor is... | 06/11/2002 |
| 6342829 | Accelerator opening degree sensor A sensor comprises a linear region (variable region) in which the output voltage is changed in proportion to the accelerator opening degree, and a stepped region (invariable region) in which the output voltage is not changed with respect to the accelerato... | 01/29/2002 |
| 6087925 | Joystick pointing device A curved disc joystick or pad with improved performance, reliability and durability can be used as a cursor pointing device for computers, remote controls, video games, consumer electronics, industrial controllers, automotive and other applications. A con... | 07/11/2000 |
| 6069552 | Directionally sensitive switch An electrical switch has spaced, facing coupler and carrier layers with a set of electrodes formed on the facing surfaces thereof. There is an aperture in the coupler layer. A conductive armature is disposed in the space between the coupler and carrier, a... | 05/30/2000 |
| 6021668 | Indicator system This invention includes a combustion engine fuel level indication system operable at 10 mA or lower and without any contact resistance buildup. The present system utilizes a noble metal ink formulation for both contacts of resistive path and a conductive ... | 02/08/2000 |
| 5847639 | Layered pressure transducer land method for making same A variable resistance transducer responsive to an applied pressure including a smooth resistive layer on a flexible substrate and deposited thereon by printing or imaging technology, small points of nonconductive or semiconductive material, and resistive ... | 12/08/1998 |
| 5816492 | Room temperature sensor and thermostat control device A thermostat control having improved user controls wherein an analog version contains a binary coded switch for selectively setting a setpoint temperature. The binary coded switch is configured to have discrete positions corresponding to a plurality of se... | 10/06/1998 |
| 5746088 | Fuel system low current rheostat This invention includes a combustion engine fuel level indication system operable at 10 mA or lower and without any contact resistance buildup. The present system utilizes a noble metal ink formulation for both contacts of resistive path and a conductive ... | 05/05/1998 |
| 5629569 | Thermal photocontrol switch circuit A self-configuring photoelectric control circuit for controlling operation of a load based on ambient light. The photocontrol circuit comprises a photocell responsive to ambient light, a heating resistor connected to the photocell, a bimetallic element in... | 05/13/1997 |
| 5550527 | Resistor device for controlling a rotational speed of a motor A resistor device for controlling a rotational speed of a resistance unit and an open-circuit means. A receiving recess is provided to any one side surface of a heat sink vertically affixed to a top surface plate of a housing. A resistance unit, which is ... | 08/27/1996 |
| 5525955 | Capacitor coupled potentiometer An annular resistor member having two non-contact ends is overlaid and adhered on the surface of a base, and a rotational shaft located at the central portion of the resistor member is pivotally axially supported via a bearing. A bent electrode arm is fit... | 06/11/1996 |
| 5267475 | Vertical sweep liquid level sensor A liquid level sensor is disclosed for measuring the amount of fuel remaining in the fuel tank of a motor vehicle. The liquid level sensor comprises a vertically oriented resistor element, a float, and a contact assembly. A conductive strip and a continuo... | 12/07/1993 |
| 5243317 | Magneto-resistor digitizer A digitizer whose sensing elements are made of magnetoresistive materials is designed for use with a computer system. The digitizer board includes a substrate made of dielectric material; a first array of strip-shaped magneto-resistors arranged on the fro... | 09/07/1993 |
| 5132658 | Micromachined silicon potentiometer responsive to pressure A silicon pressure chip operates in a two-wire resistive mode. A thin-film resistor located on a long silicon beam which is the thicker portion of a thin diaphragm is partially shorted out by a metallized deflection stop. The pressure response of the resi... | 07/21/1992 |
| 4958138 | Resistive position indicator Resistive position indicator has an enlongated resistive element with an electrical terminal at each end and a tap which can be brought into contact with the resistive element. A contact point divides the resistive element into two portions and is movable... | 09/18/1990 |
| 4870472 | Method for resistor trimming by metal migration A method for trimming a diffused or implanted resistor located within an integrated circuit is disclosed. This technique for trimming a resistor requires the use of high current pulses and geometric shaped metal contacts. The current pulses react with the... | 09/26/1989 |
| 4775884 | Integrated circuit having permanent adjustment circuitry which requires low adjustment current An integrated circuit resistor adjustment network with resistors (R1, R2, R3, R4) which may be paralleled by trimming resistors (R5, R7, R6, R8, respectively) upon electrical "zapping" of Zener diodes (Z1, Z2, Z3, Z4, respectively) connected in series wit... | 10/04/1988 |
| 4284972 | Vehicle mileage interval detector An apparatus for providing a service reminder when a vehicle has accumulated a predetermined mileage comprises a potentiometer operated by the highest order number wheel of the vehicle odometer to provide an output voltage which changes incrementally with... | 08/18/1981 |
| 4068281 | Thermally responsive metal oxide varistor transient suppression circuit A temperature responsive resistor is thermally connected to a body of metal oxide varistor material in transient suppression and other applications. In the event of excess energy dissipation in the varistor, the temperature of the thermally responsive res... | 01/10/1978 |
