Searching:
Search by keyword, patent number, inventor, assignee, city or state:
| Patent # | Description |
|---|---|
| US-6,242,913 |
Method for formation evaluation while drilling A logging while drilling (LWD) and measuring while drilling (MWD) method and device are disclosed for reducing the sensitivity of NMR measurements to tool... |
| US-6,242,912 |
System and method for lithology-independent gas detection using
multifrequency gradient NMR logging A well logging system and method are disclosed for detecting the presence and estimating the quantity of gaseous and liquid hydrocarbons in the near wellbore... |
| US-6,242,911 |
Field sensor and device and process for measuring electric and/or magnetic
fields A field sensor (1) comprising means for measuring a magnetic field and an electric field, wherein at least six capacitor plates (5, 6, 7, 15, 16, 17, 25, 26, 27,... |
| US-6,242,910 |
Magnetic head and disk tester with yaw correction A magnetic head and disk tester includes a magnetic head which is selectively positioned relative to a rotatably mounted magnetic disk to accomplish testing of... |
| US-6,242,909 |
Electrical sensing of valve actuator position A visual position indicator has a stator and a rotor with angularly displaced eccentricities for engaging corresponding spring biased actuators with magnets.... |
| US-6,242,908 |
Detection of passing magnetic articles while adapting the detection
threshold A method for detection of passing magnetic articles which includes an initial step of sensing an ambient magnetic field and generating a voltage, Vsig,... |
| US-6,242,907 |
Apparatus and method of determining the orientation of an object relative
to a magnetic field A method and apparatus for determining the orientation of an object relative to a reference magnetic field includes establishing generally adjacent to the object... |
| US-6,242,906 |
Systems and methods for calibrating an absolute position encoder Methods and systems for calibrating an absolute position encoder where a read head is moved relative to a scale of the absolute position encoder and the absolute... |
| US-6,242,905 |
Method for identifying the direction of rotation of a wheel using hall
probes A method of identifying a direction of rotation of a wheel using Hall probes which are disposed about the circumference of the wheel. In this case, a first, a... |
| US-6,242,904 |
Rotation detecting device for detecting direction of rotation A rotation detector (100) includes a first transmitting element (1) and a second transmitting element (3) each disposed opposite a gear rotor (5) attached to a... |
| US-6,242,903 |
Method for using an insulated electrical probe The voltage detection stick comprises an elongate and hollow casing member that has a front and a back. A tip is rotatably and removably attached to the front of... |
| US-6,242,902 |
Measuring configuration, and use of the measuring configuration A measuring configuration for transforming an electric variable on a high-voltage line into a measurable variable. An electrically conductive hollow body that... |
| US-6,242,901 |
True average wide dynamic range microwave power sensor using diode stack
attenuator-diode stack The invention provides a true average, wide dynamic range microwave power sensor using a diode-stack-attenuator diode stack technology. The invention provides a... |
| US-6,242,900 |
System for measuring partial discharge using digital peak detection A partial discharge measurement system is provided which comprises a digital peak detection circuit. The partial discharge measurement system digitizes and... |
| US-6,242,899 |
Waveform translator for DC to 75 GHz oscillography A waveform translator in which the frequency spectrum of a repetitive non band limited input signal is translated to an equivalent frequency spectrum which is... |
| US-6,242,898 |
Start-up circuit and voltage supply circuit using the same A start-up circuit supplying a start-up current to a band gap reference voltage circuit at the time of start-up so as to start the band gap reference voltage... |
| US-6,242,897 |
Current stacked bandgap reference voltage source An on-chip voltage reference supply operates in the current domain rather than the voltage domain, implemented with a single diode drop to reduce power supply... |
| US-6,242,896 |
Converting available electrical power to desirable electrical power Techniques are disclosed for converting available electrical power to desirable electrical power. One embodiment of the techniques calls for a boost circuit to... |
| US-6,242,895 |
Controller of adjustable DC voltage for a transformerless reactive series
compensator A controller for controlling a reactive series compensator serially inserted at compensator terminals into a power transmission line for controlling the line... |
| US-6,242,894 |
Battery conditioning scheme A portable radio (306) provides a selectable and/or automatic battery conditioning mode of operation (400). Battery conditioning is achieved by discharge state... |
| US-6,242,893 |
Lithium-ion and lithium polymer battery recharging A safety circuit for lithium-ion and lithium polymer cells which provides for greater accuracy in control of the limiting voltages and currents during... |
| US-6,242,892 |
Portable electronic device and method A portable electronic device such as a mobile telephone is powered by a battery and is arranged to operate in an off-mode, a standby mode and an on-mode of... |
| US-6,242,891 |
Battery charge indicator An automotive battery charge indicator uses an algorithm expressed by fixed component values to determine if the remaining charge in the battery has fallen below... |
| US-6,242,890 |
Charge/discharge control circuit and chargeable electric power source
apparatus A charge/discharge control circuit is provided for an electric power source apparatus in which a service life is prolonged. A voltage dividing circuit, an... |
| US-6,242,889 |
Combination battery charger/controller A battery powered device such as an electric vehicle includes a high power loads such as a drive motor (50), and on-board charging and discharging systems (20)... |
| US-6,242,888 |
Optimization of mobile station battery charging with a two slot charger by
sharing a charging period A battery charging station includes a first charging circuit for charging a first battery, a second charging circuit for charging a second battery and circuitry... |
| US-6,242,887 |
Vehicle with supplemental energy storage system for engine cranking A vehicle having an internal combustion engine that drives a generator and a cranking motor that cranks the engine is provided with a standard electrical system... |
| US-6,242,886 |
Apparatus and method for automatic recovery of sulfated lead acid batteries Apparatus and method for automatic recovery of sulfated lead acid batteries rely on monitoring battery voltage, current and internal resistance during battery... |
| US-6,242,885 |
Method for estimating induced electromotive force and speed of induction
motor, method for correcting... A three-phase-to-two-phase converter detects two-phase currents of three-phase stator currents, converts the stator currents into a .gamma.-.delta. coordinate... |
| US-6,242,884 |
Dual stator winding induction machine drive A dual stator winding induction machine has two windings with input terminals which are supplied separately with drive power. The two stator windings have a... |
| US-6,242,883 |
Variable speed three-phase motor drive with two inverter circuits An apparatus and method for driving a three-phase motor from an AC energy source includes a converter connected between the energy source and an inverter. The... |
| US-6,242,882 |
Motor control apparatus The present invention addresses a problem as to how to provide a motor control apparatus which has a magnetic pole position inferring means capable of inferring... |
| US-6,242,881 |
Alternating current-starting device for a helicopter turbine engine unit The starting device for a turbine engine unit of a helicopter includes an electric motor starter, supplied from an electrical power source, which can be outside... |
| US-6,242,880 |
Tolerance based motion control system The present invetion involves a tolerance based motion controller. The controller is capable of processing a group of tolerance constraints. The tolerance... |
| US-6,242,879 |
Touch calibration system for wafer transfer robot A method and apparatus for automatically calibrating the precise positioning of a wafer handling robot relative to a target structure is disclosed. The apparatus... |
| US-6,242,878 |
Electronic control apparatus An electronic control apparatus comprising: a movable control member; a positional servo loop means including at least one motor means and being operable to maintain... |
| US-6,242,877 |
Control system and method for cycle-based processes An apparatus for controlling operation of a processing machine has a computer preferably with a computer aided design program configurable to model a kinematic... |
| US-6,242,876 |
Intermittent windshield wiper controller Windshield wiping systems commonly include a parking control, which delivers power to a wiping motor, while waiting for the wipers to reach a parked position.... |
| US-6,242,875 |
Motor driving apparatus An object is to realize acoustic noise reduction under a wide range of rotating speeds and together with PWM control. A signal (VCTL1) is generated as a... |
| US-6,242,874 |
Phase commutation of a switched reluctance motor by single phase sensing of
inductance A method for controlling a motor and a circuit for implementing the method are provided. The method includes the steps of providing a first current to a first... |
| US-6,242,873 |
Method and apparatus for adaptive hybrid vehicle control A method and apparatus for controlling a hybrid vehicle having an auxiliary power unit, at least one energy storage device, at least one electric drive motor for... |
| US-6,242,872 |
Programmable gradual illumination lighting device A programmable gradual illumination device (10) for disposition intermediate a conventional light fixture (100) and a conventional light bulb (200). The device... |
| US-6,242,871 |
High field effect neon lamp A low pollution, low energy consumption, high field effect neon lamp with scanning point selectable, the neon lamp includes a glass tube having at least one... |
| US-6,242,870 |
Light emitting device driving circuit A light emitting device driving circuit capable of, at all times, securing a constant optical output by a simple configuration even in a case of driving a light... |
| US-6,242,869 |
Fluorescent lamp stabilizer harmonics reduction method A method for reducing the harmonics created by rapid-start fluorescent lamp stabilizer balance systems is accomplished by increasing the number of turns of the... |
| US-6,242,868 |
Glow discharge apparatus having direct production of visible light from
neon or xenon Glow discharge apparatus comprises a light-transmissive body (101) defining a cavity (102) containing neon or xenon gas. The glow discharge is powered by one or... |
| US-6,242,867 |
Circuit for synchronizing the ignition of electronic ballast discharge
lamps A circuit for synchronizing the ignition in electronic ballast discharge lamps, wherein a half-bridge output stage of the electronic ballast has an upper switch... |
| US-6,242,866 |
Electric gas-lighter The electronic circuit of a gas-lighter has an electronic filter inserted between the input terminals of the gas-lighter and a current-discharge generating... |
| US-6,242,865 |
Field emission display device with focusing electrodes at the anode and
method for constructing same A field emission display device includes a baseplate having a set of field-induced electron emitters for each pixel in a display. Each set includes a plurality... |
| US-6,242,864 |
Plasma display panel with insulating layer having specific characteristics A plasma display panel of a matrix display type, having a first electrode and a second electrode which constitute a main electrode pair, the first electrode and... |
Copyright 2008−2012 Patents.com
