Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7946167 | Constant temperature hot-conductor anemometer A constant temperature hot-conductor anemometer includes a set of electrically conductive pins including a pair of inner pins and a pair of outer pins. A conductor is electrically and mechanically coupled to the pins. A current source is coupled to the inner pins. T... | 05/24/2011 |
| 7866208 | Flow measuring device A flow measuring device has a flow channel block including a main flow channel whose both ends are open, and an auxiliary flow channel that branches from the main flow channel, a flow amount measurement element provided for the auxiliary flow channel, and a branch e... | 01/11/2011 |
| 7677097 | Heating resistor-type gas flowmeter In a gas flowmeter in which a rod and a sensor element are formed as a single body, for preventing heat of the sensor element from flowing into a sensor probe through a substrate (rod) so as to suppress considerable power consumption, and for obtaining a necessary r... | 03/16/2010 |
| 7658102 | Thermal flow sensor having an amplifier section for adjusting the temperature of the heating element A thermal flow sensor can adjust the temperature of a heating element in a highly precise and reliable manner with the use of simple circuits, devices and process steps. The sensor includes an amplifier section (7) that amplifies a voltage across opposite end... | 02/09/2010 |
| 7631555 | Thermal flowmeter for measuring a flow rate of fluid A thermal air flowmeter having excellent temperature characteristics and improved measurement accuracy. The thermal air flowmeter includes a temperature sensor disposed in a casing of the air flowmeter, a computing unit for correcting a flow rate detection voltage f... | 12/15/2009 |
| 7614296 | Method and device for fluid flow parameters determination A method and device for a liquid media parameters determination, wherein an extended heater oriented along the fluid flow is installed in the fluid flow. Fluid flow temperature is measured. The heater is heated up and the temperatures at the interfaces “heater fro... | 11/10/2009 |
| 7574909 | Thermal flow sensor having an amplifier section for adjusting the temperature of the heating element A thermal flow sensor can adjust the temperature of a heating element in a highly precise and reliable manner with the use of simple circuits, devices and process steps. The sensor includes an amplifier section (7) that amplifies a voltage across opposite end... | 08/18/2009 |
| 7568387 | Thermal flow sensor having an amplifier section for adjusting the temperature of the heating element A thermal flow sensor can adjust the temperature of a heating element in a highly precise and reliable manner with the use of simple circuits, devices and process steps. The sensor includes an amplifier section (7) that amplifies a voltage across opposite end... | 08/04/2009 |
| 7568388 | Thermal flow sensor having an amplifier section for adjusting the temperature of the heating element A thermal flow sensor can adjust the temperature of a heating element in a highly precise and reliable manner with the use of simple circuits, devices and process steps. The sensor includes an amplifier section (7) that amplifies a voltage across opposite end... | 08/04/2009 |
| 7562569 | Thermal flow sensor having an amplifier section for adjusting the temperature of the heating element A thermal flow sensor can adjust the temperature of a heating element in a highly precise and reliable manner with the use of simple circuits, devices and process steps. The sensor includes an amplifier section (7) that amplifies a voltage across opposite end... | 07/21/2009 |
| 7490511 | Flow sensor with flow-adaptable analog-digital-converter The flow sensor comprises a heater arranged between two sensing thermopiles. In addition, at least one monitoring thermocouple is provided for measuring the temperature of the heater. The signal from the monitoring thermocouple is used as a reference voltage for an ... | 02/17/2009 |
| 7487674 | Thermal flow sensor having an amplifier section for adjusting the temperature of the heating element A thermal flow sensor can adjust the temperature of a heating element in a highly precise and reliable manner with the use of simple circuits, devices and process steps. The sensor includes an amplifier section (7) that amplifies a voltage across opposite end... | 02/10/2009 |
| 7401510 | Heating resistor type airflow meter The time it takes for a hot-wire airflow meter to begin to operate normally upon startup of an automobile is reduced. A heat-generating resistor Rh for measuring airflow rate, a temperature-compensating resistor Rc, and a resistor R1 for detecting the current... | 07/22/2008 |
| 7377185 | Device and method of detecting flow rate/liquid kind, and device and method of detecting liquid kind A flow rate/liquid type detecting method for detecting the flow rate of a fluid and, at the same time, detecting any one of or both the type of the fluid and the concentration of the fluid, characterized in that: by using a flow rate/liquid type detecting apparatus ... | 05/27/2008 |
| 7370518 | Heating resistor type fluid flow rate measuring apparatus and control apparatus for internal combustion engine having the measuring apparatus To realize a control apparatus for an internal combustion engine having a heating resistor type air flow rate measuring apparatus which can effectively remove salinity adhered to the heating resistor. Salt adheres not only to the heating portion of a heating resisto... | 05/13/2008 |
| 7370535 | State measuring apparatus and operation control method for the same An oscillation-type state measuring apparatus has an oscillation-type sensor, a reference oscillation signal generating circuit for producing reference oscillation signals, a beat signal generating circuit for generating beat signals having a beat frequency by synth... | 05/13/2008 |
| 7369757 | Systems and methods for regulating power in a medical device A system for controlling a motor for use in a ventilation system may include a motor, a voltage adjustment system, a user interface, and a motor controller. The voltage adjustment system may be configured to adjust a voltage applied to the motor. The user interface ... | 05/06/2008 |
| 7360439 | Sample resistance measurement device In a circuit, as the bridge resistance of one side of a Wheatstone bridge circuit, a distortion gauge (fixed reference resistance) of which variation caused by environmental conditions is suppressed and a sample having a resistance component ΔR varied by the enviro... | 04/22/2008 |
| 7357133 | Triggering circuit for an aerosol drug-dispensing device An electronic gas flow triggering circuit for use in an aerosol drug dispensing device has a voltage source and a self-nulling circuit to which voltage is supplied from the voltage source. A hot wire anemometer filament forms a component of the bridge circuit which ... | 04/15/2008 |
| 7337661 | Thermal fluid flow meter having heat-generating resistor and temperature adjuster therefor A low-cost thermal flow meter that has good temperature characteristics and little variations. The thermal flow meter includes a sensor element including a heat-generating resistor and at least two temperature-measuring resistors disposed downstream and upstream. Th... | 03/04/2008 |
| 7331224 | Tilt-insensitive flow sensor A flow sensor is provided having a substrate with a sensing element and flow channel over the sensing element. The sensing element senses at least one property of a fluid. The flow channel is configured such that tilting the flow sensor does not have a significant e... | 02/19/2008 |
| 7333899 | Fluid flow rate sensor and method of operation A thermo-anemometer-type fluid flow rate sensor design and a method for its operation that overcome the response time limitations of prior known fluid flow rate sensors is disclosed. The fluid flow rate sensor includes a probe having a detection module adapted to ch... | 02/19/2008 |
| 7325449 | Thermal flow sensor having an amplifier section for adjusting the temperature of the heating element A thermal flow sensor can adjust the temperature of a heating element in a highly precise and reliable manner with the use of simple circuits, devices and process steps. The sensor includes an amplifier section (7) that amplifies a voltage across opposite end... | 02/05/2008 |
| 7287424 | Thermal type flow measurement apparatus having asymmetrical passage for flow rate measurement IN a thermal type flow measurement apparatus, a heating element is disposed in a fluid passage and generates heat by a passage of a current through itself. A first thermal sensitive element is disposed adjacent upstream of the heating element in a direction of fluid... | 10/30/2007 |
| 7286943 | In-vehicle electronic device, thermal flowmeter and electronic circuit board Radio-frequency currents vary phases of the radio-frequency voltages appearing at both positive and negative input terminals of an operational amplifier depending on inductance and resistance of conductors forming an electronic device. If the phases of radio-frequen... | 10/23/2007 |
| 7284424 | Thermal air flow rate measuring apparatus and its flowmeter and internal combustion engine and thermal air flow rate measuring method using it A thermal air flow rate measuring apparatus of great precision wherein sensitivity is enhanced by sensors having different output characteristics and an operating device employing a digitized signal. The sensitivity and temperature can be corrected easily depending ... | 10/23/2007 |
| 7281423 | Characteristics adjusting apparatus of physical quantity sensing device and a thermal type air flow measuring instrument, and associated adjusting method The output characteristics of the sensing device or the control quantity of the sensing element can be adjusted by extracting an adjusting terminal in addition to a power source terminal, a ground terminal, an output terminal and the like outside a housing containin... | 10/16/2007 |
| 7278309 | Interdigitated, full wheatstone bridge flow sensor transducer A sensor apparatus includes a heating element comprising an upstream side and a downstream side. A first heat sensing set is generally configured adjacent to the upstream side of the heating element and comprises a first sensing element and a second sensing element,... | 10/09/2007 |
| 7272512 | Flow sensor signal conversion A method of obtaining at least one representation of a characteristic function of a sensor from a test fluid during calibration of the sensor according to a sensor model having a transfer function operating on flow rate, at least one sensor property and at least one... | 09/18/2007 |
| 7251995 | Fluid flow sensor Two heat generating resistors are formed on a substrate in the upstream side with respect to an air flow direction and two other heat generating resistors are formed in the downstream side. A thermometer resistor for detecting a temperature in the intake manifold is... | 08/07/2007 |
| 7243022 | Apparatus for communicating inlet air parameters of an internal combustion engine Measured engine inlet air temperature and flow parameters are communicated to an engine controller with a single waveform. A variable frequency digital input signal representative of inlet air flow is combined with a variable amplitude analog signal representative o... | 07/10/2007 |
| 7235987 | Sensor device using pair of resistive sensor controlled beat oscillators A sensor device is disclosed that includes a sensor, in which a resistance value is changed in accordance with a change in an environment of the sensor. The sensor device also includes a beat oscillator having plural oscillators of different oscillating frequencies.... | 06/26/2007 |
| 7230552 | Temperature compensation apparatus, systems, and methods In some embodiments, apparatus and systems, as well as methods, may include providing an analog temperature output responsive to a combination signal comprising a combination of an analog compensation output and a reference signal, and converting the analog temperat... | 06/12/2007 |
| 7225669 | Heating resistance flow rate measuring apparatus A heating resistance flow rate measuring apparatus which can use a power source of an ECU in an automobile without requiring an expensive protective circuit and regulator. Heating of temperature detecting resistors themselves causes temperature changes on the windwa... | 06/05/2007 |
| 7222029 | Attitude insensitive flow device system and method Embodiments of the present invention provide systems and methods for attitude insensitive flow devices. One embodiment of the present invention can include a flow device comprising a processor and a computer readable medium accessible by the processor that stores a ... | 05/22/2007 |
| 7213455 | Thermal type gas flow measuring instrument A thermal type gas flow measuring instrument measures gas flow with high precision by accurately correcting changes in radiation heat characteristics of a heating resistor due to contamination. The instrument comprises a second heating resistor 30 whose resis... | 05/08/2007 |
| 7205781 | Mass air flow circuit having pulse width modulation feedback control A circuit for measuring the mass air flow rate through a duct is disclosed. The circuit includes a bridge circuit, a first amplifier, an oscillator, a comparator and a switch. The bridge circuit has a plurality of resistors arranged to output first and second bridge... | 04/17/2007 |
| 7204264 | High pressure capillary micro-fluidic valve device and a method of fabricating same A freeze-thaw valve and a method of micro-machining the freeze-thaw valve is provided and includes a valve housing, wherein the valve housing defines a housing cavity and includes a housing inlet, a housing vent, a capillary tubing inlet and a capillary tubing outle... | 04/17/2007 |
| 7201049 | Pulsed thermistor sensor A thermistor is pulsed with energy, and a time constant of decay of temperature is calculated based on measured resistance of the thermistor over a number of known intervals. The time constant is representative of the mass air flow. The ambient air temperature may b... | 04/10/2007 |
| 7201048 | Measuring device for a flow sensor, in particular an air mass sensor for internal combustion engines and method for measuring air flows A measuring device for a flow sensor is provided, in which the drift is minimized. ... | 04/10/2007 |
