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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 8181537 | Linearized torque flow sensor A fluid flow meter is responsive to measured torque force imposed by fluid flow over a static impeller. Exponential torque relationships imposed upon a static torque shaft by fluid flow over a static impeller are linearized by a resilient torque shaft restraint and ... | 05/22/2012 |
| 8100023 | Rotary positive displacement flowmeter A rotary positive displacement flowmeter of the type utilizing two displacement rotors and a blocking rotor with the blocking rotor having a single recess and the displacement rotor cylinders being of substantially similar size as the blocking rotor, resulting in a ... | 01/24/2012 |
| 7921738 | Device for identifying the location of coal ropes An apparatus (100) operative for purposes of detecting the presence of a coal rope within a coal delivery pipe (200) is provided. The apparatus (100) includes a rod (105) that is operative to flex when struck by a coal rope that is presen... | 04/12/2011 |
| 7337084 | Switch-activated zero checking feature for a Coriolis flowmeter Descriptions are provided for implementing flowmeter zero checking techniques. In operating a flowmeter, it may be the case that, even if previously calibrated, the flowmeter will produce erroneous measurements, e.g., will indicate a non-zero flow during a period of... | 02/26/2008 |
| 7318357 | Machine and method for allowing different fluid or gas flow rates in different directions in a conduit A machine for allowing different fluid or gas flow rates in different directions through a conduit with a freely pivotable valve element, and a valve element stop so as can provide for limited flow of a fluid or gas in one direction and full flow in the reverse dire... | 01/15/2008 |
| 7305893 | Oscillating vane actuator apparatus and method for active flow control An oscillating vane actuator for active control of fluid flow over a surface includes a pivoted vane surrounded by a wedge-shaped chamber, and first and second conduits with openings adjacent the surface. The actuator also includes a rotating shaft with a connecting... | 12/11/2007 |
| 7305870 | Apparatus for testing a moving vehicle An apparatus and method is provided for testing at least one performance characteristic of a vehicle. ... | 12/11/2007 |
| 7287699 | Sensor calibration method and systems A sensor calibration system includes a sensor having one or more sensing components formed on a substrate. A barcode can also be configured or printed from or on the, such that the barcode contains calibration data associated with a calibration of the sensor and the... | 10/30/2007 |
| 7281490 | Gauge having a magnetically driven pointer rotation device A gauge for indicating a measured variable such as pressure. The gauge includes a motion detection device including a drive magnet that is adapted to be moveable in response to changes in the variable. The pointer rotation device includes a pivot member, a power mag... | 10/16/2007 |
| 7258781 | Single-use long-life faucet-mounted water filtration devices Single-use long-life faucet mounted water filtration devices are disclosed. A bathroom water filtration device having two outlets for filtered water is disclosed. Additionally, a fountain head is included for use in the bathroom water filtration device. The water fi... | 08/21/2007 |
| 7246529 | Oscillating vane actuator apparatus and method for active flow control An oscillating vane actuator for active control of fluid flow over a surface includes a pivoted vane surrounded by a wedge-shaped chamber, and first and second conduits with openings adjacent the surface. The actuator also includes a rotating shaft with a connecting... | 07/24/2007 |
| 7241120 | Piston machine with ported piston head A piston machine includes a cylindrical wall (2) defining a swept volume (1) and having a plurality of gas inlet openings (5), and a piston (3) reciprocating in the swept volume (1), and the piston head (12) of which is form... | 07/10/2007 |
| 7231836 | Device for monitoring an air supply flow or a volumetric air flow The invention relates to a device for monitoring an air supply flow or a volumetric air flow, in particular for ventilators which can also be applied for extremely low flow speeds and/or throughput rates. The aim of the invention is to produce a device cheaply and s... | 06/19/2007 |
| 7201068 | Water cut meter for measurement of water in crude oil An apparatus, systems, and methods for measuring an amount of oil in a flow of fluid are provided. A housing defines an interior passage configured to pass a flow of fluid. A capacitance sensor, which suitably is a pair of insulated electrodes, is configured to resp... | 04/10/2007 |
| 7201066 | System for automatic tire inflation An apparatus and method for measuring gas flow rates and an improved automatic vehicle tire inflation system which utilizes the inventive gas flow measurement apparatus and method. The gas flow measuring apparatus and method utilize a porous media material effective... | 04/10/2007 |
| 7201185 | Coupled drive multi-position fluid valve apparatus and method A multi-position micro-fluidic valve system that includes an actuator assembly with a housing and a drive shaft rotatably disposed in the housing for rotational displacement about a drive axis thereof. One end of the drive shaft is configured to couple to a drive mo... | 04/10/2007 |
| 7185548 | Apparatus and method for measuring flow between ends of a break in a fluid line An apparatus and method for measuring fluid flow in a break between closely spaced confronting ends of a fluid line including first and second angularly extending conduit sections forming a U-shaped assembly housing straightening vanes and a metering device. ... | 03/06/2007 |
| 7168330 | Multi-parametric media transducer A multi-parametric transducer is provided. In one aspect of the invention, the multi-parametric transducer includes an enclosure having an inner bore that defines a port, an inner chamber coaxial with the inner bore and disposed in the enclosure, and a sensing tube ... | 01/30/2007 |
| 7127953 | Target flow meters A target flow meter has a target with a broad face attached to the free end of a rigid stalk. A fixed end of the stalk is attached to a rigid support secured in the system to be measured with the broad face of the target disposed transverse to the fluid flow. The su... | 10/31/2006 |
| 7121299 | Regulator valve with flow indicator for a hot-water heating system The valve includes an intake duct (13) for conveying water into the valve, an externally projecting tubular body (20) of a transparent with an internal cavity (21) and a flow indicator rod (40), slidable inside the valve, with a lower por... | 10/17/2006 |
| 7124037 | Devices, systems, and methods for monitoring the operation of an injection molding machine Devices, systems, and methods for monitoring the operation of an injection molding machine, for example, a wax injection molding machine, are disclosed. The devices, systems, and methods may be used for injection molding machines having an injection die, a molding m... | 10/17/2006 |
| 7104143 | Oscillating vane actuator apparatus and method for active flow control An oscillating vane actuator for active control of fluid flow over a surface includes a pivoted vane surrounded by a wedge-shaped chamber, and first and second conduits with openings adjacent the surface. The actuator also includes a rotating shaft with a connecting... | 09/12/2006 |
| 7105757 | Magnetic flow switch, for aspirators in particular A magnetic flow switch (1) is described that includes a body (2) defining a chamber (20) destined to have a fluid flow pass through it, an excitation magnet (4) placed in a shuttle (3) mounted such that it can slide within the cham... | 09/12/2006 |
| 7096729 | Disposable fluid flow sensor A disposable fluid flow sensor is disclosed herein, which generally includes a flow channel assembly comprising a flow channel tube in association with a disposable flow channel portion. A sensor die is located approximate to a thin interface or membrane formed from... | 08/29/2006 |
| 7028560 | Method to linearly measure gas volume flow in ducts and flow sensor A method to linearly measure the flow of a gas in ducts, and a gas flow sensor using such a method are disclosed. In order to obtain a linear ratio between the differential pressure and the volumetric flow of a gas, a rectangular section elbow and a rectangular flex... | 04/18/2006 |
| 7024945 | Flow sensing apparatus A flow sensing apparatus for detecting fluid flow rate and direction is described. The flow sensing apparatus includes a flow-responsive element projecting into the fluid flow path, and a position sensor which detects the degree and direction of any change in positi... | 04/11/2006 |
| 7013914 | Throttle valve The present invention relates to a throttle valve, particularly for controlling a liquid flow in a central heating or an air conditioning system, with a flow control unit having a first and a second element (18, 30), which are movably mounted relative to each... | 03/21/2006 |
| 7016790 | In-line hot-wire sensor for slurry monitoring An in-line hot-wire sensor for monitoring the mixing and the flow rate of slurry is disclosed. The hot-wire sensor may include a number of resistors organized into a Wheatstone bridge, as well as a frequency-domain transform mechanism. The resistors include a hot-wi... | 03/21/2006 |
| 7007557 | Flow scale having a hingedly suspended impact plate An impact flow scale includes a first tube, disposed substantially vertically a second tube, disposed with a downward inclination and having an inlet at an upper end thereof and a lower end of the second tube connected to the first tube, where the first and second t... | 03/07/2006 |
| 6997032 | Flowmeter zeroing techniques Descriptions are provided for implementing flowmeter zeroing techniques. In operating a flowmeter, it may be the case that, if not properly calibrated, the flowmeter will produce erroneous measurements, e.g., will indicate a non-zero flow during a period of zero flo... | 02/14/2006 |
| 6994109 | Fitting for measuring and regulating the flow rate of a hydraulic medium through a pipeline A fitting for measuring the flow rate of a hydraulic medium through a pipeline having a cylindrical fitting housing with a main flow channel includes a flow meter device with a measuring element and an indicator element. A side chamber is formed in a side connecting... | 02/07/2006 |
| 6971272 | Integrated fluid sensing device A circuit board, which includes one or more sensors, is integrated in a fluid control device, such as a valve manifold and a base plate. The fluid control device selectively directs a fluid used to control pneumatic or hydraulic equipment. The sensors are used to me... | 12/06/2005 |
| 6964541 | Fish safe screened water diversion apparatus An apparatus for separating animated objects such as fish or other objects between a non-diverted and diverted fluid stream. Embodiments may include a screen or similar selective pass through device that is arranged in a manner that is generally horizontal (more hor... | 11/15/2005 |
| 6945124 | Measurement system A device and method for measuring an area such as a throat area in a vane ring for gas turbine engines. Measurement inaccuracy introduced by image size changes as a result of the position deviation of the selected throat relative to a desired datum is reduced as a r... | 09/20/2005 |
| 6904809 | Magnetic flowmeter with integral liquid trap An integral trap magnetic flowmeter having an inlet in fluid communication with a sensing passage, the sensing passage intersecting a magnetic field, having electrodes for detecting a flow-dependent voltage induced by the passage of conductive liquid through the mag... | 06/14/2005 |
| 6892571 | Sensor for the measurement of flowspeeds and method for operating the same A sensor for measuring a flow speed of a fluid medium includes a housing with a carrier membrane disposed in the housing and being essentially in a form of a vane having a circumference and at least one edge region. Holding elements are arranged over a portion of th... | 05/17/2005 |
| 6889564 | Peak flow meter A peak flow meter for measuring a peak flow or air exhaled by a patient. The preferred peak flow meter includes a substantially hollow housing having a top portion, a bottom portion, an air inlet and at two air outlets. A flow restriction is disposed within the hous... | 05/10/2005 |
| 6829948 | Flow meter An input unit for receiving a signal from an oscillator corresponds to an ultrasonic wave received by the oscillator has an input impedance significantly smaller than an impedance of an inter-electrode capacitance in the oscillator. This arrangement allows the delay... | 12/14/2004 |
| 6769299 | Integral dual technology flow sensor A flow sensor includes a mounting plate, bending plate, and a sensing assembly. The mounting plate is mounted to an internal surface of an air hose. The mounting plate is flexibly coupled to the bending plate, which is displaced in response to the flow of gas. The s... | 08/03/2004 |
| 6763732 | Arrangement for measuring concentrate flow in connection with a flotation cell An arrangement for measuring material flow, particularly concentrate flow, in connection with a flotation cell. The arrangement comprises an elongate sensor element extending essentially over the whole transversal area of the material flow to be measured, and a meas... | 07/20/2004 |
