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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 7578203 | System for sand detection at constrictions or flow obstacles in a pipe or similar This invention relates to a system for measuring solid particles, e.g. sand, in a fluid flow in a pipe, comprising at least one acoustic sensor for registering acoustic signals generated from collisions between particles and a surface. The pipe comprises a constrict... | 08/25/2009 |
| 7409872 | Vortex flow meter It is an object to provide a vortex flow meter with less measurement errors caused by a temperature change, a pressure change, and a mechanical vibration, and capable of performing a precise measurement regardless of conditions, in addition, to provide a vortex flow... | 08/12/2008 |
| 7281361 | Method of article portioning A method for detecting and discriminating articles that are within a predetermined range of a specification into lots feeds a plurality of articles into an article portioning system having a counting head assembly that includes an article detecting unit located abov... | 10/16/2007 |
| 7274621 | Systems and methods for flow measurement A system estimates flow parameters associated with a fluid flow encountering a bluff body. The system includes multiple sensors distributed on a surface of a bluff body. The system further includes input circuitry and a sensor processing unit. The input circuitry re... | 09/25/2007 |
| 7174693 | Article portioning head system A system and an apparatus and method for detecting and discriminating articles that are within a predetermined range of a specification into lots. A counting head assembly includes at least an article detecting unit located above diverting gates which control the pa... | 02/13/2007 |
| 7134354 | Display for process transmitter A transmitter for use in a process control system for monitoring an industrial process includes a housing having a top and a bottom and a height extending therebetween. A parallelogram display is mounted to the housing. Sides of the parallelogram display are arrange... | 11/14/2006 |
| 7129603 | Corrosion protective coating for extending the lifetime of water cooled stator bar clips A water-cooled stator bar clip for electrical generators and a method for applying a corrosion-resistant protective coating, preferably Sc, Ti, Cr, Zr, Nb, Mo, Hf, Ta, W, Ni, and Al, and their alloys or oxides to existing stator bar end fittings in order to signific... | 10/31/2006 |
| 7109883 | Low power physical layer for a bus in an industrial transmitter A process variable transmitter connects a serial bus to an accessory load. A supply limiter circuit provides a first supply current limit and provides a stored energy output. A recessive driver circuit draws a drive current from the stored energy output and couples ... | 09/19/2006 |
| 7050172 | Optical sensing apparatus Optical sensing apparatus (10) for measuring the temperature and flow-rate of a fluid comprises a DFB fibre-laser (20) and an AO modulator (16) for modulating the power of pump radiation delivered thereto. Modulated pumping results in cyclical h... | 05/23/2006 |
| 7036381 | High temperature pressure transmitter assembly A pressure transmitter assembly for measuring a pressure of a process fluid includes an isolation diaphragm assembly. A pressure sensor is spaced apart from the isolation diaphragm assembly to provide thermal isolation. A conduit extends from the isolation diaphragm... | 05/02/2006 |
| 6973833 | Wafer and method A wafer for placement in a pipe. The wafer includes a housing having an outer surface and an orifice adapted to allow fluid flowing in the pipe to pass through the housing. The housing has at least a first port extending into the housing from the outer surface for h... | 12/13/2005 |
| 6969932 | Application of corrosion protective coating for extending the lifetime of water cooled stator bar clips A water-cooled stator bar clip for electrical generators and a method for applying a corrosion-resistant protective coating, preferably Sc, Ti, Cr, Zr, Nb, Mo, Hf, Ta, W, Ni, and Al, and their alloys or oxides to existing stator bar end fittings in order to signific... | 11/29/2005 |
| 6615673 | Integral shedder and mounting pad A vortex flow meter has a vortex shedder that spans a diameter or other chord of a fluid-guiding pipe, and protrudes partially externally through two opposed openings in the pipe wall. The vortex shedder includes two spaced-apart mounting pads and an elon... | 09/09/2003 |
| 5969236 | Particle sensor A particle sensor includes, a sensor element including (a) a vibrating section having a mass that is sensitive to the collision of solid particles contained in a fluid with the vibrating section and (b) a detecting section for detecting the vibration of t... | 10/19/1999 |
| 5864067 | Fluidic oscillator and a method of measuring a volume-related quantity of fluid flowing through such a fluidic oscillator A fluidic oscillator is symmetrical about a longitudinal plane of symmetry in which a longitudinal fluid flow direction is contained. The oscillator generates a two-dimensional jet of fluid that oscillates transversely relative to said longitudinal plane ... | 01/26/1999 |
| 5798465 | Method for actively damping global flow oscillations in separated unstable flows and an apparatus for performing the method The method for damping global flow oscillations (20a.x, 20b.x) in a flowing medium in the region of an unstable flow (10) separating itself from at least one boundary surface (11, 12) is comprised of detecting the global flow oscillations with a sensor sy... | 08/25/1998 |
| 5747671 | Axial flow particle sensor An axial-flow particle sensor has a sensor element and a housing. The outlet of fluid is placed at the opposite side of the inlet of the fluid, throughholes are formed at the circumference of the vibrating portion of the sensor element, and the vibrating ... | 05/05/1998 |
| 5691914 | Fluid flow measurement correcting system, and methods of constructing and utilizing same An apparatus for calculating fluid flow in a channel, comprising a probe member which detects fluid depth in the channel; a mechanism for measuring average fluid velocity in the channel; a mechanism for correcting the detected fluid depth based upon the m... | 11/25/1997 |
| 5635650 | Flowmeter having a vibrator therein A measuring unit 12 comprises a vibrator 13 which is disposed in a fluid flowing into the measuring unit 12 and is able to reciprocally vibrate in a direction of width of the flow passage when there occurs a differential pressure due to a flow velocity, a... | 06/03/1997 |
| 5627322 | Measurement sensor for a vortex flowmeter The invention relates to a measurement sensor for a vortex flowmeter having a damming member, a scanning element disposed downstream of the damming member, and an electromechanical transducer associated with the scanning element and embedded therein, wher... | 05/06/1997 |
| 5597964 | Torque measuring device for free running self-locking nut and bolt combination A torque measuring device is described that measures forces occurring during the interconnection of a nut to a bolt. The device has particular application with bolts having a key aperture in the tail end thereof and with nuts having a swaged exterior surf... | 01/28/1997 |
| 5540104 | Acoustic displacement flow meter An acoustic displacement flowmeter uses a high-compliance acoustic-type displacement transducer to measure fluid flow accumulated by temporarily restricting the flow of a fluid along a path. The displacement transducer signal, representative of fluid flow... | 07/30/1996 |
| 5509311 | Dynamically isolated vortex sensing pressure transducer A vortex flowmeter employs a differential pressure transducer converting an oscillation in a differential pressure to an alternating electrical signal, which differential pressure transducer is dynamically isolated from a structure including a flow passag... | 04/23/1996 |
| 5390542 | Membrane for a fluid flow meter A fluid flow meter has a housing with a fluid inlet and a fluid outlet and defining therebetween a fluid flow path. The flow meter has a flexible membrane having a inlet end mounted at an inlet region of the fluid flow path and a outlet end mounted at an ... | 02/21/1995 |
| 5347862 | Fluid flow meter The fluid flow meter includes a flexible membrane clamped between upstream and downstream centering springs to enhance membrane behavior and extend the fluid flow measurement range by automatically adaptively moving the apparent clamping points in respons... | 09/20/1994 |
| 5325725 | Water cooled stator winding leak detector A device for monitoring the leakage of cooling gas into the stator water cooling system is disclosed. The vent from the water cooling reservoir tank is connected to the inlet of a U-shaped passageway and the outlet of the passageway is connected to an atm... | 07/05/1994 |
| 5311781 | Flowmeter for object-bearing liquids The flowmeter of this invention computes the volumetric flow rate of a liquid by measuring the changing positions of objects carried in the flow. This information can be combined with data describing the size, shape and fraction of filling of the conduit.... | 05/17/1994 |
| 5257530 | Acoustic sand detector for fluid flowstreams The particle volume and particle mass production rate of particulate solids entrained in fluid flowstreams such as formation sand or fracture proppant entrained in oil and gas production flowstreams is determined by a system having a metal probe interpose... | 11/02/1993 |
| 5201322 | Device for detecting air flow through a passageway A device is disclosed for detecting the presence and direction of air flow through a passageway having a first opening and a second opening for air to flow therethrough in either a first direction or a second direction. The device comprises a piezoelectri... | 04/13/1993 |
| 5083452 | Method for recording multi-phase flows through a transport system A method for determining the flow situation in a transport system where the flow medium occurs in multi-phase and is conducted through a structural detail such as a choke valve, which acts on the flow of the medium and produces turbulence causing acoustic... | 01/28/1992 |
| 5069067 | Fluid flow meter The fluid flow meter includes a flexible membrane formed of a flexible material and containing an apparatus for providing the membrane with resilience for undulation. The membrane is mounted in the fluid flow path such that the pair of faces simultaneousl... | 12/03/1991 |
| 5058437 | Determining the quantity yield of a compressible fluid flowing through a pressure reducing valve The invention is intended for determining the quantity yield of a compressible fluid flowing through a conduit which is provided with a pressure reducing valve. According to the invention, this determination is made by using a vibration sensor which is su... | 10/22/1991 |
| 5048351 | Mass flow sensor A coriolis-type mass flow sensor suitable for aerospace use comprises a tuning fork which is immersed in the fluid whose mass flow is to be sensed, such that its tines extend across (i.e. perpendicular to) the direction of flow of the fluid. The whole tun... | 09/17/1991 |
| 4920794 | Fluid flow meter A fluid flow meter comprising a housing having a pair of fluid ports and defining therebetween a fluid flow path; a flexible membrane defining a pair of opposing faces and being mounted in the fluid flow path such that the pair of faces simultaneously def... | 05/01/1990 |
| 4869722 | Flow monitor of liquid drops A device for accurately monitoring the flow and flow rate of liquids that are released slowly so as to form drops. The drops fall from the tip of a drop funnel 13 onto a surface of liquid at the top of a reaction cell 16. Consequently, the height through ... | 09/26/1989 |
| 4736750 | Apparatus for testing pulmonary functions An apparatus for testing pulmonary functions uses a hollow tube having a venturi therein and an aspirator orifice in the hollow tube adjacent the venturi. A pressure signal analogous to the flow of air through the hollow tube is generated in the aspirator... | 04/12/1988 |
| 4674337 | Particle detector A device for estimating the number and the mass of particles borne in a fluid stream comprises a novel target on which the particles impact at a constant angle thereby generating acoustic signals proportional to the kinetic energy of the particles. The ac... | 06/23/1987 |
| 4671108 | Oscillatory anemometer An oscillatory anemometer for simultaneously indicating wind speed and direction employs a main member free to rotate under the influence of aerodynamic forces about a first axis and a fin mounted near the downwind end of the main member for pivotal movem... | 06/09/1987 |
| 4639593 | Airflow detection system using fiber optics An airflow detection system comprising a light source for generating an optical signal that is propagated in an optical guide having a plurality of sensors responsive to the presence of airflow, each of which modulates the intensity of the optical signal ... | 01/27/1987 |
| 4615222 | Gas flow monitor using a vortex generator A gas flow monitor has a T-shaped member adapted to conduct the gas flow of interest between its arms while a pressure transducer is disposed in its leg. A vortex or turbulence within the gas flow is generated within the T-shaped member to produce acousti... | 10/07/1986 |
