Source: http://www.google.com/patents/US6789458?dq=4740761
Timestamp: 2014-07-25 08:17:29
Document Index: 451912242

Matched Legal Cases: ['Application No. 10', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'Application No. 09', 'application No. 09', 'application No. 90', 'Application No. 60', 'Application No. 60']

Patent US6789458 - System for controlling hydraulic actuator - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsA system and method for controlling at least one hydraulic actuator of a hydraulic system includes a flow rate measurement of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator. The flow rate is used to calculate piston information corresponding to a position, velocity,...http://www.google.com/patents/US6789458?utm_source=gb-gplus-sharePatent US6789458 - System for controlling hydraulic actuatorAdvanced Patent SearchPublication numberUS6789458 B2Publication typeGrantApplication numberUS 10/317,311Publication dateSep 14, 2004Filing dateDec 12, 2002Priority dateMar 8, 2000Fee statusPaidAlso published asUS20010037724, US20030079603Publication number10317311, 317311, US 6789458 B2, US 6789458B2, US-B2-6789458, US6789458 B2, US6789458B2InventorsMark S. Schumacher, Terrance F. Krouth, David E. Wiklund, Richard J. Habegger, Richard R. HinemanOriginal AssigneeRosemount Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (106), Non-Patent Citations (37), Referenced by (5), Classifications (4), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetSystem for controlling hydraulic actuatorUS 6789458 B2Abstract A system and method for controlling at least one hydraulic actuator of a hydraulic system includes a flow rate measurement of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator. The flow rate is used to calculate piston information corresponding to a position, velocity, acceleration, and/or direction of movement of a piston of the hydraulic actuator. The piston information can then be provided to an output device to aid in the control of the hydraulic actuator. Alternatively, the piston information can be compared to a reference signal relating to a desired position, velocity, acceleration, and/or direction of movement of the piston to produce a control signal, which can be used to adjust the hydraulic fluid flow and provide the desired actuation of the piston.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS1480661Jul 2, 1920Jan 15, 1924Brown Francis HDifferential-pressure responsive deviceUS1698314Nov 9, 1923Jan 8, 1929Bailey Meter CoFlow meterUS2943640Sep 11, 1956Jul 5, 1960Gulf Oil CorpManifold for dual zone wellUS3160836Jul 1, 1960Dec 8, 1964Guerin Engineering IncElectrohydraulic actuatorUS3388597Oct 5, 1965Jun 18, 1968Whittaker CorpMeasuring and computing device and methodUS3430489Jan 30, 1967Mar 4, 1969Exxon Research Engineering CoModified turbine mass flow meterUS3494190Feb 28, 1968Feb 10, 1970Schwartzman Everett HFluid flow transducerUS3561831Dec 3, 1969Feb 9, 1971Columbia Research Lab IncTransducer system for detecting changes in applied forcesUS3657925Jun 1, 1970Apr 25, 1972Int Rectifier CorpPositive displacement flowmeterUS3678754Dec 11, 1969Jul 25, 1972Technion Res & Dev FoundationFlow measuring deviceUS3727520 *Nov 6, 1970Apr 17, 1973Sperry Rand CorpDigital electrohydraulic servo systemUS3817283May 30, 1972Jun 18, 1974Hewson JDifferential pressure transducer process mounting supportUS3958492Mar 12, 1975May 25, 1976Cincinnati Milacron, Inc.Electrically compensated electrohydraulic servo system with position related feedback loopUS4031813 *Oct 3, 1974Jun 28, 1977Sperry Rand LimitedHydraulic actuator controlsUS4100798Mar 28, 1977Jul 18, 1978Siemens AktiengesellschaftFlow meter with piezo-ceramic resistance elementUS4126047Apr 25, 1977Nov 21, 1978The United States Of America As Represented By The Secretary Of The Air ForceSurface acoustic wave rate sensor and position indicatorUS4193420Mar 2, 1978Mar 18, 1980Hewson John EDifferential pressure transducer process mounting support and manifoldUS4205592 *Dec 27, 1977Jun 3, 1980Beringer-Hydraulik GmbhHydraulic control systemUS4249164May 14, 1979Feb 3, 1981Tivy Vincent VFlow meterUS4275793 *Feb 14, 1977Jun 30, 1981Ingersoll-Rand CompanyAutomatic control system for rock drillsUS4281584May 30, 1979Aug 4, 1981Deutsche Forschungs- Und Versuchsanstalt Fur Luft- U. RaumfahrtElectro-hydraulic regulating drive and a fast-switching magnetic valve for use thereinUS4304136Feb 1, 1980Dec 8, 1981Transamerica Delaval Inc.Electrical transducer responsive to fluid flowUS4319492Jan 23, 1980Mar 16, 1982Anderson, Greenwood & Co.Pressure transmitter manifoldUS4381699Mar 20, 1980May 3, 1983Barmag Barmer Maschinenfabrik AgHydraulic control systemUS4424716Jun 15, 1981Jan 10, 1984Mcdonnell Douglas Corp.Hydraulic flowmeterUS4436348Oct 7, 1982Mar 13, 1984Lucas Industries Public Limited CompanyAnti-skid hydraulic braking systems for vehiclesUS4466290Nov 27, 1981Aug 21, 1984Rosemount Inc.Apparatus for conveying fluid pressures to a differential pressure transducerUS4520660Oct 12, 1983Jun 4, 1985Froude Consine LimitedEngine testing apparatus and methodsUS4539967Jun 25, 1984Sep 10, 1985Honda Giken Kogyo K.K.Duty ratio control method for solenoid control valve meansUS4543649Oct 17, 1983Sep 24, 1985Teknar, Inc.System for ultrasonically detecting the relative position of a moveable deviceUS4545406Apr 6, 1983Oct 8, 1985Flo-Con Systems, Inc.Valve position indicator and methodUS4557296May 18, 1984Dec 10, 1985Byrne Thomas EMeter tube insert and adapter ringUS4584472Feb 21, 1984Apr 22, 1986Caterpillar Industrial Inc.Linear position encoderUS4585021Feb 13, 1984Apr 29, 1986Maxon CorporationGas flow rate control regulator valveUS4588953Aug 11, 1983May 13, 1986General Motors CorporationMicrowave piston position locationUS4627196Sep 7, 1984Dec 9, 1986Western Gear Machinery Co.Pressure-compensated hydraulic positioning systemUS4631478Sep 22, 1982Dec 23, 1986Robert Bosch GmbhMethod and apparatus for using spring-type resistive elements in a measurement bridge circuitUS4671166Oct 4, 1985Jun 9, 1987Lucas Industries Public Limited CompanyElectro-hydraulic actuator systemsUS4689553Apr 12, 1985Aug 25, 1987Jodon Engineering Associates, Inc.Method and system for monitoring position of a fluid actuator employing microwave resonant cavity principlesUS4737705Nov 5, 1986Apr 12, 1988Caterpillar Inc.Linear position sensor using a coaxial resonant cavityUS4742794Sep 8, 1986May 10, 1988Bennett Marine, Inc.Trim tab indicator systemUS4744218Apr 8, 1986May 17, 1988Edwards Thomas LPower transmissionUS4745810Sep 15, 1986May 24, 1988Rosemount Inc.Flangeless transmitter coupling to a flange adapter unionUS4749936Nov 3, 1986Jun 7, 1988Vickers, IncorporatedPower transmissionUS4751501Oct 6, 1981Jun 14, 1988Honeywell Inc.In a variable air volume air conditioning duct systemUS4757745Feb 26, 1987Jul 19, 1988Vickers, IncorporatedMicrowave antenna and dielectric property change frequency compensation system in electrohydraulic servo with piston position controlUS4774465Feb 6, 1987Sep 27, 1988Vacuumschmelze GmbhPosition sensor for generating a voltage changing proportionally to the position of a magnetUS4841776Jun 29, 1987Jun 27, 1989Yamatake-Honeywell Co., Ltd.Differential pressure transmitterUS4866269May 19, 1988Sep 12, 1989General Motors CorporationOptical shaft position and speed sensorUS4901628Oct 9, 1985Feb 20, 1990General Motors CorporationHydraulic actuator having a microwave antennaUS4932269Nov 29, 1988Jun 12, 1990Monaghan Medical CorporationFlow device with water trapUS4938054May 3, 1989Jul 3, 1990Gilbarco Inc.Ultrasonic linear meter sensor for positive displacement meterUS4961055Jan 4, 1989Oct 2, 1990Vickers, IncorporatedLinear capacitance displacement transducerUS4987823Jul 10, 1989Jan 29, 1991Vickers, IncorporatedLocation of piston position using radio frequency wavesUS5000650May 12, 1989Mar 19, 1991J.I. Case CompanyVehicle, material loadingUS5031506Sep 23, 1988Jul 16, 1991Siemens AktiengesellschaftDevice for controlling the position of a hydraulic feed drive, such as a hydraulic press or punch pressUS5036711Sep 5, 1989Aug 6, 1991Fred P. GoodAveraging pitot tubeUS5072198Nov 6, 1990Dec 10, 1991Vickers, IncorporatedImpedance matched coaxial transmission systemUS5085250Dec 18, 1990Feb 4, 1992Daniel Industries, Inc.Orifice systemUS5104144Sep 25, 1990Apr 14, 1992Monroe Auto Equipment CompanyShock absorber with sonar position sensorUS5150049Jun 24, 1991Sep 22, 1992Schuetz Tool & Die, Inc.Magnetostrictive linear displacement transducer with temperature compensationUS5150060Jul 5, 1991Sep 22, 1992Caterpillar Inc.Multiplexed radio frequency linear position sensor systemUS5182979Mar 2, 1992Feb 2, 1993Caterpillar Inc.Linear position sensor with equalizing meansUS5182980Feb 5, 1992Feb 2, 1993Caterpillar Inc.Hydraulic cylinder position sensor mounting apparatusUS5218820Jun 25, 1991Jun 15, 1993The University Of British ColumbiaHydraulic control system with pressure responsive rate controlUS5218895Jun 15, 1990Jun 15, 1993Caterpillar Inc.Electrohydraulic control apparatus and methodUS5233293Nov 15, 1991Aug 3, 1993August Bilstein Gmbh & Co. KgSensor for measuring the speed and/or position of a piston in relation to that of the cylinder it moves inside of in a dashpot or shock absorberUS5241278Jun 29, 1992Aug 31, 1993Caterpillar Inc.Radio frequency linear position sensor using two subsequent harmonicsUS5247172Aug 21, 1992Sep 21, 1993The Boeing CompanyPosition sensing system with magnetic couplingUS5260665Apr 30, 1991Nov 9, 1993Ivac CorporationIn-line fluid monitor system and methodUS5274271Jul 12, 1991Dec 28, 1993Regents Of The University Of CaliforniaUltra-short pulse generatorUS5313871Mar 12, 1992May 24, 1994Pioneer Electronic CorporationHydraulic control system utilizing a plurality of branch passages with differing flow ratesUS5325063May 11, 1992Jun 28, 1994Caterpillar Inc.Linear position sensor with means to eliminate spurians harmonic detectionsUS5332938Apr 6, 1992Jul 26, 1994Regents Of The University Of CaliforniaHigh voltage MOSFET switching circuitUS5345471Apr 12, 1993Sep 6, 1994The Regents Of The University Of CaliforniaUltra-wideband receiverUS5361070Apr 12, 1993Nov 1, 1994Regents Of The University Of CaliforniaUltra-wideband radar motion sensorUS5365795May 20, 1993Nov 22, 1994Brower Jr William BImproved method for determining flow rates in venturis, orifices and flow nozzles involving total pressure and static pressure measurementsUS5422607Feb 9, 1994Jun 6, 1995The Regents Of The University Of CaliforniaLinear phase compressive filterUS5424941Aug 2, 1991Jun 13, 1995Mosier Industries, Inc.Apparatus and method for positioning a pneumatic actuatorUS5438261Feb 16, 1994Aug 1, 1995Caterpillar Inc.Inductive sensing apparatus for a hydraulic cylinderUS5438274Dec 23, 1991Aug 1, 1995CaterpillarLinear position sensor using a coaxial resonant cavityUS5455769Jun 24, 1994Oct 3, 1995Case CorporationCombine head raise and lower rate controlUS5457394May 7, 1993Oct 10, 1995The Regents Of The University Of CaliforniaImpulse radar studfinderUS5457960May 27, 1994Oct 17, 1995Kubota CorporationHydraulic control systemUS5461368Jan 11, 1994Oct 24, 1995Comtech IncorporatedAir filter monitoring device in a system using multispeed blowerUS5465094Jan 14, 1994Nov 7, 1995The Regents Of The University Of CaliforniaTwo terminal micropower radar sensorUS5469749Mar 28, 1995Nov 28, 1995Hitachi, Ltd.Multiple-function fluid measuring and transmitting apparatusUS5471147Oct 3, 1991Nov 28, 1995Caterpillar Inc.Apparatus and method for determining the linear position of a hydraulic cylinderUS5471162Sep 8, 1992Nov 28, 1995The Regents Of The University Of CaliforniaHigh speed transient samplerUS5479120May 11, 1994Dec 26, 1995The Regents Of The University Of CaliforniaHigh speed sampler and demultiplexerUS5491422Mar 14, 1995Feb 13, 1996Caterpillar Inc.Linear position sensor using a coaxial resonant cavityUS5510800Sep 6, 1994Apr 23, 1996The Regents Of The University Of CaliforniaTime-of-flight radio location systemUS5512834Sep 13, 1994Apr 30, 1996The Regents Of The University Of CaliforniaHomodyne impulse radar hidden object locatorUS5517198Aug 3, 1995May 14, 1996The Regents Of The University Of CaliforniaUltra-wideband directional samplerUS5519342May 11, 1994May 21, 1996The Regents Of The University Of CaliforniaTransient digitizer with displacement current samplersUS5519400Jun 6, 1995May 21, 1996The Regents Of The University Of CaliforniaFor detecting a characteristic of objects within a fieldUS5521600Sep 6, 1994May 28, 1996The Regents Of The University Of CaliforniaRange-gated field disturbance sensor with range-sensitivity compensationUS5523760Sep 6, 1994Jun 4, 1996The Regents Of The University Of CaliforniaUltra-wideband receiverUS5535587 *Feb 18, 1993Jul 16, 1996Hitachi Construction Machinery Co., Ltd.Hydraulic drive systemUS5536536Jun 5, 1995Jul 16, 1996Caterpillar Inc.Protectively coated position sensor, the coating, and process for coatingUS5540137Oct 11, 1994Jul 30, 1996Caterpillar Inc.Electrical contacting in electromagnetic wave piston position sensing in a hydraulic cylinderUS5563605Aug 2, 1995Oct 8, 1996The Regents Of The University Of CaliforniaPrecision digital pulse phase generatorUS5573012Aug 9, 1994Nov 12, 1996The Regents Of The University Of CaliforniaBody monitoring and imaging apparatus and methodUS5576498Nov 1, 1995Nov 19, 1996The Rosaen CompanyLaminar flow element for a flowmeterUS6269641 *Dec 29, 1999Aug 7, 2001Agip Oil Us L.L.C.Stroke control tool for subterranean well hydraulic actuator assemblyUS6286412 *Nov 22, 1999Sep 11, 2001Caterpillar Inc.Method and system for electrohydraulic valve control* Cited by examinerNon-Patent CitationsReference1"A Physicist's Desk Reference", American Institute of Physics, New York, 1992, p. 201.2"An LVDT Primer", Sensors, Jun. 1996, pp. 27-30.3"Handbook of Chemistry and Physics", CRC Press, Ohio, 1975, p. E-223.4"The Electrical Engineering Handbook", Editor-in-Chief, R. Dorf, CRC Press, 1997, pp. 811-812.5"Understanding Magnetostrictive LDTs", W.D. Peterson, Hydraulics & Pneumatics, Feb. 1993, pp. 32-34.6Brochure: DC Hydrostar, "Position Transducer".7Brochure: Penny + Giles "Technology Leaders in Displacement Monitoring & Manual Control".8Brochure: Penny + Giles Product Data, "Cylinder Transducer Model HLP100".9Brochure: Technik, "Absolute Position Measurement Using Conducive Plastic Potentiometers".10International Search Report from International Application No. PCT/US 02/15311, filed May 15, 2002. Date of report Aug. 5, 2002.11Kobold, re: RCM Industries, Inc. products, pp. 13-18.12Magazine: "Not Just a Blip on the Screen", Business Week, Feb. 19, 1996, pp. 64-65.13Model 1195 Integral Orifice Assembly, Rosemount Catalog pp. Flow-125-Flow 137 (Published 1995).14Model 8800 Smart Vortex Flowmeter, Fisher-Rosemount, Managing the Process Better, pp. 2-19, (1994).15Model 8800A Smart Vortex Flowmeter, Fisher-Rosemount, Managing the Process Better, pp. 2-21 (1997).16Model 8800A Vortex Flowmeter, Key Differentiators (undated).17Nishimoto T. et al., article entitled "Buried Piezoresistive sensors by means of MeV ion implantation", Sensors and Actuators, May 1994, vol. A43, No. 1/3, pp. 249-253.18Office Communication for Application No. 10/317,981 filed Dec. 12, 2000. Date mailed Mar. 3, 2004.19Office Communication from the USPTO for Application No. 09/521,132, filing date Mar. 8, 2000. Date Mailed Aug. 20, 2001.20Office Communication from the USPTO for Application No. 09/521,132, filing date Mar. 8, 2000. Date Mailed Aug. 27, 2002.21Office Communication from the USPTO for Application No. 09/521,132, filing date Mar. 8, 2000. Date Mailed Feb. 11, 2002.22Office Communication from the USPTO for Application No. 09/521,132, filing date Mar. 8, 2000. Date Mailed Jun. 12, 2002.23Office Communication from the USPTO for Application No. 09/521,132, filing date Mar. 8, 2000. Date Mailed May 1, 2003.24Office Communication from the USPTO for Application No. 09/801,259, filing date Mar. 7, 2001. Date Mailed Jul. 19, 2002.25Office Communication from the USPTO for Application No. 09/801,259, filing date Mar. 7, 2001. Date Mailed Mar. 28, 2003.26Office Communication from the USPTO for Application No. 09/801,266, filing date Mar. 7, 2001. Date Mailed Feb. 11, 2002.27Office Communication from the USPTO for Application No. 09/801,266, filing date Mar. 7, 2001. Date Mailed Feb. 26, 2003.28Office Communication from the USPTO for Application No. 09/801,266, filing date Mar. 7, 2001. Date Mailed Jul. 9, 2002.29On-Line Catalog Level and Flow Instrumentation-Flow Gauges, Industrial Process Measurement, Inc., re: RCM Industries, Inc. products, 6 pages.30On-Line Catalog Level and Flow Instrumentation�Flow Gauges, Industrial Process Measurement, Inc., re: RCM Industries, Inc. products, 6 pages.31Process Instrument Engineers Handbook, Revised Edition, Chapters 2.10, 2.11, and 2.12, pp. 87-110 (1982).32U.S. patent application No. 09/521,132, entitled "Piston Position Measuring Device," Filed Mar. 8, 2000.33U.S. patent application No. 90/521,537, entitled "Bi-Directional Differential Pressure Flow Sensor," filed Mar. 8, 2000.34U.S. patent application Ser. No. 09/394,728, Kleven, filed Sep. 13, 1999.35U.S. patent application Ser. No. 09/395,688, Kleven, filed Sep. 13, 1999.36U.S. Provisional Application No. 60/187,849, entitled "System for Controlling Multiple Hydraulic Cylinders," filed Mar. 8, 2000.37U.S. Provisional Application No. 60/218,329, entitled "Hydraulic Valve Body with Differential Pressure Flow Measurement," filed Jul. 14, 2000.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS7296312 *Sep 8, 2003Nov 20, 2007Hill-Rom Services, Inc.Hospital bedUS7925386 *Dec 13, 2007Apr 12, 2011Abb AgControl device for a pneumatically operated actuatorUS8459174 *Oct 16, 2007Jun 11, 2013Eliezer ZeichnerRod-less cylinder device and system and method for operating thereofUS20090309050 *Jun 11, 2009Dec 17, 2009Abb Technology AgElectropneumatic valveUS20100083823 *Oct 16, 2007Apr 8, 2010Eliezer ZeichnerRod-less cylinder device and system and method for operating thereof* Cited by examinerClassifications U.S. Classification91/363.00RInternational ClassificationF15B15/28Cooperative ClassificationF15B15/2838European ClassificationF15B15/28C10Legal EventsDateCodeEventDescriptionDec 22, 2011FPAYFee paymentYear of fee payment: 8Sep 26, 2007FPAYFee paymentYear of fee payment: 4Dec 12, 2002ASAssignmentOwner name: ROSEMOUNT INC., MINNESOTAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHUMACHER, MARK S.;KROUTH, TERRANCE F.;WIKLUND, DAVID E.;REEL/FRAME:013580/0510;SIGNING DATES FROM 20021022 TO 20021111Owner name: ROSEMOUNT INC. 12001 TECHNOLOGY DRIVEEDEN PRAIRIE,Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHUMACHER, MARK S. /AR;REEL/FRAME:013580/0510;SIGNING DATES FROM 20021022 TO 20021111RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google