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Method and apparatus for sensing piston position using a dipstick assembly

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • F01B-031/12
출원번호 US-0758092 (1996-11-27)
발명자 / 주소
  • Chan Danley C.
  • Berger Alan D.
출원인 / 주소
  • Case Corporation
대리인 / 주소
    Foley & Lardner
인용정보 피인용 횟수 : 27  인용 특허 : 58

초록

A system for determining the position of a piston moveable within a cylinder, or of an implement or joint, is disclosed herein. Electromagnetic (EM) bursts such as ultra-wideband or frequency pulses are generated and applied to a transmitter/receiver unit. The EM bursts are launched by the transmitt

대표청구항

[ What is claimed is:] [1.] A method of determining the position of a piston moveable within a cylinder housing, the cylinder housing having a first end, a second end and a side wall between the first and the second ends, comprising the steps of:generating uncompensated electromagnetic (EM) bursts;l

이 특허에 인용된 특허 (58)

  1. Allen William E. (Peoria IL) Bitar Ali A. (Peoria IL) Herold Robert A. (Peoria Heights IL), Apparatus and method for determining the linear position of a hydraulic cylinder.
  2. Brewer Lloyd A. (Wausau) Skeel James C. (Wausau) Seidel William R. (Racine WI), Automatic return to travel.
  3. McEwan Thomas E. (Livermore CA), Body monitoring and imaging apparatus and method.
  4. Panoushek Dale W. (Orion IL) Milender Jeffrey S. (Valley City ND), Combine head raise and lower rate control.
  5. Lark Wayne W. (Joliet IL) Morgan Denny (San Diego CA) Turba James R. (Joliet IL), Electrical contacting in electromagnetic wave piston position sensing in a hydraulic cylinder.
  6. McEwan Thomas E. (Livermore CA), Electronic multi-purpose material level sensor.
  7. Hitchcock Keith N. (Worcester GB2), Engine testing apparatus and methods.
  8. McEwan Thomas E. (Livermore CA), High speed sampler and demultiplexer.
  9. McEwan Thomas E. (Livermore CA), High speed transient sampler.
  10. McEwan Thomas E. (Livermore CA), High voltage MOSFET switching circuit.
  11. McEwan Thomas E. (Livermore CA), Homodyne impulse radar hidden object locator.
  12. Krage Mark K. (Royal Oak MI), Hydraulic actuator having a microwave antenna.
  13. Greer Robert D. (Peoria IL), Hydraulic cylinder position sensor mounting apparatus.
  14. McEwan Thomas E. (Livermore CA), Impulse radar studfinder.
  15. Goldberg Jack (San Diego CA) Zublin Kurt E. (Poway CA) Bell Marl J. (Valley Center CA), In-line fluid monitor system and method.
  16. Codina George (North Hollywood CA) Baker Thomas M. (Peoria IL) Creger Lisa A. (Metamora IL) Vachon J. Thomas (Peoria IL), Inductive sensing apparatus for a hydraulic cylinder.
  17. Habib Joseph (Jackson MI) Nielsen Paul (Marcus Hook PA) Nielsen Paul H. (Wilmington DE), Linear capacitance displacement transducer.
  18. McEwan Thomas E. (Livermore CA), Linear phase compressive filter.
  19. Wiblin Wayne T. (Ashtabula OH) Surma Ronald D. (Madison OH) Melocik Grant C. (Chardon OH), Linear position encoder.
  20. Bitar Ali (Peoria IL) Gudat Adam J. (Edelstein IL) Huggins Brian D. (Peoria IL) Jacobson Wesley E. (Peoria Heights IL) Szentes John F. (Peoria IL), Linear position sensor using a coaxial resonant cavity.
  21. Bitar Ali A. (Peoria IL) Bowman Charles W. (Escondido CA) Morgan Denny E. (San Diego CA), Linear position sensor using a coaxial resonant cavity.
  22. Bitar Ali A. (Peoria IL) Morgan Denny E. (San Diego CA) Bowman Charles W. (Escondido CA), Linear position sensor using a coaxial resonant cavity.
  23. Morgan Denny E. (San Diego CA), Linear position sensor with equalizing means.
  24. Morgan Denny E. (San Diego CA), Linear position sensor with means to eliminate spurians harmonic detections.
  25. Taplin Lael B. (Union Lake MI) Sagady Calman S. (West Bloomfield MI), Location of piston position using radio frequency waves.
  26. Schuetz John L. (Hiawatha KS), Magnetostrictive linear displacement transducer with temperature compensation.
  27. Knetsch Manfred (Stuttgart DEX) Khne Wolfgang (Stuttgart DEX), Method and apparatus for using spring-type resistive elements in a measurement bridge circuit.
  28. Haddox Mark L. (Ann Arbor MI), Method and system for monitoring position of a fluid actuator employing microwave resonant cavity principles.
  29. Taplin Lael B. (Union Lake MI), Microwave antenna and dielectric property change frequency compensation system in electrohydraulic servo with piston pos.
  30. Krage Mark K. (Royal Oak MI), Microwave piston position location.
  31. Bitar Ali A. (Peoria IL), Multiplexed radio frequency linear position sensor system.
  32. McEwan Thomas E. (Livermore CA), Narrow field electromagnetic sensor system and method.
  33. Wlodarczyk Marek T. (Birmingham MI) Tang Dah-Lain (Canton MI), Optical shaft position and speed sensor.
  34. McEwan Thomas E. (Livermore CA), Phase coded, micro-power impulse radar motion sensor.
  35. Riemer Dietrich E. (Auburn WA), Position sensing system with magnetic coupling.
  36. Nilius Hans-Joachim (Seligenstadt DEX), Position sensor for generating a voltage changing proportionally to the position of a magnet.
  37. Taplin Lael B. (Union Lake MI), Power transmission.
  38. McEwan Thomas E. (Livermore CA), Precision digital pulse phase generator.
  39. Kelley Kurtis C. (Washington IL), Protectively coated position sensor, the coating, and process for coating.
  40. Bitar Ali A. (Peoria IL), Radio frequency linear position sensor using two subsequent harmonics.
  41. McEwan Thomas E. (Livermore CA), Range gated strip proximity sensor.
  42. McEwan Thomas E. (Livermore CA), Range-gated field disturbance sensor with range-sensitivity compensation.
  43. Huang Zhen (Wuppertal DEX) Gesenhues Ludger (Witten DEX) Hoffmann Hans-Jrgen (Wuppertal DEX) Schmidt Klaus (Bergisch Gladbach DEX) Hlscher Reinhard (Salzkotten DEX) Krner Thomas (Ennepetal DEX), Sensor for measuring the speed and/or position of a piston in relation to that of the cylinder it moves inside of in a d.
  44. Bethell Michael R. (Monroe MI), Shock absorber with sonar position sensor.
  45. McEwan Thomas E. (Livermore CA), Short range radio locator system.
  46. Lark Wayne W. (Joliet IL) Morgan Denny (San Diego CA) Turba James R. (Joliet IL), Signal improvement in the sensing of hydraulic cylinder piston position using electromagnetic waves.
  47. Sethares ; James C. ; Frost ; Harold M., Surface acoustic wave rate sensor and position indicator.
  48. Head, Kenneth O.; Bollinger, Arthur E., System for ultrasonically detecting the relative position of a moveable device.
  49. McEwan Thomas E. (Livermore CA), Time-of-flight radio location system.
  50. McEwan Thomas E. (Livermore CA), Transient digitizer with displacement current samplers.
  51. Hagstrom David (Endwell NY), Trim tab indicator system.
  52. McEwan Thomas E. (Livermore CA), Two terminal micropower radar sensor.
  53. McEwan Thomas E. (Livermore CA), Ultra-short pulse generator.
  54. McEwan Thomas E. (Livermore CA), Ultra-wideband directional sampler.
  55. McEwan Thomas E. (Livermore CA), Ultra-wideband radar motion sensor.
  56. McEwan Thomas E. (Livermore CA), Ultra-wideband receiver.
  57. McEwan Thomas E. (Livermore CA), Ultra-wideband receiver.
  58. Dye G. Frank (Greensboro NC) McSpadden John S. (Greensboro NC), Ultrasonic linear meter sensor for positive displacement meter.

이 특허를 인용한 특허 (27)

  1. Wiklund, David E.; Krouth, Terrance F.; Broden, David A.; Schumacher, Mark S., Bi-directional differential pressure flow sensor.
  2. Krouth, Terrance F.; Wiklund, David E.; Habegger, Richard J.; Hineman, Richard R., Hydraulic actuator piston measurement apparatus and method.
  3. Brown, Gregory C., Hydraulic piston position sensor.
  4. Brown, Gregory C.; Richter, Brian E., Hydraulic piston position sensor.
  5. Brown, Gregory C.; Johnson, James A.; Lovegren, Eric R., Hydraulic piston position sensor signal processing.
  6. Collins, Duane Zedric; Galindo, Gaspar, Method for calibrating hydraulic actuators.
  7. Lutz Dieter,DEX ; Thoma Achim,DEX, Piston cylinder unit with a movement determination device.
  8. Wiklund, David E.; Krouth, Terrance F.; Habegger, Richard J.; Hineman, Richard R., Piston position measuring device.
  9. de Maglie, Rodolphe; Engler, Alfred; Cremer, Ralf; Lavergne, Hans-Peter, Piston-cylinder unit with device for determining position.
  10. Dropmann, Markus; Engler, Alfred, Piston-cylinder unit with evaluation unit for determining the piston position.
  11. Engler, Alfred; Mahdavi, Nejat; Thuerigen, Christian, Position measuring device for a fluidic cylinder.
  12. Conti, Piero Antonio; Greco, Giordano; Nepote, Andrea; Inglese, Francesco; Milazzo, Mario; Stefanini, Cesare, Regenerative hydraulic shock-absorber for vehicle suspension.
  13. Calabrese, Ronald V., Self-calibrating liquid level transmitter.
  14. Calabrese,Ronald V., Self-calibrating liquid level transmitter.
  15. Calabrese,Ronald V., Self-calibrating liquid level transmitter.
  16. Hoffberg, Steven M., Steerable rotating projectile.
  17. Geiger, David; Scheffler, Raymond S., Subsea actuation system.
  18. Richards James L. ; Fullerton Larry W. ; Meigs David C. ; Stanley Randall S. ; Cowie Ivan A., System and method for distance measurement by inphase and quadrature signals in a radio system.
  19. Taylor,Elise H.; Finn,James S., System and method for information assimilation and functionality control based on positioning information obtained by impulse radio means.
  20. Taylor, Elise H.; Finn, James S., System and method for information assimilation and functionality control based on positioning information obtained by impulse radio techniques.
  21. Richards James L. ; Kelly Donald A. ; Finn James S. ; Meigs David C. ; Welch ; Jr. William D., System and method for person or object position location utilizing impulse radio.
  22. Fullerton Larry W. ; Richards James L. ; Cowie Ivan A., System and method for position determination by impulse radio.
  23. Fullerton, Larry W.; Richards, James L.; Cowie, Ivan A., System and method for position determination by impulse radio using round trip time-of-flight.
  24. Carter, Roy Anthony; Booth, John Robert; Isler, III, John, System and method for providing redundant power to a device.
  25. Isler, III, John; Booth, John Robert; Carter, Roy Anthony, System and method for providing redundant power to a device.
  26. Schumacher, Mark S.; Krouth, Terrance F.; Wiklund, David E.; Habegger, Richard J.; Hineman, Richard R., System for controlling hydraulic actuator.
  27. Geiger, David, Two-stage submersible actuators.
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