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Magnetostrictive linear displacement transducer with temperature compensation 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01B-007/14
  • G01B-017/00
  • F01B-031/12
  • H04B-011/00
출원번호 US-0719484 (1991-06-24)
발명자 / 주소
  • Schuetz John L. (Hiawatha KS)
출원인 / 주소
  • Schuetz Tool & Die, Inc. (Hiawatha KS 02)
인용정보 피인용 횟수 : 45  인용 특허 : 0

초록

A method and apparatus for correcting thermally induced errors in the operation of a magnetostrictive linear displacement transducer used to monitor the piston position in a hydraulic cylinder. The transducer includes a processing head on one end of the cylinder, a waveguide extending from the proce

대표청구항

In a magnetostrictive linear displacement transducer having an elongated waveguide, a processing head for applying electrical signals to the waveguide, and a magnet which moves with a piston and which produces a magnetic field with which the electrical signals interact to produce ultrasonic signals

이 특허를 인용한 특허 (45)

  1. Wiklund, David E.; Krouth, Terrance F.; Broden, David A.; Schumacher, Mark S., Bi-directional differential pressure flow sensor.
  2. Landrith, II, James Ray; Brown, Roger Dale; Buelow, Jonathan Lewis; Liotta, Joseph James; Ensley, Eric Trevor; Johnson, Christopher Dale, Blowout preventer monitor with trigger sensor and method of using same.
  3. Liotta, Joseph James; Ensley, Eric Trevor; Johnson, Christopher Dale, Blowout preventer monitoring system and method of using same.
  4. Liotta, Joseph James; Ensley, Eric Trevor; Johnson, Christopher Dale, Blowout preventer monitoring system and method of using same.
  5. Weir, James, Blowout preventer with ram socketing.
  6. Palmer, Christopher L.; Mellott, Lex A., Cylinder length sensor mounting/retaining assembly.
  7. Schmidt, Jörg, Device for measuring the displacement travel of a hydraulic displacement mechanism.
  8. Trummer,G��nther, Distance measuring device and method for determining a distance.
  9. Teale, David; Akinyode, Akinjide; Freeman, Joe, Downhole closed-loop magnetostrictive sensing element for downhole applications.
  10. Blubaugh, James F.; Dietz, Hans P.; Lark, Wayne W.; McIntyre, David J.; Skinner, Thomas G.; Wiltz, Sean P., Fluid cylinder with embedded positioning sensor.
  11. Kobayashi, Toshio, Fluid pressure cylinder.
  12. Krouth, Terrance F.; Wiklund, David E.; Habegger, Richard J.; Hineman, Richard R., Hydraulic actuator piston measurement apparatus and method.
  13. Alrefai,Mahd H., Hydraulic cylinder having a snubbing valve.
  14. Don S. Samuelson ; James D. Homan ; Stephen B. Jones, Hydraulic cylinder monitoring apparatus.
  15. Brown, Gregory C., Hydraulic piston position sensor.
  16. Brown, Gregory C.; Richter, Brian E., Hydraulic piston position sensor.
  17. Brown, Gregory C.; Johnson, James A.; Lovegren, Eric R., Hydraulic piston position sensor signal processing.
  18. Typinski, Ronald P.; Que, Dennis R.; Abramczyk, Scott J., Internal position sensor.
  19. Nagai Katsumi,JPX ; Ogawa Takaki,JPX ; Naruse Yasuhiko,JPX, Lift cylinder and mast assembly of forklift.
  20. Carlen, Eric T.; Roberson, David G.; Bui, Hiep T., Linear position transducer with wireless read head.
  21. Nyce David S. ; Smith Stephen W. ; Sprecher ; Jr. Arnold F. ; Togneri Mauro G. ; Tola ; Jr. Peter T., Magnetostrictive linear displacement transducer for a shock absorber.
  22. Castriotta, Sascha Antonio; Franks, Bradford Shane, Method and apparatus for sealing a wellbore.
  23. Chan Danley C. ; Berger Alan D., Method and apparatus for sensing piston position.
  24. Chan Danley C. ; Berger Alan D., Method and apparatus for sensing piston position using a dipstick assembly.
  25. Chan Danley C. ; Berger Alan D., Method and apparatus for sensing the orientation of a mechanical actuator.
  26. Albright,Larry E.; Bares,Mark F.; Shelbourn,William C.; Mason,Scott R., Method and apparatus for stroke position sensor for hydraulic cylinder.
  27. David Allen Topmiller, Method and apparatus for synthesizing an incremental signal.
  28. Ensley, Eric Trevor; Springett, Frank Benjamin; Weir, James William, Method and system for sealing a wellbore.
  29. Evans ; Jr. Charles F. ; Wnorowski Edwin P. ; Fowler Robert R. ; Pate Brian P., Molded piston.
  30. Spiegl,Bernhard; Steinr체ck,Peter; Murhammer,J체rgen, Monitor to check the path of motion of reciprocating piston.
  31. Sullivan Jeffrey J. ; Crofts John D., Piezoelectric actuator and valve assembly with thermal expansion compensation.
  32. Wiklund, David E.; Krouth, Terrance F.; Habegger, Richard J.; Hineman, Richard R., Piston position measuring device.
  33. Natali, Gianfranco, Pneumatic actuator.
  34. Nagai, Katsumi, Position detecting device for hydraulic cylinder, and detecting method thereof.
  35. Young, Kenneth D.; Colvin, Kenneth W.; Frederick, Joseph L., Position instrumented blowout preventer.
  36. Blubaugh,James F.; Hamasagar,Arun M.; McIntyre,David J.; Skinner,Thomas G.; Wiltz,Sean P., Position sensing cylinder cap for ease of service and assembly.
  37. Zilioli, Eduardo, Position sensor for oil-operated piston/cylinder units.
  38. Topmiller, David Allen, Programmed method and apparatus for quadrature output sensors.
  39. Topmiller,David Allen, Programmed method and apparatus for quadrature output sensors.
  40. Judge, Robert Arnold, RAM BOP position sensor.
  41. William E. Janssens ; Thomas J. Cusumano ; Tarek El-Sawaf ; Michael Zona ; Louis Ariosto, Servo-pneumatic modular weld gun.
  42. Weir, James William; Springett, Frank Benjamin; Ensley, Eric Trevor, System and method for sealing a wellbore.
  43. Schumacher, Mark S.; Krouth, Terrance F.; Wiklund, David E.; Habegger, Richard J.; Hineman, Richard R., System for controlling hydraulic actuator.
  44. Pattee, Jack; Zhukov, Mikhail Serafimovich, Systems and methods for magnetostrictive sensing.
  45. David S. Nyce ; Arnold F. Sprecher, Jr. ; Stephen W. Smith ; Mauro G. Togneri ; Peter T. Tola, Jr., Vehicle suspension strut having a continuous position sensor.
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