AU549902B2 - Position sensing cylinder - Google Patents

Position sensing cylinder

Info

Publication number
AU549902B2
AU549902B2 AU87458/82A AU8745882A AU549902B2 AU 549902 B2 AU549902 B2 AU 549902B2 AU 87458/82 A AU87458/82 A AU 87458/82A AU 8745882 A AU8745882 A AU 8745882A AU 549902 B2 AU549902 B2 AU 549902B2
Authority
AU
Australia
Prior art keywords
bar
wiper
bore
piston
shaped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU87458/82A
Other versions
AU8745882A (en
Inventor
Ronnie Franklin Burk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
Original Assignee
Deere and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of AU8745882A publication Critical patent/AU8745882A/en
Application granted granted Critical
Publication of AU549902B2 publication Critical patent/AU549902B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • F15B15/2853—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using potentiometers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Vehicle Body Suspensions (AREA)
  • Characterised By The Charging Evacuation (AREA)
  • Looms (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Reciprocating Pumps (AREA)
  • Valve Device For Special Equipments (AREA)
  • Body Structure For Vehicles (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

A piston (16) and rod (18) slide in a double acting cylinder with closed end (12) from which extends a bar (60) having a T-shaped cross-section with a cross piece (64) and stiffening web (66), the edges of which are rounded to engage and slide on the wall of a bore (22) in the piston rod (18), thus supporting the bar in a rigid manner. The face (68) of the cross piece (64) supports a potentiometer track which co-operates with a wiper (118) carried by an insulating carrier (110) fitted into the bore (22). The T-shaped bar (60) partitions the bore (22) into three chambers (65, 67, 69) which are in communication at the distal end of the bar. The carrier (110) is shaped to close the chamber (65) containing the wiper so that there is no fluid flow past the wiper as the piston (16) moves.
AU87458/82A 1981-09-08 1982-08-20 Position sensing cylinder Ceased AU549902B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30033181A 1981-09-08 1981-09-08
US300331 1981-09-08

Publications (2)

Publication Number Publication Date
AU8745882A AU8745882A (en) 1983-03-17
AU549902B2 true AU549902B2 (en) 1986-02-20

Family

ID=23158660

Family Applications (1)

Application Number Title Priority Date Filing Date
AU87458/82A Ceased AU549902B2 (en) 1981-09-08 1982-08-20 Position sensing cylinder

Country Status (11)

Country Link
EP (1) EP0074266B1 (en)
JP (1) JPS5854208A (en)
AT (1) ATE18286T1 (en)
AU (1) AU549902B2 (en)
BR (1) BR8205185A (en)
CA (1) CA1180916A (en)
DE (2) DE3269407D1 (en)
DK (1) DK400982A (en)
ES (1) ES8402054A1 (en)
MX (1) MX154307A (en)
ZA (1) ZA826527B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE436072B (en) * 1983-03-22 1984-11-05 Hara Ab POTENTIOMETER DEVICE FOR DETERMINATION OF PHYSICAL HYDRAULIC PISTONS AND SIMILAR
DE3744254A1 (en) * 1987-12-24 1989-07-13 Integral Hydraulik Co Linear potentiometer which is operated under oil
US6725761B1 (en) 2002-09-30 2004-04-27 Prince Manufacturing Corporation Spooling device assembly for hydraulic cylinder and method of assembling same
US8100045B2 (en) 2008-10-21 2012-01-24 Clark Equipment Company Hydraulic cylinder rod position sensor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175094A (en) * 1962-05-24 1965-03-23 Guerin Engineering Inc Electrohydraulic actuator
FR1382342A (en) * 1963-11-09 1964-12-18 Mitchell Hydraulics Ltd Improvements to mechanical control devices actuated by pressurized fluid
US3412391A (en) * 1964-10-31 1968-11-19 Gullick Ltd Pressure-fluid-operated devices and means for indicating the condition thereof
US3726191A (en) * 1971-02-08 1973-04-10 Bunker Ramo Electrically controlled hydraulic system and transducer therefor

Also Published As

Publication number Publication date
ES515508A0 (en) 1984-01-01
DE74266T1 (en) 1983-08-04
EP0074266B1 (en) 1986-02-26
MX154307A (en) 1987-06-30
DE3269407D1 (en) 1986-04-03
DK400982A (en) 1983-03-09
ZA826527B (en) 1984-04-25
ES8402054A1 (en) 1984-01-01
BR8205185A (en) 1983-08-16
JPS5854208A (en) 1983-03-31
AU8745882A (en) 1983-03-17
CA1180916A (en) 1985-01-15
ATE18286T1 (en) 1986-03-15
JPH0233883B2 (en) 1990-07-31
EP0074266A1 (en) 1983-03-16

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