EP0018832A3 - Improvements in or relating to positioners - Google Patents

Improvements in or relating to positioners Download PDF

Info

Publication number
EP0018832A3
EP0018832A3 EP80301433A EP80301433A EP0018832A3 EP 0018832 A3 EP0018832 A3 EP 0018832A3 EP 80301433 A EP80301433 A EP 80301433A EP 80301433 A EP80301433 A EP 80301433A EP 0018832 A3 EP0018832 A3 EP 0018832A3
Authority
EP
European Patent Office
Prior art keywords
lever
pneumatic valve
positioners
relating
location
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.)
Withdrawn
Application number
EP80301433A
Other languages
German (de)
French (fr)
Other versions
EP0018832A2 (en
Inventor
Richard John Gough
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.)
Danks Holding Ltd
Original Assignee
Babcock Bristol Ltd
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 Babcock Bristol Ltd filed Critical Babcock Bristol Ltd
Publication of EP0018832A2 publication Critical patent/EP0018832A2/en
Publication of EP0018832A3 publication Critical patent/EP0018832A3/en
Withdrawn legal-status Critical Current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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/16—Special measures for feedback, e.g. by a follow-up device

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanically-Actuated Valves (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Power Steering Mechanism (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)

Abstract

The invention provides a positioner by which a member (1), which may be massive and, for instance, a part of a valve, may be moved to a pre-determined position. The movement of the member (1) is controlled by a pneumatic valve (2) that is connected to a lever (14). The lever (14) is pivoted at two locations (13a and 20) which can both be moved transversely to the lever (14). By moving the first location (13a) the pneumatic valve (2) is open to move the member (1) and movement of the member (1) moves the second location (20) to tilt the lever 14 back to a position in which the pneumatic valve (2) is again closed.
EP80301433A 1979-05-04 1980-05-01 Improvements in or relating to positioners Withdrawn EP0018832A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7915693 1979-05-04
GB7915693 1979-05-04

Publications (2)

Publication Number Publication Date
EP0018832A2 EP0018832A2 (en) 1980-11-12
EP0018832A3 true EP0018832A3 (en) 1981-05-13

Family

ID=10504978

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80301433A Withdrawn EP0018832A3 (en) 1979-05-04 1980-05-01 Improvements in or relating to positioners

Country Status (3)

Country Link
EP (1) EP0018832A3 (en)
DK (1) DK191580A (en)
NO (1) NO801268L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142269A1 (en) * 1991-12-20 1993-06-24 Sensycon Ind Sensorsyst DEVICE FOR CONVERTING AN ELECTRICAL CURRENT SIGNAL INTO A MECHANICAL SET SIZE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570624A (en) * 1946-11-19 1951-10-09 Gulf Research Development Co Follow-up pneumatic servomotor
US2781744A (en) * 1954-09-02 1957-02-19 Hogan Corp Pneumatic signal responsive hydraulically actuated positioners for high pressure servo-valves provided with a compensating or followup mechanism
US3899956A (en) * 1973-11-05 1975-08-19 Olsen Controls Inc Linear electrohydraulic pulse drive actuator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570624A (en) * 1946-11-19 1951-10-09 Gulf Research Development Co Follow-up pneumatic servomotor
US2781744A (en) * 1954-09-02 1957-02-19 Hogan Corp Pneumatic signal responsive hydraulically actuated positioners for high pressure servo-valves provided with a compensating or followup mechanism
US3899956A (en) * 1973-11-05 1975-08-19 Olsen Controls Inc Linear electrohydraulic pulse drive actuator

Also Published As

Publication number Publication date
DK191580A (en) 1980-11-05
EP0018832A2 (en) 1980-11-12
NO801268L (en) 1980-11-05

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): BE GB IT NL SE

PUAL Search report despatched

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18W Application withdrawn

Withdrawal date: 19810922

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GOUGH, RICHARD JOHN