GB554070A - Improvements in and relating to fluid-operated control mechanism - Google Patents

Improvements in and relating to fluid-operated control mechanism

Info

Publication number
GB554070A
GB554070A GB10427/41A GB1042741A GB554070A GB 554070 A GB554070 A GB 554070A GB 10427/41 A GB10427/41 A GB 10427/41A GB 1042741 A GB1042741 A GB 1042741A GB 554070 A GB554070 A GB 554070A
Authority
GB
United Kingdom
Prior art keywords
piston
valve
pressure
operating
ports
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.)
Expired
Application number
GB10427/41A
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.)
Brassert & Co
Original Assignee
Brassert & 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 Brassert & Co filed Critical Brassert & Co
Priority to GB10427/41A priority Critical patent/GB554070A/en
Publication of GB554070A publication Critical patent/GB554070A/en
Expired 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/355—Pilot pressure control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/765—Control of position or angle of the output member
    • F15B2211/7656—Control of position or angle of the output member with continuous position control

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)

Abstract

554,070. Fluid-pressure servomotor-control systems. BRASSERT & CO., Ltd., H. A., and NISSIM, R. Sept. 15, 1941, No. 10427. [Class 135] Apparatus for controlling a physical value comprises a differential piston and cylinder, means for supplying pressure fluid on each side of the piston and an escape valve for varying the pressure on one side of the piston in accordance with changes in the physical value. Preferably, the movement of the piston controls a power cylinder. In the form shown in Fig. 1, flow variation in a conduit 30 acts through an orifice plate 32, diaphragm 33, lever 34 and escape valve 35 to vary the pressure in the space on top of the differential piston 38. The piston is therefore moved so that relay valve members carried thereby alter the supply of pressure fluid from the space beneath the piston to the power cylinder 50 for operating the control valve 45, and the exhaust from the power cylinder. The valve members consist of rings 51, 52 provided with ports 47P, 47E and separated by a space C communicating with drain. In other forms, the escape valve may consist of a needle valve 35A, Fig. 3, co-operating with a port in the piston, and the latter may be formed so that the pressure within it is completely balanced. In a modification of any of the above-mentioned forms, two ports 47P, 47E are replaced by a single port 47P as shown in Fig. 4A, co-operating with adjacent ports 48P, 48E. When applied to the form shown in Fig. 3, the cross-section of the single port is equal to the sum of that of the adjacent ports. In a further form, an angularly adjustable escape valve 35C, Fig. 5, has longitudinal slots 73 co-operating with longitudinal slots 72 in the piston 38, and the chamber 64 communicates with a distant auxiliary cylinder 39A having a piston 38A which may control a power piston. Specification 438,020, [Group XXVI], is referred to.
GB10427/41A 1941-09-15 1941-09-15 Improvements in and relating to fluid-operated control mechanism Expired GB554070A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB10427/41A GB554070A (en) 1941-09-15 1941-09-15 Improvements in and relating to fluid-operated control mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10427/41A GB554070A (en) 1941-09-15 1941-09-15 Improvements in and relating to fluid-operated control mechanism

Publications (1)

Publication Number Publication Date
GB554070A true GB554070A (en) 1943-06-18

Family

ID=9967607

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10427/41A Expired GB554070A (en) 1941-09-15 1941-09-15 Improvements in and relating to fluid-operated control mechanism

Country Status (1)

Country Link
GB (1) GB554070A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696979A (en) * 1951-04-16 1954-12-14 Kennecott Copper Corp Automatic tuyere punching apparatus
US2972999A (en) * 1955-11-01 1961-02-28 Sanders Associates Inc Two-stage, differential, hydraulic servo valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696979A (en) * 1951-04-16 1954-12-14 Kennecott Copper Corp Automatic tuyere punching apparatus
US2972999A (en) * 1955-11-01 1961-02-28 Sanders Associates Inc Two-stage, differential, hydraulic servo valve

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