GB860933A - Improvements in or relating to hydraulic valves and hydraulic servo-systems - Google Patents

Improvements in or relating to hydraulic valves and hydraulic servo-systems

Info

Publication number
GB860933A
GB860933A GB35517/58A GB3551758A GB860933A GB 860933 A GB860933 A GB 860933A GB 35517/58 A GB35517/58 A GB 35517/58A GB 3551758 A GB3551758 A GB 3551758A GB 860933 A GB860933 A GB 860933A
Authority
GB
United Kingdom
Prior art keywords
valve
piston
rod
ball
movement
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
GB35517/58A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB860933A publication Critical patent/GB860933A/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
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/02—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type
    • F15B9/08—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
    • F15B9/10—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which the controlling element and the servomotor each controls a separate member, these members influencing different fluid passages or the same passage

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

860,933. Fluid-pressure servomotor-control systems. LEDUC, R. Nov. 5, 1958 [Nov. 5, 1957], No. 35517/58. Class 135. An hydraulic servo-control valve comprises a main valve 1 spring-urged to close, a doubleacting hydraulic valve actuator, e.g. piston 5, having damping means formed by a calibrated leak-path from inlet I between the piston, and its cylinder to chamber 12 and on unsprung pilot ball valve 10 push-operated at 3 for controlling a piston passage 8 leading to the valve outlet displacement of valve 1, as a result of unseating ball 10, tending to reseat the ball. Movement of rod 17 and cam 4 to the right opens ball 10 of valve 20 and allows inlet pressure at I to open valve 20 and follow up the movement of the ball so that inlet pressure acts at 18 on the large area of the differential piston 7 and moves it to the right. Cam 4a on rod 17 moves away from the push rod of valve 20a to keep it closed. According to Specification 654,415 referred to, rod 17 is moved manually and piston 7 operates aircraft surfaces. Movement of rod 17 to the left enables cam 4a to open valve 20a via its ball 10 and keep valve 20 closed so that inlet pressure acts at 19 on the small area of the piston and the large area is open to exhaust at E via a passage around the cams and between the valves 20, 20a, through open valve 20a and around the righthand end of the piston. Movement of the piston with respect to rod 17 recloses either of valves 20, 20a so that the piston occupies a distinct position for every position of rod 17. The cams on rod 17 may be linear or curved.
GB35517/58A 1957-11-05 1958-11-05 Improvements in or relating to hydraulic valves and hydraulic servo-systems Expired GB860933A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR860933X 1957-11-05

Publications (1)

Publication Number Publication Date
GB860933A true GB860933A (en) 1961-02-15

Family

ID=9336784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35517/58A Expired GB860933A (en) 1957-11-05 1958-11-05 Improvements in or relating to hydraulic valves and hydraulic servo-systems

Country Status (1)

Country Link
GB (1) GB860933A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110501A1 (en) * 1982-11-19 1984-06-13 Pneumo Abex Corporation Redundant control actuation system-concentric direct drive valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110501A1 (en) * 1982-11-19 1984-06-13 Pneumo Abex Corporation Redundant control actuation system-concentric direct drive valve
US4472998A (en) * 1982-11-19 1984-09-25 Pneumo Corporation Redundant control actuation system-concentric direct drive valve

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