FR2433663A1 - Dispositif de commande de fluide a mecanisme de commande de debit variable individuellement pour chaque section de commande - Google Patents

Dispositif de commande de fluide a mecanisme de commande de debit variable individuellement pour chaque section de commande

Info

Publication number
FR2433663A1
FR2433663A1 FR7919360A FR7919360A FR2433663A1 FR 2433663 A1 FR2433663 A1 FR 2433663A1 FR 7919360 A FR7919360 A FR 7919360A FR 7919360 A FR7919360 A FR 7919360A FR 2433663 A1 FR2433663 A1 FR 2433663A1
Authority
FR
France
Prior art keywords
control
section
fluid
variable flow
control valve
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.)
Granted
Application number
FR7919360A
Other languages
English (en)
Other versions
FR2433663B1 (fr
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.)
Borg Warner Corp
Original Assignee
Borg Warner Corp
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 Borg Warner Corp filed Critical Borg Warner Corp
Publication of FR2433663A1 publication Critical patent/FR2433663A1/fr
Application granted granted Critical
Publication of FR2433663B1 publication Critical patent/FR2433663B1/fr
Granted 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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
    • 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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/163—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for sharing the pump output equally amongst users or groups of users, e.g. using anti-saturation, pressure compensation
    • 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
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
    • F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/3053—In combination with a pressure compensating valve
    • F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • 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
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3138—Directional control characterised by the positions of the valve element the positions being discrete
    • 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
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/351—Flow control by regulating means in feed line, i.e. meter-in 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
    • F15B2211/30—Directional control
    • F15B2211/365—Directional control combined with flow control and 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a 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
    • F15B2211/50—Pressure control
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief 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
    • F15B2211/50—Pressure control
    • F15B2211/57—Control of a differential 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle valves
    • 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Multiple-Way Valves (AREA)

Abstract

Dispositif de commande de fluide à mécanisme de commande de débit variable individuellement pour chaque section de commande. Le dispositif comprend un ensemble à valve de commande bidirectionnelle utilisé dans une configuration à centre ouvert ou à centre fermé Il peut incorporer une ou plusieurs sections de commande, chacune comportant une valve de commande manuelle et son propre mécanisme de commande de débit. Chaque mécanisme 44 est sensible de façon indépendante à la pression de charge de la section, et peut commander le débit dans sa section lorsque la bobine de la valve de commande est sollicitée vers une position de pleine puissance. Chaque section comprend un mécanisme de renvoi 112 qui ramène la bobine à sa position neutre pour une pression prédéterminée. Application aux dispositifs de commande de fluide.
FR7919360A 1978-07-27 1979-07-26 Dispositif de commande de fluide a mecanisme de commande de debit variable individuellement pour chaque section de commande Granted FR2433663A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/928,649 US4193263A (en) 1978-07-27 1978-07-27 Fluid control system with individually variable flow control mechanism for each control section

Publications (2)

Publication Number Publication Date
FR2433663A1 true FR2433663A1 (fr) 1980-03-14
FR2433663B1 FR2433663B1 (fr) 1985-02-15

Family

ID=25456572

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7919360A Granted FR2433663A1 (fr) 1978-07-27 1979-07-26 Dispositif de commande de fluide a mecanisme de commande de debit variable individuellement pour chaque section de commande

Country Status (10)

Country Link
US (1) US4193263A (fr)
BE (1) BE877934A (fr)
BR (1) BR7904811A (fr)
CA (1) CA1112982A (fr)
DE (1) DE2930390C2 (fr)
FR (1) FR2433663A1 (fr)
GB (1) GB2026653B (fr)
IT (1) IT1193484B (fr)
SE (1) SE7906263L (fr)
ZA (1) ZA793866B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567233A1 (fr) * 1984-07-03 1986-01-10 Bennes Marrel Tiroir assiste pour la compensation de pression dans un distributeur hydraulique

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4779419A (en) * 1985-11-12 1988-10-25 Caterpillar Inc. Adjustable flow limiting pressure compensated flow control
DE3603811C2 (de) * 1986-02-07 1995-12-21 Bosch Gmbh Robert Hydraulisches Wegeventil
US4787294A (en) * 1987-07-29 1988-11-29 Hydreco, Incorporated Sectional flow control and load check assembly
WO1991002903A1 (fr) * 1989-08-16 1991-03-07 Kabushiki Kaisha Komatsu Seisakusho Dispositif de circuit hydraulique
JP2568926B2 (ja) * 1990-01-18 1997-01-08 株式会社小松製作所 アタッチメントの流量切換え装置
DE4136991C2 (de) * 1991-11-11 2000-11-02 Bosch Gmbh Robert Hydraulisches Wegeventil

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1530142A (fr) * 1967-07-03 1968-06-21 Abex Corp Vanne de réglage de débit
FR2017525A1 (fr) * 1968-09-06 1970-05-22 Borg Warner
FR2017503A1 (fr) * 1968-09-06 1970-05-22 Borg Warner
US3693506A (en) * 1971-04-15 1972-09-26 Borg Warner Control circuit
FR2203043A1 (fr) * 1972-10-16 1974-05-10 Sperry Rand Corp
US4145958A (en) * 1977-12-02 1979-03-27 Borg-Warner Corporation Fluid control system with automatically actuated motor port lock-out valves

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102865A (en) * 1934-06-20 1937-12-21 Vickers Inc Combined flow control and relief valve
DE1271343B (de) * 1966-04-26 1968-06-27 Friedmann Kg Alex Hydraulische Hubeinrichtung, insbesondere fuer Traktoren
US3401521A (en) * 1967-03-06 1968-09-17 Allis Chalmers Mfg Co Hydraulic control valve
US3532104A (en) * 1968-01-24 1970-10-06 Kenneth H Hoen Pressure compensated flow control valve system
US3602243A (en) * 1969-07-07 1971-08-31 Eaton Yale & Towne Pressure compensated multifunction control valve
US3631890A (en) * 1970-04-06 1972-01-04 Borg Warner Flow extending bypass valve
FR2139553A5 (fr) * 1971-08-07 1973-01-05 Riva Calzoni Spa
US3785392A (en) * 1971-10-21 1974-01-15 Eaton Corp Flow control valve
US4033236A (en) * 1971-12-27 1977-07-05 Caterpillar Tractor Co. All hydraulic motor grader circuitry
US3982469A (en) * 1976-01-23 1976-09-28 Caterpillar Tractor Co. Apparatus for controlling work element operating pressures in a fluid system
US4175473A (en) * 1976-06-08 1979-11-27 Shoketsu Kinzoku Kogyo Kabushiki Kaisha Fluid circuit
US4087968A (en) * 1977-04-28 1978-05-09 Caterpillar Tractor Co. Flow control valve for combining two dissimilar independent systems to a common pressure source

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1530142A (fr) * 1967-07-03 1968-06-21 Abex Corp Vanne de réglage de débit
FR2017525A1 (fr) * 1968-09-06 1970-05-22 Borg Warner
FR2017503A1 (fr) * 1968-09-06 1970-05-22 Borg Warner
US3592216A (en) * 1968-09-06 1971-07-13 Borg Warner Flow control valve
US3693506A (en) * 1971-04-15 1972-09-26 Borg Warner Control circuit
FR2203043A1 (fr) * 1972-10-16 1974-05-10 Sperry Rand Corp
US4145958A (en) * 1977-12-02 1979-03-27 Borg-Warner Corporation Fluid control system with automatically actuated motor port lock-out valves
FR2410754A1 (fr) * 1977-12-02 1979-06-29 Borg Warner Dispositif de commande de fluide a soupapes de fermeture d'orifices de moteur actionnees automatiquement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2567233A1 (fr) * 1984-07-03 1986-01-10 Bennes Marrel Tiroir assiste pour la compensation de pression dans un distributeur hydraulique

Also Published As

Publication number Publication date
DE2930390A1 (de) 1980-02-14
IT1193484B (it) 1988-07-08
SE7906263L (sv) 1980-01-29
IT7924704A0 (it) 1979-07-26
DE2930390C2 (de) 1985-12-05
GB2026653A (en) 1980-02-06
GB2026653B (en) 1983-01-12
CA1112982A (fr) 1981-11-24
US4193263A (en) 1980-03-18
BR7904811A (pt) 1980-04-22
BE877934A (fr) 1980-01-28
FR2433663B1 (fr) 1985-02-15
ZA793866B (en) 1981-03-25

Similar Documents

Publication Publication Date Title
FR2385638A1 (fr) Mecanisme elevateur articule
FR2367208A1 (fr) Dispositif de commande electrohydraulique
FR2587419B1 (fr) Dispositif de commande pour au moins deux consommateurs de fluide hydraulique alimentes par au moins une pompe
FR2433663A1 (fr) Dispositif de commande de fluide a mecanisme de commande de debit variable individuellement pour chaque section de commande
FR2357260A1 (fr) Dispositif de perfusion intraveineuse a commande electronique
FR2363045A1 (fr) Soupape commandee par electro-aimant
FR2353776A1 (fr) Vanne de commande de l'ecoulement d'un fluide
FR2436255B1 (fr) Dispositif hydraulique pour la commande de soupapes controlant le passage de gaz
FR2374569A1 (fr) Mecanisme de changement de vitesse en fonction de la charge muni d'un element hydrodynamique, tel qu'un convertisseur, et d'un ralentisseur hydrodynamique
FR2427530B1 (fr) Valve de commande de fluide, notamment pour appareil de telecommande d'installation sous-marine
CO London
FR2350528A1 (fr) Dispositif de regulation du debit d'un fluide dans un tuyau
FR2458018A1 (fr) Robinet de puisage et de distribution d'un liquide
BE855650A (fr) Soupape pour l'ecoulement d'un fluide
DE69329828D1 (de) Kapazitätsregelvorrichtung für hydraulische pumpe mit veränderlicher fördermenge
FR2366473A1 (fr) Systeme hydraulique pour milieux extremement froids
FR2399599A1 (fr) Dispositif d'actionnement de soupape
FR2450184A1 (fr) Installation de freinage hydraulique assiste perfectionnee
IT1130548B (it) Apparecchio idraulico di comando e o di misura particolarmente valvola regolatrice di portata a comando elettrico
FR2420067A1 (fr) Mecanisme anti-eruption
EP0003939A3 (fr) Perfectionnement aux appareils de levage à commande hydraulique
FR2373703A1 (fr) Systeme hydraulique comportant au moins deux dispositifs utilisateurs
BE748050A (fr) Dispositif de commande d'ecoulement de liquide par soupape a flotteur ala corrosion
FR2426851A1 (fr) Dispositif d'assemblage de deux elements tubulaires, notamment pour la reparation d'installations en mer
FR2377539A1 (fr) Dispositif de commande hydraulique pour au moins deux utilisateurs

Legal Events

Date Code Title Description
TP Transmission of property