IT971707B - HYDRAULIC CONTROL IN PARTICULAR FOR ELECTRICAL APPLIANCES OF VRA HAND - Google Patents

HYDRAULIC CONTROL IN PARTICULAR FOR ELECTRICAL APPLIANCES OF VRA HAND

Info

Publication number
IT971707B
IT971707B IT32705/72A IT3270572A IT971707B IT 971707 B IT971707 B IT 971707B IT 32705/72 A IT32705/72 A IT 32705/72A IT 3270572 A IT3270572 A IT 3270572A IT 971707 B IT971707 B IT 971707B
Authority
IT
Italy
Prior art keywords
vra
hand
hydraulic control
electrical appliances
appliances
Prior art date
Application number
IT32705/72A
Other languages
Italian (it)
Original Assignee
Bbc Brown Boveri & Cie
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 Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
Application granted granted Critical
Publication of IT971707B publication Critical patent/IT971707B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/34—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator hydraulic
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • 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
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/222—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which throttles the main fluid outlet as the piston approaches its end position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H2033/308—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator comprising control and pilot valves
IT32705/72A 1971-12-13 1972-12-11 HYDRAULIC CONTROL IN PARTICULAR FOR ELECTRICAL APPLIANCES OF VRA HAND IT971707B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1804271A CH539784A (en) 1971-12-13 1971-12-13 Hydraulic drive, in particular for electrical switching devices

Publications (1)

Publication Number Publication Date
IT971707B true IT971707B (en) 1974-05-10

Family

ID=4429986

Family Applications (1)

Application Number Title Priority Date Filing Date
IT32705/72A IT971707B (en) 1971-12-13 1972-12-11 HYDRAULIC CONTROL IN PARTICULAR FOR ELECTRICAL APPLIANCES OF VRA HAND

Country Status (9)

Country Link
US (1) US3863547A (en)
JP (1) JPS5627964B2 (en)
CA (1) CA973597A (en)
CH (1) CH539784A (en)
DE (1) DE2164759C2 (en)
FR (1) FR2163498B1 (en)
GB (1) GB1361919A (en)
IT (1) IT971707B (en)
SE (1) SE381952B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2235074B2 (en) * 1972-07-12 1979-05-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen Hydraulic actuator for an electrical switch
DE2356607A1 (en) * 1973-11-13 1975-05-22 Bosch Gmbh Robert HYDRAULIC CONTROL SYSTEM
FR2265166B1 (en) * 1974-03-18 1979-10-19 Siemens Ag
FR2308815A1 (en) * 1975-04-23 1976-11-19 Alsthom Cgee Differential piston oleopneumatic control system for switch gear - closes by power valve connecting chambers together and to power accumulator
US4218955A (en) * 1979-01-10 1980-08-26 Outboard Marine Corporation Pressure actuated shifting mechanism
US4276809A (en) * 1979-04-23 1981-07-07 General Electric Company Simplified fail-fixed servovalve
DE3524414C2 (en) * 1985-04-16 1994-06-16 Mannesmann Ag linear actuator
DE3612827A1 (en) * 1986-04-16 1987-10-22 Bbc Brown Boveri & Cie HYDRAULIC DRIVE FOR AN ELECTRICAL SWITCHGEAR
US4785712A (en) * 1986-05-27 1988-11-22 Mitsubishi Denki Kabushiki Kaisha Hydraulic operating apparatus for electric circuit breaker
FR2641342A1 (en) * 1989-01-04 1990-07-06 Roux Roger FLUID ACTUATOR
DE4336074C2 (en) * 1993-10-22 1998-07-02 Abb Patent Gmbh Hydraulic device for a hydraulic drive for a high-voltage circuit breaker
DE4340533C2 (en) * 1993-11-29 1998-02-19 Abb Patent Gmbh Hydraulic device for actuating a drive piston for a movable component
US5718115A (en) * 1996-05-31 1998-02-17 Aim, Inc. Constant force hydraulic control system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2293167A (en) * 1939-11-03 1942-08-18 Glenn L Martin Co Hydraulic cylinder
US2385942A (en) * 1941-06-13 1945-10-02 Edward A Rockwell Travel control valve system
US2704053A (en) * 1949-11-25 1955-03-15 Mcfarland Mfg Corp Actuator for chemical injector or the like
FR1098565A (en) * 1954-01-15 1955-08-08 Hydraulic control device for circuit breaker, or the like
US2993511A (en) * 1955-06-17 1961-07-25 Johnson Clarence Solenoid operated valve and solenoid assembly
US3060951A (en) * 1956-12-26 1962-10-30 Alsacienne Constr Meca Hydraulic regulating system
US3012541A (en) * 1959-04-02 1961-12-12 Pneumo Dynamics Corp Timed delay actuator
NL261563A (en) * 1960-03-01
CH381937A (en) * 1960-09-30 1964-09-15 Tschudin & Heid Aktiengesellsc Delay element
US3322038A (en) * 1964-04-09 1967-05-30 Sperry Rand Corp Hydraulic hammer
DE1550812A1 (en) * 1966-05-31 1969-10-09 Klose Kommandit Ges Electrohydraulic adjustment device with hydraulic accumulator
DE1690130C3 (en) * 1968-01-12 1979-02-15 Siemens Ag, 1000 Berlin U. 8000 Muenchen Hydraulic drive for electric circuit breakers
DE1703061C3 (en) * 1968-03-27 1974-02-14 Fried. Krupp Gmbh, 4300 Essen Hydraulically operated piston engine
FR1578917A (en) * 1968-05-06 1969-08-22

Also Published As

Publication number Publication date
JPS5627964B2 (en) 1981-06-29
JPS4865463A (en) 1973-09-08
FR2163498B1 (en) 1979-04-27
CA973597A (en) 1975-08-26
DE2164759A1 (en) 1973-06-14
SE381952B (en) 1975-12-22
GB1361919A (en) 1974-07-30
CH539784A (en) 1973-07-31
FR2163498A1 (en) 1973-07-27
DE2164759C2 (en) 1989-01-12
US3863547A (en) 1975-02-04

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