US2900960A - Hydraulic control device - Google Patents

Hydraulic control device Download PDF

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Publication number
US2900960A
US2900960A US479620A US47962055A US2900960A US 2900960 A US2900960 A US 2900960A US 479620 A US479620 A US 479620A US 47962055 A US47962055 A US 47962055A US 2900960 A US2900960 A US 2900960A
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valve
pressure
source
piston
circuit
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US479620A
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English (en)
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Gratzmuller Jean Louis
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    • 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
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • 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
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being 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
    • 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
    • F15B2211/35—Directional control combined with flow 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41554—Flow control characterised by the connections of the flow control means in the circuit being connected to a return line 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
    • F15B2211/60—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
    • F15B2211/705—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
    • F15B2211/7052—Single-acting output members
    • 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

Definitions

  • the present invention relates to pressure fluid control systems whereby fluid under pressure is delivered in one direction for producing a desired effect and is discharged in another direction for exhaust or release.
  • It is a further object of the invention ⁇ to provide a pushbutton operated iluid ow control device to be inserted in the pressure line of a fluid motor to permit ⁇ flow of pressure fluid from a continuous fluid pressure source to one side of said motor while checking its return and to discharge fluid from said motor through said pressure line while checking the supply of pressure lluid from the source.
  • two push button operated control valves are provided for controlling the i main fluidlilow control device, one of said pushbutton operated valves being adapted to control the ⁇ flow of pressure fluid from the source to a valve actuating memberof the main fluid ilow control device responsive to iluid pressure from said source and also responsive to fluid pressure from said fluid motor, and the other pushbutton operated valve being adapted to connect said fluid pressure responsive valve Iactuating member of the main ow control device with the exhaust, the arrangement being :such that a short manual or remote controlled opening of said one pushbutton operated control valve will subject the pressure responsive valve actuating mem- ⁇ ber of the main How control device to suilicient lluid pressure from the source to move said valve actuating member to a position in which said fluid motor is connected to the source, whereafter the lluid pressure conducted to the uid motor through the main ow control device will maintain said pressure responsive valve button operated control valve has been opened to connect the pressure responsive valve actuating member to the exhaust to
  • control device particularly adapted for controlling the operationrof, electric circuit i breakers having an operating piston one side of which ⁇ is subjected to therforce of resilient means and the other ⁇ side of which may-be subjected to uid ⁇ pressure 'adapted to move the piston against the action of said resilient means.
  • Figure l is a general diagrammatical View of a hydraulic control device according to the invention.
  • Figure 2 diagrammatically shows such a hydraulic control device in its application to the control of a spring-loaded jack
  • Figure 3 shows the fluid low control device as applied to the control of a single acting hydraulic jack adapted to operate an electric circuit breaker.
  • ⁇ a hydraulic system adapted to deliver liquid under pressure in one direction for producing a desired effect, said system comprising a continuous liquid pressure source, e.g., a hydropneumatic accumulator 1, 1a utilization pressure line 2c leading to a Huid motor (not shown), and a low ⁇ pressure tank or reservoir 43.
  • a continuous liquid pressure source e.g., a hydropneumatic accumulator 1, 1a utilization pressure line 2c leading to a Huid motor (not shown)
  • a low ⁇ pressure tank or reservoir 43 e.g., a hydropneumatic accumulator 1, 1a utilization pressure line 2c leading to a Huid motor (not shown)
  • the flow control device ⁇ comprises a main ow control valve 9 having two movable valve members therein.
  • the body of the main valve 9 is formed with two coaxial chambers, one of which constitutes a piston chamber and the other a valve chamber 53 provided with an inlet port connected to the ⁇ source 1 by a pipe 2a, an outlet port communicating lwith the pressure line 2c, and an exhaust port connected ,piston 8 slidably mounted in the piston chamber of valve 9 to divide said piston chamber into two compartments 46 and 47 of variable volume.
  • the compartment 47 continuously communicates with the lowpressure container 43 throughV a duct 45.
  • the compartment 46 may be communicated through pipes 48, 49, -50 with the source 1, under the control of a normally closed feeding valve 29, the opening of which is determined by triggering means diagrammatically shown in Figure l, in the form of a push-button 6a.
  • the compartment ⁇ 46 may be also communicated through pipes 48, 51, 52 under the control of a normally closed unloading valve 24, e.g. with the low-pressure container 43, through a duct 54, notfully shown in Figure l.
  • the opening of the unloading valve 24 is determined by triggering means diagrammatically shown in Fig- ⁇ ure 1 under the shape of a push-button 15a.
  • This ldevice operates as follows:
  • the feeding valve 29 is opened and the compartment 46 of the valve 9 is fed with pressure liq'uid from the source 1. Since the eifective area of lthe piston 3 of the differential piston assembly is greater than the effective area of the valve member 5, both said areas being acted upon by the same liquid pressure, the differential piston assembly is shifted from the unloading position to the feeding position.
  • the utilization circuit 2c leading to a hydraulic jack H] is now fed with pressure liquid from the source .1, While piston Zblocks Communication betweenircilit 2c and the low-pressure container 43.
  • the vpipe 1i conducts pressure liquid from the i 1 tiliza tioncircuit 20, into the compartment '46 gthroughj' the pipes'Sl and' 4S, to ⁇ therebyrnaintain, in the said com partment, a liquid pressure sufficiently high to maintain the valve member in feedingposition.”'From this moment, i.e. a short time after the feeding valve 29 has been actuated, this feeding valve may be'olosed again without causing interruption of the feeding of the utilization circuit. This condition persists until the push-button'lSa is depressed, which causes opening ofi the unloading valve Z4.
  • the rate of the feeding ow 'of the compartment 46 from the utilization circuit 2c is limited byithe calibrated hole 35 and it will be easily understoodjthat 'if the relativecalibrations of the said hole ⁇ andthe evacualtion outlet controlled by theunloading valve 2li; is so caloulated that the rate of discharge through ⁇ the said valve v24 is higher than the rate ⁇ of feedingjthrough the said -ealibrated hole, Vthe liquid previously Containedin the Vcompartment lio will be evacuated through rthe pipes 52,
  • the control device ensures a rapid evacuation of the liquid from the circuit-making jack 3, in spite of the limited action of the electro-magnet'i since it is possible to unload the .circuit-making jack 3 through an outlet of a section as -large as desired. Since, on lthe other hand, the ball valve 25 requires no 'lost motion before its opening, thevdevice ⁇ also ensures a short time-of response to the circuit-breaking order. Rod 26 between the ball valves 5 andZS ensures, when piston 8 is ysubjected to the l.liquidpressure from source 1 to close the ball valve 25, the opening of ball valve 5 while, conversely, when the piston 8 is ⁇ unboth valves 5 and Z5 are simultaneously opened.
  • the springV l() permits both opening of the ball i valve 25 and closing of the ball valve 5.
  • the feeding rate of flow through .the deliveryV pipe 2a, 2b is preferably limited by means of a calibrated hole 27, to reduce the the yunwanted building-upV of .liquid pressnrb Q .L piston .8 whenball valve ⁇ 25 is in'unloadingpositionzliqnid 54' respectively.
  • non-return valves 30, 3E the respective loading springs of which are shown at 32 and 33, are interposed between the feeding ducts 2gb, 28C and ila, lllb respectively, of the valve 9, to prevent liquid from counter-ilowing towards either feeding source.
  • Thonon-return ⁇ valvell has vforits purpose to avoid, as the feeding valve 29 is triggered, any loss of time in the building-up, of the operative pressure below piston 8 whilethe non return valve 30 has the advantage of permitting to use a feeding valve 29, that may give rise toi slight leakages towards the ylow-pres sure. container without prejudice.
  • tro-magnet l5 may be automatically controlled by a device 34 responsive to the pressure in the source 1, e.g., through a hydraulic system and electric circuits, not shown in Figurel. kFurthermorqthe pressure-responsive. devicefSfmayf. also. control a device prohibitingany y energizing of .the circuitmaling electro-magnet 6, when the .pressure inthe ysource i. is insufficient for thepurposes aimed at.
  • FIG. 3 lhaveshownthe controlldeyice zas applied to. an .electric circuit .breaker column feornprising an upper tubularinsulator D provided fwith ,tivo vstationary contacts P1 and P2, alowentubularl. insulator T, .and a hydraulic jack Vamounted .between ,theeinsulatorsD and TI and having.its,pistonrodarranged-to cooperate with the .cpatacfs Pl, amLPltO maken, break an electriccrcuit.
  • the main iiow control valve 9 is connected to the continuous liquid pressure source 1 by pipe 2a, to the conduit K of insulator T by pipe 2d, and to the reservoir 43 by pipe 44 and the movable valve members 5 and 25 of the main flow control device 9 are adapted to selectively provide a passage for liquid ow from source 1 to one side of the operating piston of the circuit breaker, or a passage for liquid flow from said piston to reservoir 43.
  • the circuitmaking electro-magnet 6 When a circuit-making signal is received by the circuitmaking electro-magnet 6, the said electro-magnet is energized and lifts the movable valve member 29 of the feeding valve from its seat to permit the flow of pressure liquid from source 1 into the space of the main valve 9 below the pressure responsive valve actuating piston 8 thereof. The latter, thus fed with pressure liquid, opens against the action of the spring .10 and the feeding valve 5 and closes the unloading valve 25. From this moment, the source 1 sends liquid under pressure into the circuit-making jack Vp through the conduits 2a, 2b, 2c, 2d and K to move the piston of jack Vp against the action of the return-spring Rp to set the circuit-breaker into the circuit-making position, as shown in Figure 3.
  • the position of the circuit-breaker is displayed on the control station, by means of the selective action of a Y pressure responsive device M1 on one of two visual indicators constituted, in the example shown, by a circuitbroken signal lamp Ld and by a circuit-made signal lamp Le. If the pressure of the source 1 is insuicient to ensure in the required conditions, the circuit-making stroke, an interlocking device, ⁇ not shown, actuated, if desired, from the pressure responsive device M2 prohibits any energizing of the circuit-making electro-magnet 15.
  • the said pressure responsive device M2 automatically causes energizing of the circuitbreaking electro-magnet 15, and hence, the operation of the circuit-breaker into safe current interrupting position.
  • a valve adapted to maintain in the duct through which the liquid is evacuated from the circuit-making jack Vp towards the liquid container 43, a level ott liquid suiiiciently high to provide the required length of insulation corresponding to the voltage of the current ⁇ to be cut-off.
  • a pump P may be provided for feeding the source 1 from the liquid container 43.
  • the invention provides a ow control device that is in combination with a pressure line, a tank and a continuous iluid pressure source. Thls ow control device is inserted between the source and the pressure line and comprisesthe main body 9.
  • This body is provided with a first port means such as X in each iigure, first delivery conduit pipe portions such as 2a, 2b, between .the source and the port X, Figures 2 and 3 andpipe portion 2a in Figure l.
  • the body 9 further has second port means such as Y, Figure l, ⁇ and the trebletechnischs Y', Y, and Y in Figures 2 and 3.
  • a second delivery conduit provides communication between the source 1 and this second port means.
  • this second delivery conduit is comprised by the pipe portion 50, the bore through the body containing valve 29, and pipe portions 49 and 41S.
  • the second delivery conduit is pipe or duct portions 2a, 28a, the bore through the body containing valve 29, pipe portion 28b, past valve 30 ⁇ and pipe portion 28C, into communication with the opening Y.
  • Each form of the invention further includes means establishing communication between the pressure line and the second port means.
  • the duct or pipe portion 11, pipe portion S1 and pipe portions 51 and 48 provide for flow of fluid from the pressure line back to the body beneath the piston 8.
  • this communication is established by pipe portion 11a, past valve 31 and pipe portion 11b terminating at opening Y.
  • the valve body further has a third port Z that is in communication. with the pressure line and an exhaust port EP.
  • valves are such that in the event of a pressure drop through the second port means, that is, a pressure drop beneath the piston 3, valve 5 will move ⁇ member, the piston S, is mounted in the body so that when :duid enters the body through the second port means, valve 5 isopened andV valve 25 is closed.
  • the second delivery conduit has therein a first control valve 29 controlling ow of iiuid from the source 1 to the second port means Y, Fig. l and Y', Figures ⁇ 2 and 3.
  • a second control valve 24 is provided to connect the second-port means with the tank. In Figure l, when valve 24 is open, iiuid will flow from beneath the piston 3 through conduit portion 51 past valve 24, ball 52 through pipe 54 to tank.
  • valve 24 When valve 24 is opened in Figures 2 and 3, uid leaves the body through pipe S6, ows into pipe portion 44 (Fig. 3) and. 54' (Fig. 2) thence to tank. Both of these valves are normally biased to closed position, either hy the springs in Figure l or tluid pressure in the other two arrangements. Manually actuated operating means are provided to operate both of ⁇ the valves. This last-mentioned means being either the push buttons 6a and 15a or the button controlled solenoids 6 andl 15, in the ⁇ other figures.
  • valve 2.4 This condition exists runtil valve 2.4 is opened, which occasions the pressure drop Vbeneath the piston 8, whereupon valve i sure liquid, feeding duct means between said source and said control jack and a container ⁇ at a pressure lower than that of said source, a hydraulic control device including a valve means in said feeding duct means between said source and said control jack andV controlling communication between said control jack and said source and between said control jack and said container respectively, a loaded hydraulic pilot jack operatively connected with said valve means and including a piston adapted, when fed with liquid under pressure, to move said valve means against the load to establish communication between said source and said control jack, feeding means including a iirst normally closed triggering valve means operable whenopen to feed said pilot jack with liquid from source during a short time, unloading means including a second normally closed triggering valve means operable when open to permit exhaust of liquid Ifrom said pilot jack, liquid conducting means downstream of said control device for placing said pilot jack in permanent communication with said feeding duct means, for
  • valve means comprising two valve members located rwithin said casing, said valve members and said casing being constructed and arranged to establish the required communication withl said feeding duct means without any lost motion as soon as said valve members are actuated, and an operative mechanical connection between said valve members and the piston of said pilot jack to selectively cause immediate opening of one of sai-d valve members followed by closing of the other one as soon as said piston is actuated.
  • each said valve member comprising a ball valve
  • said valve casing having a cylindrical passage therethrough communicating with said feeding duct means via said casing, a valve seat at each end of said passage for receiving said ball valves
  • said operative mechanical connection comprising a piston rod fast with the piston of said pilot jack and adapted to urge that ball valve that elements assuming s fading" valve @lass-sf, aus valve ⁇ casing having a cylindrical passage, and a port providing' communication between said passage and the feeding duct means downstream of the casing, through fluid ovvs into said control jack
  • said feediiig valve element comprising a ball cooperable with a seat provided at one end of said passage Vfor controlling municatio'n tosaid control jack
  • the other of said valve elements constituting an unloading valve element comprising the end of a rod fastwith the piston of said pilot jack, and a second rod freelyslidable vin said passage interposed between said valve elements and fast with said first rod, said rods
  • a push button operatively connected with at least one orf said normally closed triggering valve means so as to permit opening thereof during a short time.
  • a flow controlV device for delivering uid under pressure to said line, of a flow controlV device to be inserted between said source and said pressure line and comprising a body having a first port means, a Yfirst delivery conduit providing communication between said source and said first port means, said body further having second port means, a second deliveryy conduit providing communication between said source and said second port means, means establishing communication between said pressure line and said second port means, a thirdA port communicating with said pressure line and an exhaust port, means establishing communication between said exhaust port and said tank, means establishing communication between said second port means and said tank, means providing a permanentv restricted passage in the means establishing communication between said second port means and' said pressure line, movable valve means arranged in said bodyV to selectively provide a first passage between said rst port means and said thirdl huid pressure entering saidvbody throughv said second port meansto thereby close said second passage and to open said first passage, a first control valve in said second

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
US479620A 1954-01-15 1955-01-03 Hydraulic control device Expired - Lifetime US2900960A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1225497X 1954-01-15

Publications (1)

Publication Number Publication Date
US2900960A true US2900960A (en) 1959-08-25

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Application Number Title Priority Date Filing Date
US479620A Expired - Lifetime US2900960A (en) 1954-01-15 1955-01-03 Hydraulic control device

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US (1) US2900960A (de)
CH (1) CH335538A (de)
DE (1) DE1225497B (de)
FR (2) FR1098565A (de)
GB (1) GB780763A (de)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2997066A (en) * 1959-04-30 1961-08-22 Ross Operating Valve Co Fluid-actuated shiftable mechanism
US3116607A (en) * 1960-11-28 1964-01-07 Gratzmuller Jean Louis Hydraulic power system control
US3175470A (en) * 1962-03-07 1965-03-30 Eimco Corp Pressure fluid control means and system
US3223000A (en) * 1964-05-27 1965-12-14 James A Payne Gun control
US3253516A (en) * 1963-09-12 1966-05-31 Ross Operating Valve Co Valve
US3419030A (en) * 1964-11-20 1968-12-31 Gratzmuller Jean Louis Fast evacuation valve
US3494258A (en) * 1968-05-20 1970-02-10 Ambac Ind Solenoid operated valve control mechanism
US3495501A (en) * 1968-06-04 1970-02-17 Gen Electric Valve operating and emergency closing mechanism
US3520511A (en) * 1968-02-14 1970-07-14 Lucas Industries Ltd Pulse operated valve
US3561326A (en) * 1968-03-06 1971-02-09 Parker Hannifin Corp Pulse phase modulated servoactuator
US3564975A (en) * 1968-11-20 1971-02-23 Gen Motors Corp Power steering gear
US3654837A (en) * 1969-12-29 1972-04-11 Abex Corp Hydraulic control systems
DE2164759A1 (de) * 1971-12-13 1973-06-14 Bbc Brown Boveri & Cie Hydraulischer antrieb, insbesondere fuer elektrische schaltgeraete
FR2233516A2 (en) * 1973-06-14 1975-01-10 Comp Generale Electricite Fluid press. control valve assembly - has three pistons on single shaft and pilot valve to control fluid flow
US3885454A (en) * 1972-07-13 1975-05-27 Siemens Ag Fluid actuating device for an electric circuit breaker
US3908377A (en) * 1972-09-27 1975-09-30 Hydromatik Gmbh Control system for a hydrostatic transmission
US3969985A (en) * 1972-07-12 1976-07-20 Siemens Aktiengesellschaft Fluid actuating device for an electric circuit breaker
US4036106A (en) * 1975-04-03 1977-07-19 Southwestern Manufacturing Co. Actuator control system
US4085587A (en) * 1975-11-03 1978-04-25 Leslie H. Garlinghouse Fail safe liquid power device
US4179889A (en) * 1978-02-22 1979-12-25 Gondek John T Control circuit for hydraulic cylinder and shaft assembly
US4204461A (en) * 1978-01-04 1980-05-27 Gratzmueller C A Hydraulic control system for electric circuit-breakers
DE3048814A1 (de) * 1979-12-27 1981-09-24 Hitachi, Ltd., Tokyo Hydraulische betaetigungseinrichtung
US4296910A (en) * 1977-08-29 1981-10-27 Gratzmuller J Hydraulically controlled safety valve
US4516472A (en) * 1980-12-26 1985-05-14 Tokyo Shibaura Denki Kabushiki Kaisha Hydraulically-operated breaking device
US4570662A (en) * 1984-04-09 1986-02-18 General Motors Corporation Demand responsive flow control valve
US4620567A (en) * 1983-08-29 1986-11-04 American Standard Inc. Solenoid-operated valve
DE3601877C1 (de) * 1986-01-23 1987-06-04 Licentia Gmbh Antrieb fuer Hochspannungs-Leistungsschalter
US4794950A (en) * 1987-04-29 1989-01-03 Gratzmueller C A Three-way hydraulic valve
US5209153A (en) * 1990-02-28 1993-05-11 Daia Industry Co., Ltd. Portable hydraulically operated device incorporating automatic drain valve
WO2001046595A1 (en) * 1999-12-23 2001-06-28 Spx Corporation Pneumatic volume booster for valve positioner
EP2565468A1 (de) * 2011-09-01 2013-03-06 Carl Freudenberg KG Ventilanordnung
CN110582818A (zh) * 2017-03-06 2019-12-17 V·K·瓦克肖 用于检测火灾并防止变压器爆炸的设备及其方法

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FR1135122A (fr) * 1955-11-04 1957-04-24 Jean Louis Gratzmuller Dispositif de commande hydraulique à contrôle de vitesse, pour disjoncteur
US3021410A (en) * 1957-04-30 1962-02-13 Allis Chalmers Mfg Co Device for lowering and raising a movable structure from or to its support
FR1181089A (fr) * 1957-08-12 1959-06-11 Perfectionnements aux circuits hydrauliques de commande
FR2115506A5 (de) * 1970-11-23 1972-07-07 Gratzmuller Jean Louis
FR2116863A5 (fr) * 1970-12-10 1972-07-21 Gratzmuller Jean Louis Commande hydraulique a deux voies
JPS6028082B2 (ja) * 1977-07-20 1985-07-03 株式会社日立製作所 流体圧駆動装置
FR2410753A1 (fr) 1977-12-02 1979-06-29 Gratzmuller Claude Commande hydraulique simultanee, notamment pour la commande des disjoncteurs electriques
DE8300760U1 (de) * 1983-01-13 1984-11-08 Beringer-Hydraulik GmbH, Neuheim, Zug Umschaltsitzventil

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Cited By (37)

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US2997066A (en) * 1959-04-30 1961-08-22 Ross Operating Valve Co Fluid-actuated shiftable mechanism
US3116607A (en) * 1960-11-28 1964-01-07 Gratzmuller Jean Louis Hydraulic power system control
US3175470A (en) * 1962-03-07 1965-03-30 Eimco Corp Pressure fluid control means and system
US3253516A (en) * 1963-09-12 1966-05-31 Ross Operating Valve Co Valve
US3223000A (en) * 1964-05-27 1965-12-14 James A Payne Gun control
US3419030A (en) * 1964-11-20 1968-12-31 Gratzmuller Jean Louis Fast evacuation valve
US3520511A (en) * 1968-02-14 1970-07-14 Lucas Industries Ltd Pulse operated valve
US3561326A (en) * 1968-03-06 1971-02-09 Parker Hannifin Corp Pulse phase modulated servoactuator
US3494258A (en) * 1968-05-20 1970-02-10 Ambac Ind Solenoid operated valve control mechanism
US3495501A (en) * 1968-06-04 1970-02-17 Gen Electric Valve operating and emergency closing mechanism
US3564975A (en) * 1968-11-20 1971-02-23 Gen Motors Corp Power steering gear
US3654837A (en) * 1969-12-29 1972-04-11 Abex Corp Hydraulic control systems
DE2164759A1 (de) * 1971-12-13 1973-06-14 Bbc Brown Boveri & Cie Hydraulischer antrieb, insbesondere fuer elektrische schaltgeraete
US3969985A (en) * 1972-07-12 1976-07-20 Siemens Aktiengesellschaft Fluid actuating device for an electric circuit breaker
US3885454A (en) * 1972-07-13 1975-05-27 Siemens Ag Fluid actuating device for an electric circuit breaker
US3908377A (en) * 1972-09-27 1975-09-30 Hydromatik Gmbh Control system for a hydrostatic transmission
FR2233516A2 (en) * 1973-06-14 1975-01-10 Comp Generale Electricite Fluid press. control valve assembly - has three pistons on single shaft and pilot valve to control fluid flow
US4036106A (en) * 1975-04-03 1977-07-19 Southwestern Manufacturing Co. Actuator control system
US4085587A (en) * 1975-11-03 1978-04-25 Leslie H. Garlinghouse Fail safe liquid power device
US4296910A (en) * 1977-08-29 1981-10-27 Gratzmuller J Hydraulically controlled safety valve
US4204461A (en) * 1978-01-04 1980-05-27 Gratzmueller C A Hydraulic control system for electric circuit-breakers
US4179889A (en) * 1978-02-22 1979-12-25 Gondek John T Control circuit for hydraulic cylinder and shaft assembly
DE3048814A1 (de) * 1979-12-27 1981-09-24 Hitachi, Ltd., Tokyo Hydraulische betaetigungseinrichtung
US4516472A (en) * 1980-12-26 1985-05-14 Tokyo Shibaura Denki Kabushiki Kaisha Hydraulically-operated breaking device
US4620567A (en) * 1983-08-29 1986-11-04 American Standard Inc. Solenoid-operated valve
US4570662A (en) * 1984-04-09 1986-02-18 General Motors Corporation Demand responsive flow control valve
DE3601877C1 (de) * 1986-01-23 1987-06-04 Licentia Gmbh Antrieb fuer Hochspannungs-Leistungsschalter
US4794950A (en) * 1987-04-29 1989-01-03 Gratzmueller C A Three-way hydraulic valve
AU595760B2 (en) * 1987-04-29 1990-04-05 Claude Alain Gratzmuller Three-way hydraulic valve
US5209153A (en) * 1990-02-28 1993-05-11 Daia Industry Co., Ltd. Portable hydraulically operated device incorporating automatic drain valve
WO2001046595A1 (en) * 1999-12-23 2001-06-28 Spx Corporation Pneumatic volume booster for valve positioner
US6357335B1 (en) * 1999-12-23 2002-03-19 Sox Corporation Pneumatic volume booster for valve positioner
EP2565468A1 (de) * 2011-09-01 2013-03-06 Carl Freudenberg KG Ventilanordnung
CN102966617A (zh) * 2011-09-01 2013-03-13 卡尔·弗罗伊登伯格公司 阀装置
US9022072B2 (en) 2011-09-01 2015-05-05 Carl Freudenberg Kg Valve array
CN110582818A (zh) * 2017-03-06 2019-12-17 V·K·瓦克肖 用于检测火灾并防止变压器爆炸的设备及其方法
CN110582818B (zh) * 2017-03-06 2022-09-30 V·K·瓦克肖 用于检测火灾并防止变压器爆炸的设备及其方法

Also Published As

Publication number Publication date
FR67250E (fr) 1957-11-25
CH335538A (de) 1959-01-15
FR1098565A (fr) 1955-08-08
DE1225497B (de) 1966-09-22
GB780763A (en) 1957-08-07

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