US2839079A - Servo-valve - Google Patents

Servo-valve Download PDF

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Publication number
US2839079A
US2839079A US51096955A US2839079A US 2839079 A US2839079 A US 2839079A US 51096955 A US51096955 A US 51096955A US 2839079 A US2839079 A US 2839079A
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US
United States
Prior art keywords
piston
valve
disks
cylinder
apertures
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 - Lifetime
Application number
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English (en)
Inventor
Stanley H Holmes
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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
Priority to US51096955 priority Critical patent/US2839079A/en
Application filed by Individual filed Critical Individual
Priority to GB538356A priority patent/GB792748A/en
Publication of US2839079A publication Critical patent/US2839079A/en
Application granted granted Critical
Priority to DE2050598A priority patent/DE2050598C3/de
Priority to DE19712110320 priority patent/DE2110320C3/de
Priority claimed from DE19712110320 external-priority patent/DE2110320C3/de
Priority to DE2128967A priority patent/DE2128967A1/de
Priority to CH1478371A priority patent/CH538084A/de
Priority to IT5343371A priority patent/IT939553B/it
Priority to SE1305471A priority patent/SE381945B/xx
Priority to FR7138150A priority patent/FR2113166A5/fr
Priority to GB4816471A priority patent/GB1302330A/en
Priority to US3790128D priority patent/US3790128A/en
Priority to DE2212176A priority patent/DE2212176A1/de
Priority to US3785404D priority patent/US3785404A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q35/00—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually
    • B23Q35/04—Control systems or devices for copying directly from a pattern or a master model; Devices for use in copying manually using a feeler or the like travelling along the outline of the pattern, model or drawing; Feelers, patterns, or models therefor
    • B23Q35/24—Feelers; Feeler units
    • B23Q35/26—Feelers; Feeler units designed for a physical contact with a pattern or a model
    • B23Q35/36—Feelers; Feeler units designed for a physical contact with a pattern or a model for control of a hydraulic or pneumatic copying system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0712—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising particular spool-valve sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K43/00—Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection
    • G03B21/50—Control devices operated by the film strip during the run
    • G03B21/52—Control devices operated by the film strip during the run by prepared film
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/60—Automatic controllers hydraulic only
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F7/00—Shielded cells or rooms
    • G21F7/06—Structural combination with remotely-controlled apparatus, e.g. with manipulators
    • G21F7/068—Remotely manipulating devices for fluids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86718—Dividing into parallel flow paths with recombining
    • Y10T137/86759—Reciprocating
    • Y10T137/86791—Piston
    • Y10T137/86799—With internal flow passage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86879—Reciprocating valve unit
    • Y10T137/86895—Plural disk or plug
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/87925—Separable flow path section, valve or closure in each
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/87981—Common actuator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49405—Valve or choke making
    • Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making

Definitions

  • the present invention relates to a servo valve and a hydraulic control system, and more particularly relates to a valve mechanism and hydraulic control system for controlling bidirectional fluid actuation of any mechanism to be so actuated.
  • the hydraulic system is effective to control bidirectional actuation of a piston and cylinder assembly controlling movement of a tool block on a lathe.
  • Another object of the present invention is to provide a new and improved hydraulic system for controlling hydraulic actuation-and to effectively follow a template.
  • Another object of the present invention is to provide a new and improved hydraulic system with a servo valve including means therein to actuate fluid by-pass valves.
  • Still another object of the present invention is to provide a new and improved servo valve for an hydraulic system, this valve being operable to control fluid flow through a plurality of outlets in the valve and from an inlet into the valve.
  • Still another object of the present invention is to provide a new and improved servo valve mechanism with a cylinder having regions of differing internal diameters, alternate regions having the same diameter and adjacent regions having different diameters, and a piston configurated to conform to the regions of a cylinder and means to control resilient reciprocation of the piston whereby fluid flow through ports in the cylinder is controlled.
  • Still another object of the present invention is to provide. a new and improved servo valve mechanism with apertured housing segments having varied apertures therein, alternate apertures being substantially identical and adjacent apertures being different, and a plurality of piston segments assembled together with the piston segments being dimensioned to correspond to the apertures in the housing segments, means resiliently mounting the piston for axial movement within the cylinder, means to adjust the resilient bias against the piston in one direction, and means to control axial displacement in the piston whereby fluid flow through ports in the cylinder is controlled.
  • Still another object of the present invention is to pro- 2,839,079 Patented June 17, 1958 ice vide a new and improved device of the class described with anew and improved actuator operable to actuate the mechanism by either longitudinal forces applied thereto or transverse forces applied thereto.
  • Still another object of the present invention is to provide a new and improved servo valve of the class described with an actuating plate pivotally coupled to the piston in the valve, pivotally coupled to an actuator and pivotally coupled to by-pass control means such as a micrc switch of the like.
  • Still another object of the present invention is to provide a new and improved actuator mechanism for a servo valve of the class described.
  • Figure 1 is a more or less diagrammatic plan View of the lathe having a tool block actuator and hydraulic control system therefor embodying the principles of the present invention:
  • Figure 2 is an end View of a servo valve for the control system and embodying the principles of this invention.
  • Figure 3 is a sectional view of the servo valve of Figure 2 viewed as taken substantially along the line HIlIl of Figure 2.
  • Figure 1 there is illustrated in Figure 1 more or less diagrammatically, a fragmental portion of a lathe bed 10 carrying a live center mechanism 11 and a dead center mechanism 12 between which there is disposed a tool block 13 operable to traverse the work piece 14 held between a live center po nt 15 and a dead center point 16.
  • the tool block carries a cutting tool 17 whereby the work piece 14 may be lathe cut to a desired contour as the tool block 13 traverses the work piece by riding on the bed 10.
  • the tool block 13 is movable transversely of the lathe bed 19 whereby contoured configurations may be cut into the work piece 14.
  • the tool block base 18 which carries the tool block 13 and rides on the lathe bed 10 is equipped with a double acting piston and cylinder assembly 19 having a piston 26 reciprocably disposed in a cylinder 21 and connected to a piston rod 22 which is in turn connected to the tool block 13 whereby bidirectional operation of the piston and cylinder assembly is transmitted to the tool block 13.
  • the piston and cylinder assembly 19 is connected from its opposite ends through fluid feed tubes 23 and 24 to a servo valve mechanism 25 which is provided with a feed tube 26 leading to fluid pump connected to an appropriate reservoir, the valve 25 also being provided with reservoir return tubes 27 and 2,8.
  • the valve 25 is equipped with a template follower stylus 29 which follows a template 30 to actuate the valve and thereby control the flow of fluid from the inlet tube 26 to the actuating piston and cylinder assembly 19 through the tubes 23 and 24 and to control return to the reservoir through the tubes 27 and 28.
  • a template follower stylus 29 which follows a template 30 to actuate the valve and thereby control the flow of fluid from the inlet tube 26 to the actuating piston and cylinder assembly 19 through the tubes 23 and 24 and to control return to the reservoir through the tubes 27 and 28.
  • valve 25 is so operable to control fluid flow to the double acting piston and cylinder assembly 19 that the tool 17 will describe a path identical to that-of a contoured edge on the template 30 where by the work piece 14 will be cut in accordance with that contour.
  • the valve mechanism is provided with an electrically actuable controlling mechanism whereby'by-pass valves 31 and 32'will be actuated selectively to open the hydraulic feed line 26 directly to the feed tubes 23 and 24 respectively depending upon the direction of actuation.
  • the valve mechanism is a smoothly acting valve V which is operative to meter the volume of oil flowing therethrough and is eifective upon actuation of the stylus to permit full flow in one direction and control velocity in the other as well as being effective tocontrol fluid flow pressure. Additionally, the valve mechanism is adjustable for proper balancing thereof whereby the valve operation is extremely smooth.
  • an actuator mechanism 33 is carried on an actuator mounting bracket 39 which is securedto the housing 33 by screws 4% or the like threadably engaging the side Walls of the housing 33
  • the actuator end of the housing 33 is structurally open to receive a, plurality of housing or cylinder segments or disks, successively identified at 41, 42, 43, 44, 45, 46 and 47, which are disposed successively in interfacial engagement with each other and held against a shoulder 48 within the housing 33 by a clamping ring 49 threadably engaging the interior of the side walls of the housing 33 at the actuator end thereof.
  • the said disks 41-47 are axially apertured as at 41' through 47' and the clampingring 49 is provided with an axial aperture 49. While the dimensions of the apertures 41,
  • Thi dimensioning, relation and assembly of the segments or disks is important for proper operation of the valve mechanism and a proper cooperation of the cylinder portion of the valve with the piston portion thereof described immcdiately herein below.
  • the disks 56 and 58 are so spaced that the spacing between the, disks 42 and 56 is identical to the spacing between the disks 44 and 58; and the spacing between the disks 56 and 44 is identical to the spacing between the disks 53 and 46.
  • any axial displacement of the piston assembly will result in identical variations in'the spacings of the'housing disks and piston disks and, at all times, the spacing at one end of each of the piston disks will be identical and spacing of the other side of the piston disks to the housing disks This operational characteristic of the will be identical.
  • piston disks and cylinder disks permits a proper control of fluid flow within the valve between the diaphragms 50 and 51.
  • this characteristic of actuated operation of the piston assembly permits proper fluid flow control through the ports 27, 23, 26, 24' and 28' which correspond in placement to the fluid tubes 23 and 24 leading to the double acting piston cylinder assembly in Figure l, the fluid flow tubes 27 and 28 leading to thereservoir, and the fluid tube 26 leading to the valve' mechanism from a fluid supply pump, respectively.
  • These ports extend axially through the housing 33 and are placed a to meet with annular outer peripheral grooves 42a, 43a,
  • Radial apertures 27a,.23a, 26a, 24a and 28a are provided in the disks of 42' through 46 to thereby properly communicate the housin'gports' 27', 23., 26', 24' and 28' respectively with the apertures and space within the cylinder assembly.
  • the actuator end of the piston rod is provided with a pivot head pivotally connecting the same to an actuator plate 61 carrying a ball pivot socket member 62 and also pivotally engaging the strongly resiliently outwardly urged control button 63 of a micro-switch or the like 64 adjustably positionable by an adjusting screw or the like 65 mounted on the actuator bracket 39.
  • the microswitch 64 and/or similar mechanisms may be provided herein to operate the over travel solenoids and bypass valves 31 and 32 and that when it is desired to eliminate the micro-switches and the by-pass valves, an over travel spring may be substituted for the micro switch between the actuator plate 61 and the adjusting screw 65.
  • the resilient bias at the point of engagement of the switch button 63 with the actuator plate 61 is greater than any axial bias on the piston assembly provided by the resilient diaphragms 50 and 51 and the adjusting spring 60 so that any actuating force on the actuator plate 61 applied through the ball pivot socket 62 efiects axial movement of the piston assembly for valve actuation. It is only when the limit of movement of the piston assembly to the left is reached that further force on the actuating plate ball pivot socket 62 to the left will cause operation of the micro switch 64 or an over travel spring substituted therefor, or a limit or movement of the lower end of the plate 61 is reached the movement of the piston to the right will operate the micro switch.
  • the stylus and actuator structure is such that a ball 66 is held between the ball pivot socket 62 on the actuator plate 61 and a ball pivot socket 67 on an inner end of a stylus carrier 68 having a tracer or directional stylus 69 secured in the outer end'thereof by set screw or the like 70.
  • the stylus carrier 68 is resiliently mounted in a stylus bushing 71 by a spring 72 seated against a retainer ring 73 in the stylus bushing and urging the stylus carrier into intershoulder engagement, as at 74, with the stylus bushing 71.
  • the stylus bushing 71 is in turn mounted in a ball bearing bushing 75 for substantially frictionless operation and reciprocation therein, the ball bearing bushing being mounted on the actuator bracket 39.
  • the stylus bushing is also urged resiliently against the ball 66 to retain the same between the ball pivot pockets by a small spring 76 on the inner side of the actuatingbracket 39.
  • any axial inward force on the stylus 69 will be transferred to the ball 66, to the actuated plate 61 and then to the valve piston assembly, and if the force is of sufiicient strength then it will also be transferred to the micro-switch 64 or an over travel spring substituted therefor. If the stylus 69 is freed of engagement then resilient force acting on the piston assembly from the adjusting spring 60 will move the stylus to the right through the force acting through the actuator plate 61 and the ball 66, and if travel is carried beyond the limit of right hand axial movement of the piston 52, then the micro-switch 64, which may be a switch of the double throw type, is actuated oppositely.
  • This mechanism is also sensitive to radial force applied on the stylus 69 since that will cause relative pivotal movement of the stylus carrier about the shoulder engagement thereof with the stylus bushing at such a point as 74 whereby there will be a result of movement in the actuating plate 61 and thereby in the piston assembly for the valve.
  • the adjustor or adjusting mechanism 35 is so coupled to the piston assembly as to provide for very fine adjustment of the resilient force applied on the piston through spring 60 and thereby very fine adjustment of the piston assembly with respect to the cylinder assembly.
  • the adjusting mechanism 35 includes a difierentially threaded internally and externally threaded adjusting screw 77 having its external threads 78 threadably engaging a threaded aperture 79 in the end wall 34 of the housing 33.
  • the outer end of a central aperture 80 in a screw 77 is enlarged to freely receive an inner screw 81 which threadably engages inner threads 32 on the inner end of the screw 77.
  • the screw 81 has a flanged spring backing member 83 fixed thereon for axial movement therewith, the spring backing member 83 operating to confine the spring 60 of the adjusting mechanism between the end piston disk 54 and the spring backing member 83 itself.
  • the screw 81 On its innermost end, the screw 81 carries a stopblock 160 which is fixed thereon for axial movement therewith by any such means as being slidably engaged on the screw.
  • This stop block is fitted for axial movement within a piston stop 101 which takes the form of a flanged sleeve secured to the end of the piston rod 52 immediately adjacent to the adjusting mechanism or forming a part of the piston disk 54.
  • the exposed end 102 of the flanged sleeve and piston stop 101 is radially inwardly flanged as shown at 163 whereby it cooperates with the stop block in the manner immediately hereinafter described.
  • stop block 100 and flanged portion 103 cooperates to limit'movement of the valve spool or piston to such a position that when the valve spool or piston is moved to its maximum limit in a right hand direction as viewed in Figure 3, the piston disks 56 and 58 will be held out of engagement with the immediately adjacent faces of the housing or cylinder disk segment 44 and 46.
  • the adjusting mechanism provides for such a controlled position stop of the piston or valve spool and permits fine adjustment of the stop since fine adjustment of the axial position of the screw 81 will finally adjust the axial position of the stop block and thereby finally adjust the position at which the flanged sleeve or piston stop 101 will engage the stop block 100 and thereby finally adjust the limit of right hand movement of the piston or valve spool 52 as viewed in Figure 3.
  • a servo valve comprising a plurality of housing segment plates having respectively difierent size apertures therein and secured'together with the apertures coaxially arranged, the apertures in alternate segment plates being of the same dimensions, a piston resiliently mounted for resilient axially reciprocable movement in the apertures in said segment plates, said piston being comprised of segments, of different dimensions corresponding to the apertures in said segment plates and being alternately of the same dimensions, resilient diaphragms sealing the ends of the secured together segmentplates and sealingly and resiliently supporting said piston, an actuatingplate having pivotal engagement with said piston, radial ports leading from certain of said segment pla.es, means to'control displacement of the piston to control fluid flow between said ports within the valve by controlling pivotal displacement of the actuating plate, and yieldable overtravel means forming a reaction mem-' her for said actuating plate.
  • a hollow cylinder having regions of diifering inside diameters, and fluid ports therein, alternate regions being of substantially the same diameter, a piston reciprocally disposed in said cylinder, said piston having regions of difiering outside diameters corresponding to the regions of the cylinder,
  • an' hydraulic actuator control valve a hollow cylinder having regions of differing inside diameters, and fiuid ports therein, alternate regions being of substantially the same diameter, a piston reciprocably disposed in said cylinder, said piston having regions of differing outside diameters corresponding'to the regions of the'cylinder, means seming said piston and said cylinder and resiliently mounting said piston coaxially within said cylinder for resilient axial displacement, a pivotal actuating plate coupled to the piston, displacementisensing means coupled to the actuating plate to displace the'piston upon displacement of the displacement sensing means to control fluid flow through the valve, and overtravel meansforming a fulcrum for said actuating plate and yielding-upon overtravel of said piston effected by displacement thereof" by said displacement sensing means.
  • a servovalve comprising abousing having a plurality of abutting housing segment plates'withinsaid housing in engagement withi'thewall thereof and having respectively different size axially extending apertures therein andsecured together with the apertures coaxially arranged, the apertures in alternate segment plates being 7 of the same dimensions, apiston resiliently mounted for axial reciprocable movement along theapertures in saidhousing segment plates, saidpiston being comprised of segments of difierent dimensions corresponding; to the apertures in said housing segment plates and being alternately of the samedimensions, radial ports in said segment plates, radial ports in said housing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Multiple-Way Valves (AREA)
  • Fluid-Driven Valves (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Actuator (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
US51096955 1955-05-25 1955-05-25 Servo-valve Expired - Lifetime US2839079A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US51096955 US2839079A (en) 1955-05-25 1955-05-25 Servo-valve
GB538356A GB792748A (en) 1955-05-25 1956-02-21 Improvements in or relating to fluid-control valves
DE2050598A DE2050598C3 (de) 1955-05-25 1970-10-15 Vorrichtung zum Durchschleusen radioaktiv kontaminierter Flüssigkeiten und/oder Gase
DE19712110320 DE2110320C3 (de) 1971-03-04 Vorrichtung zum Durchschleusen radioaktiv kontaminierter Flüssigkeiten und/oder Gase
DE2128967A DE2128967A1 (de) 1955-05-25 1971-06-11 Stroemungsmittelkupplung, insbesondere zum schleusen kontaminierter medien
CH1478371A CH538084A (de) 1955-05-25 1971-10-11 Vorrichtung mit Absperrorganen zur Erstellung eines Strömungsweges für Flüssigkeiten und/oder Gase, insbesondere kontaminierte Flüssigkeiten und/oder Gase, von einem Raum in einen anderen Raum
IT5343371A IT939553B (it) 1955-05-25 1971-10-13 Dispositivo per il trasferimento di fluidi mediante chiuse in particolare liquidi e o gas conta minati
SE1305471A SE381945B (sv) 1955-05-25 1971-10-14 Delbar stromningsmediekoppling for uppsettande av en stromningsveg mellan tva rum for slussning av kontaminerade medier fran det ena rummet till det andra
GB4816471A GB1302330A (xx) 1955-05-25 1971-10-15
FR7138150A FR2113166A5 (xx) 1955-05-25 1971-10-15
US3790128D US3790128A (en) 1955-05-25 1971-10-21 Device for transferring fluids
DE2212176A DE2212176A1 (de) 1955-05-25 1972-03-14 Stroemungsmittelkupplung, insbesondere zum schleusen kontaminierter medien
US3785404D US3785404A (en) 1955-05-25 1972-06-06 Device for the flow control of media, particularly contaminated liquids and/or gases

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US51096955 US2839079A (en) 1955-05-25 1955-05-25 Servo-valve
DE2050598A DE2050598C3 (de) 1955-05-25 1970-10-15 Vorrichtung zum Durchschleusen radioaktiv kontaminierter Flüssigkeiten und/oder Gase
DE19712110320 DE2110320C3 (de) 1971-03-04 Vorrichtung zum Durchschleusen radioaktiv kontaminierter Flüssigkeiten und/oder Gase
DE2128967A DE2128967A1 (de) 1955-05-25 1971-06-11 Stroemungsmittelkupplung, insbesondere zum schleusen kontaminierter medien

Publications (1)

Publication Number Publication Date
US2839079A true US2839079A (en) 1958-06-17

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Family Applications (2)

Application Number Title Priority Date Filing Date
US51096955 Expired - Lifetime US2839079A (en) 1955-05-25 1955-05-25 Servo-valve
US3790128D Expired - Lifetime US3790128A (en) 1955-05-25 1971-10-21 Device for transferring fluids

Family Applications After (1)

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US3790128D Expired - Lifetime US3790128A (en) 1955-05-25 1971-10-21 Device for transferring fluids

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US (2) US2839079A (xx)
CH (1) CH538084A (xx)
DE (2) DE2050598C3 (xx)
FR (1) FR2113166A5 (xx)
GB (2) GB792748A (xx)
IT (1) IT939553B (xx)
SE (1) SE381945B (xx)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2912010A (en) * 1957-06-04 1959-11-10 United Aircraft Corp Frictionlessly mounted fluid poppet valve with balanced dynamic fluid forces and static pressure forces
US3145588A (en) * 1958-08-20 1964-08-25 Precise Products Corp Drilling machine with a fluid pressure feed motor
US3206837A (en) * 1958-11-07 1965-09-21 Stanley H Holmes Method of manufacturing a reciprocal four-way spool valve
US3790128A (en) * 1955-05-25 1974-02-05 Argus Gmbh Device for transferring fluids
US5133386A (en) * 1989-04-21 1992-07-28 Magee Garth L Balanced, pressure-flow-compensated, single-stage servovalve
CN104061350A (zh) * 2014-06-06 2014-09-24 中国煤炭科工集团太原研究院有限公司 气动自锁开关阀
US11214375B2 (en) * 2017-05-31 2022-01-04 Hamilton Sundstrand Corporation Spring sealed pneumatic servo valve

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2259429C2 (de) * 1972-12-05 1982-06-03 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Kupplung zum lösbaren Anschluß eines an der Innenseite radioaktiv kontaminierten Schlauches mit darinliegendem Doppelschlauch an ein geschlossenes Containment
US4209040A (en) * 1978-09-01 1980-06-24 W-K-M Wellhead Systems, Inc. Seal means for high pressure control valves
US4281252A (en) * 1978-11-27 1981-07-28 Technical Operations, Inc. Coupling apparatus for portable radiography systems
DE3346069C2 (de) * 1983-12-21 1986-07-31 Uhde Gmbh, 4600 Dortmund Rohrverbindung mit fernbetätigbaren Festlege- und Löseeinrichtungen
US8707559B1 (en) 2007-02-20 2014-04-29 Dl Technology, Llc Material dispense tips and methods for manufacturing the same
US8864055B2 (en) 2009-05-01 2014-10-21 Dl Technology, Llc Material dispense tips and methods for forming the same
US9725225B1 (en) 2012-02-24 2017-08-08 Dl Technology, Llc Micro-volume dispense pump systems and methods
JP5980959B2 (ja) * 2013-01-09 2016-08-31 ジョン ハ パク ビールの泡噴出及びビールストーン生成防止装置
EP3006793B1 (de) * 2014-10-10 2017-03-15 HAWE Hydraulik SE Schieberventil mit Verdrehsicherung
US9720425B2 (en) * 2015-10-08 2017-08-01 The Procter & Gamble Company Low splash fluid shutoff valve assembly
CN105971966B (zh) * 2016-07-18 2019-01-11 天津优瑞纳斯液压机械有限公司 一种能往复移动的刚性导油装置
US11746656B1 (en) 2019-05-13 2023-09-05 DL Technology, LLC. Micro-volume dispense pump systems and methods

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1575771A (en) * 1924-03-27 1926-03-09 Walter H Riley Three-way valve
US2075600A (en) * 1934-01-09 1937-03-30 Union Carbide & Carbon Corp Valve
GB586501A (en) * 1944-12-11 1947-03-20 Heywood Compressor Company Ltd Improvements in change-over valves
US2563423A (en) * 1951-08-07 Spring device
US2620823A (en) * 1947-07-08 1952-12-09 Cincinnati Milling Machine Co Tracer valve mechanism with dashpot
US2624585A (en) * 1951-02-19 1953-01-06 Automatic Switch Co Four-way valve
US2658523A (en) * 1948-10-11 1953-11-10 Frederick H Johnson Valve structure
US2696196A (en) * 1949-02-18 1954-12-07 Denison Eng Co Control valve for hydraulic apparatus
US2699756A (en) * 1950-09-15 1955-01-18 Leonidas C Miller Reciprocating pneumatic actuator for tools

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2078402A (en) * 1935-09-20 1937-04-27 Mcdonough James Moore Releasable choke
US2694413A (en) * 1951-05-24 1954-11-16 Homestead Valve Mfg Co Protected seal for fluid valves
US2709566A (en) * 1953-08-07 1955-05-31 Catawissa Valve & Fittings Co Orifice union for pipe lines
US2839079A (en) * 1955-05-25 1958-06-17 Stanley H Holmes Servo-valve
CH352205A (de) * 1957-08-21 1961-02-15 Balass Valentin Rohrleitungskupplung
US3324879A (en) * 1965-10-22 1967-06-13 Frederick Robertson Faucet valve with stationary inlet tube

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563423A (en) * 1951-08-07 Spring device
US1575771A (en) * 1924-03-27 1926-03-09 Walter H Riley Three-way valve
US2075600A (en) * 1934-01-09 1937-03-30 Union Carbide & Carbon Corp Valve
GB586501A (en) * 1944-12-11 1947-03-20 Heywood Compressor Company Ltd Improvements in change-over valves
US2620823A (en) * 1947-07-08 1952-12-09 Cincinnati Milling Machine Co Tracer valve mechanism with dashpot
US2658523A (en) * 1948-10-11 1953-11-10 Frederick H Johnson Valve structure
US2696196A (en) * 1949-02-18 1954-12-07 Denison Eng Co Control valve for hydraulic apparatus
US2699756A (en) * 1950-09-15 1955-01-18 Leonidas C Miller Reciprocating pneumatic actuator for tools
US2624585A (en) * 1951-02-19 1953-01-06 Automatic Switch Co Four-way valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3790128A (en) * 1955-05-25 1974-02-05 Argus Gmbh Device for transferring fluids
US2912010A (en) * 1957-06-04 1959-11-10 United Aircraft Corp Frictionlessly mounted fluid poppet valve with balanced dynamic fluid forces and static pressure forces
US3145588A (en) * 1958-08-20 1964-08-25 Precise Products Corp Drilling machine with a fluid pressure feed motor
US3206837A (en) * 1958-11-07 1965-09-21 Stanley H Holmes Method of manufacturing a reciprocal four-way spool valve
US5133386A (en) * 1989-04-21 1992-07-28 Magee Garth L Balanced, pressure-flow-compensated, single-stage servovalve
CN104061350A (zh) * 2014-06-06 2014-09-24 中国煤炭科工集团太原研究院有限公司 气动自锁开关阀
CN104061350B (zh) * 2014-06-06 2016-08-03 中国煤炭科工集团太原研究院有限公司 气动自锁开关阀
US11214375B2 (en) * 2017-05-31 2022-01-04 Hamilton Sundstrand Corporation Spring sealed pneumatic servo valve

Also Published As

Publication number Publication date
US3790128A (en) 1974-02-05
DE2128967A1 (de) 1973-01-04
DE2110320A1 (de) 1972-09-14
GB792748A (en) 1958-04-02
CH538084A (de) 1973-06-15
IT939553B (it) 1973-02-10
FR2113166A5 (xx) 1972-06-23
DE2110320B2 (de) 1975-02-20
DE2050598A1 (de) 1972-04-20
GB1302330A (xx) 1973-01-10
DE2050598B2 (xx) 1974-10-17
DE2050598C3 (de) 1975-08-14
SE381945B (sv) 1975-12-22

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