US3237641A - Preselective command device - Google Patents

Preselective command device Download PDF

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US3237641A
US3237641A US305423A US30542363A US3237641A US 3237641 A US3237641 A US 3237641A US 305423 A US305423 A US 305423A US 30542363 A US30542363 A US 30542363A US 3237641 A US3237641 A US 3237641A
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valve
piston
command
preselective
pressure
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US305423A
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Audemar Pierre
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Alsacienne de Constructions Mecaniques SA
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Alsacienne de Constructions Mecaniques SA
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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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
    • F16H61/0274—Control units where shifting is directly initiated by the driver, e.g. semi-automatic transmissions
    • 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
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-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
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • 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
    • 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
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/625—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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7107—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being mechanically linked
    • 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
    • F16H—GEARING
    • F16H2708/00—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes
    • F16H2708/24—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes with a preselection system, mainly semi-automatic, e.g. with automatic preselection, but controlled at the intended moment, with force amplification
    • 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
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86622—Motor-operated
    • Y10T137/8663—Fluid motor
    • 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
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated
    • Y10T137/87201—Common to plural valve motor chambers

Definitions

  • FIG. 2c PRESELECTIVE COMMAND DEVICE Filed Aug. 29, 1963 4 Sheets-Sheet 1 l FIG. 2c:
  • the instant invention concerns a iiuid pressure operated device for the preselective control or command of an apparatus including a pressure operated member moving between two limiting positions and more particularly preselectively operable means for the later and subsequent control of an hydraulic or pneumatic valve which directly causes operation of the pressure operated member.
  • the device according to the invention serves to maintain the valve member, for example, a valve slide, locked in either of the two positions it had previously been placed by the preselectively operable control means controlling its movement, so that said preselective means may be activated in advance but will only become operative (that is, actually move the Valve member component under command) after the device has received a momentary signal causing the unlocking of said valve member component.
  • a device according to the invention is characterized in that this signal is in the form of a temporary or momentary lowering, or preferably, a complete cut-oi, of the iiuid pressure in at least that part of the pneumatic or hydraulic circuit controlled by the valve(s) preselectively under command.
  • the mobile throttle component of said valve is mechanically linked to a piston running in a cylinder.
  • the cylinder is normally in communication with a source of iiuid under pressure, in such a manner as to hold the piston stationary in the cylinder at one or the other of the ends of the course of travel thereof under the elfect of the pressure exerted on one of the faces of said piston, whereby the throttle component of the valve is normally locked in one or the other of these positions.
  • the fluid pressure and thev effective surface area of the piston are chosen so that the fluid locking action will not be overridden (with the resulting movement of the mobile throttle component to its other position) by the force exerted on said component of the valve by the command means, this arrangement allowing said command means to be preselectively activated without its having an immediate effect.
  • the device according to the invention includes as well means for temporarily reducing or cutting-off the normal pressure exerted by the fluid on the face of the abovementioned piston so as to unlock the throttle component of the valve and free it to respond to the means of command, if it has been previously activated.
  • the locking piston and the throttle component are actually made an integral part of a piston slide which runs in the body of a valve, a part of which body serves as the above-mentioned cylinder.
  • one or the other of the 3,237,641 Patented Mar. 1, 1966 lCe faces of the locking piston is normally subject to the iluid pressure prevailing in at least one of the parts of the circuit controlled by the valve so that the unlocking of the piston slide may simply be accomplished by temporarily venting all or part of the above circuit to a drain receptacle.
  • the results of this combination are simple, economical preselective command valves, the invention of course contemplating as well the valves themselves.
  • the preselective valves conforming to the invention find a particularly interesting application in the control of gear boxes, as for example those found in machine tools or vehicles, with each of the said valves controlling the feeding or draining of iuid under pressure of an hydraulic jack which in turn activates the shifter device or analoguous selector device of the gear box.
  • the simultaneous unlocking of all of the valves may be realized by opening a single unlock valve which operates all of the valves and allows them to respond to what ever command signals may have been preselectively applied.
  • FIGURES 1 and 1a are schematic representations of a preselective control or command device in accordance with the invention as applied to a rotating control Valve.
  • FIGURES 2 and 2a show a longitudinal cut-away of an embodiment as applied to a slide valve with electromagnetic command means.
  • FIGURE 3 is a cut-away view of another variant in construction.
  • FIGURES 4, 4a and 5 represent another embodiment of a preselective valve according to the invention with hydraulic command means, in several of its operating positions.
  • FIGURE 6 is an hydraulic schematic representation of the preselective command means of a gear box including automatic command of the couplings associated with said box by means of a plurality of valves conforming to the invention.
  • FIGURE 7 represents a cross-section of a command block which groups four preselecting valves in the same valve body.
  • FIGURE l illustrates the fact that the invention is applicable to all types of valves, be they hydraulic or pneumatic, although the most advantageous applications concern those valvesin which the valve member moves axially.
  • the invention will be described as it applies to hydraulic circuits, for purposes of simplification, although it is to be understood that it is equally applicable to all pressurized fluid circuits.
  • a rotary three-way valve 2 is shown arranged to con, neet a hydraulic jack 3, either with a pipe 6 carrying fluid under pressure or a discharge pipe S.
  • the valve 2 is mechanically linked to a piston 10 by a transmission system comprising a piston rod 12 provided with a rack 14 engaging a pinion (not shown) connected to the valve 2 for rotation therewith.
  • the Ipiston 10 is slidable in ⁇ a cylinder 16 which is normally in communication with a source (not shown) of pressure fluid through a pipe 18-18" through a valve 20, called the unlock valve, which allows this communication to be momentarily interrupted whileY simltaneously providing free commnication between the two end chambers 36 and 34 at opposite sides of the piston through pipes 22 and 24.
  • the preselectively operable control means acting on the valve 2 is i'llustratively shown as a manually operable push button 26 linked through a helical spring 28 to a piston rod 30 extending from the piston 10.
  • the jack 4 is under pressure and the valve 2 remains locked in a position which supplies pressure fluid to the jack due to the fact that the piston is positively held at Ione end of the cylinder 16 'by pressure uid admitted lthrough the valve 20 and the pipes 18, 18'.
  • the button 26 is held continuously pressed in the direction indicated 'by the arrow 32 Ibut the valve is held against operation by the locking action of the piston 10, and the sole result of pressing the button 26 is the compression of spring 2S.
  • the pressure of the fluid admitted into cylinder 16 and the surface area of the piston 10 are chosen in such a way as to insure that the hydraulic locking of the piston 10 will not ybe overcome by the vforce exerted by the button 26 through the spring 28.
  • the operation or non-operation of the jack 4 may thus -be preselected at any time lby appropriate positioning of the button 26, which is held in the preselected position by conventional means (not shown) and the preselected operation or non-operation will beco-me effective only when the locking valve 20 is momentarily rotated 90 to the position shown in FIG. 1a.
  • the piston 10 is unlocked, then, due to tthe force of the compressed spring 28 and/or the force exerted on the button 26 it slides freely to the right of the diagram, and the flu-id contained in chamber 34 of the cylinder is forced to the opposite chamber 36 'by the piston through pipe 24, valve 20 and pipe 22.
  • the valve 2 is thus rotated to the position as indicated in FIGURE la and jack 4 drains through pipe 8.
  • the locking valve 20 can then be returned to its initial position thus locking the piston 10 in place at the other end of the course of travel thereof and permitting another preselective inverse command of valve 2 by pulling on the button 26 in a direction contrary to arrow 32, which action will only take effect at the time of the momentary manipulation of locking valve 20.
  • pipe 6 may be joined to pipes 18 and 18.
  • a locking piston 10 sliding in a cylinder 16 is directly coupled, by its rod 12', to the slide 38 of a sliding valve.
  • the cylinder 16' which is closed by ends 40 and 42, is the prolongation of the valve body 44 which can be a cylinder open at one end.
  • the shoulders 46, 48 and 50 of said slide put a pressurized oil feed pipe 52 into communication with the drain pipe 54 which leads to one of the two ends of a double acting jack 4', which is the apparatus under command.
  • the slide puts a drain pipe 56 into communication with the conduit 58 at the other end of the jack 4.
  • electro-magnetic command means have been represented in FIGURE 2 consisting of an armature 64 linked to the slide :by a rod 66 4- controlled by one or "the other of the two solenoids 68 and 70. All other known means for controlling electrovalves may be used.
  • the pressurized oil again flows through pipe 52, the central portion of the valve body, pipe 58 and the right extremity of the jack 4' thereby forcing the piston to the left.
  • the oil forced out by the jack piston drains through pipes 54 and 56'.
  • the oil pressure equalizes in chamber 36' through pipe ⁇ 62 so as to maintain the slide locked in its new position.
  • the command means may be de-activated, that is, the solenoid 70 may Ibe de-energized (this operation being accomplished manually or automatically) and the valve is then ready to preselectively receive a new order.
  • FIGURE 3 represents a variant of the embodiment as revealed in FIGURE 2.
  • the locking piston 10' does not function as a double-acting jack, that is the locking pressure is not alternately applied to rst one piston face and then the other. Rather, to obtain the locking effect, the pressure is applied to the I exterior face of one or the other of the end pistons 10 and 50 of slide 38, the body 44 of the valve, following this variant, being closed at its two extremities by end walls 40 and 74 which determine the two locking chambers 36 and 76.
  • this modification eliminates the intermediary closure element 42 as shown in FIGURE 2 and replaces i-t with a closure element at the extremity of the valve body.
  • chamber 76- in FIG- URE 3 plays the same role as chamber 34 in FIGURE 2 and that it is connected by pipe 60 (analogous to pipe 60) to conduit 54 which leads to the apparatus under command (not represented).
  • valve command means as indicated in FIGURE 3 are electro-magnetic and elastic: a solenoid 70, when energized, tends to urge the armature 64, which is fixed to the slide, to the right while a helical compression spring 78 tends to urge the slide 38 to the left.
  • FIGURES 4, 4a and 5 reveal several positions of an alternate embodiment of a preselective command valve: conforming to the invention in which are combined, in. the interior of the same valve body 44', a hollow, dis-v tributor slide 38", a locking piston 10 and valve command means which are preferably of an hydraulic type, and include a movable piston 80 running in a cylinder 82, which cylinder is integral with the valve body.
  • the distributor slide 38 is, as in the variant as shown in FIG- URE 3, urged to the position represented in FIGURE 4 by a spring 78.
  • the preselective command valve controls the flow of pressurized oil into (FIGURE 4) or out of (FIGURE,
  • chamber 84 of one or several jacks 4 in which jacks the opposing charnber 84' can normally be subject to the oil pressure through pipe 90 (as in the case of a differential jack piston as shown in FIGURES 4 and 5).
  • the pressurized fluid preferably oil
  • the pressurized fluid flows from its source via pipes 52-52 to the interior of the distributor slide 38 through orifices 92 and then to the jack 4 through pipe 86.
  • the drain pipe 94 is closed olf by the cylindrical portion 96 of the slide-distributor and the high pressure found in the body of the valve is applied against the right face of piston in order to maintain the slide locked.
  • the valve may therefore be preselectively commanded by admitting command pressure into chamber 82 through pipe 98.
  • a clutch 100 can be activated by a jack 102 supplied with uid by pipe 104 branched onto pipe 52.
  • the clutch While the unlock valve 20' is in its normal position, the clutch is engaged but disengages when valve 20 Iis momentarily turned to the unlock Iposition as shown in FIGURE 4a by draining through pipes 72 and 104.
  • the clutch disengages during the intermediate phase of the distributor slide displacement, that is during the time the gears are disengaging or engaging, as dictated by the movements of the command jack 4, and a delay in the clutch action may be introduced if necessary, as follows.
  • FIGURE 6 is a schematic representation of a hydraulic preselective command circuit conforming to the invention as applied to a three speed gear box 106 in which the chan-ges in ratios are effected by three jacks 41-42-43.
  • the three valves 441-442-443-contro11ing the operation of these jacks are, for example, of the type as shown in FIGURES 4 and 5 and the Ipipes associated with them carry the same reference numbers, with the indices 1-2-3 as in the diagram.
  • a single unlock valve 20 is connected to the three valves by pipe 52 which branches out into three directions 521-522-5211.
  • the combination is supplied with pressurized oil by a pump 108 which draws the oil from a tank 110 and charges an oleo-pneumatic accumulator 112.
  • the pressurized oil fed by pipe 114 serves generally to supply the preselective command means of the valves (pistons 6 and cylinders -82 in (FIGURE 5') through a selector 116 interposed between pipe 118 and the three pipes 98-98-98, feeding the command pressure to the valves 44.
  • the drain pipes 72 and 94 (identical to those indicated in FIGURES 4 and 5) return the oil to the tank 110.
  • the function of the valves has been suticiently described in connection with the preceding embodiments so that it suices to mention that the sole momentary operation of the unlock valve 20 brings labout a change in position in all valves having received a preselective pressure signal opposing the respective position they Occupied at the time and the automatic return (due to the eifect of spring 78) to the position as lshown in FIG- URE 4 of the valves which have received nopressure signal and which previously occupied the position as indicated in FIGURE 5.
  • the selector 116 can be disposed in the form of a combiner to control the movements of the gear trains and successively change the gear ratios.
  • FIGURE 7 is a cross-section view of a block of four preselective command valves conforming to the invention and capable of controlling, for example, a four-speed gear box.
  • Each of the valves may include a hollow, distributor slide 381 38', the whole central portion of which 101 constitutes the locking piston.
  • the slides connect control pipes 861, 862, with either the oil feed line 52 or the dra-in pipe 56.
  • the jack controlled by the first and fourth valves are in the drain position while the jacks controlled by the second and third valves are under pressure.
  • valves The control of the valves is accomplished hydraulically, as in FIGURES 4 and 5 Where the piston plungers 801, 802-which run in the command cylinders 821, S22-themselves are fed with pressurized oil by pipes 981, 982.
  • the piston rods 1301, 1302 can act on slides 381', 382 simply by pushing aginst them in opposition to the force of springs '781, 782 .thus avoiding any problems in centering the slides or piston guides 801, 802
  • Such a valve block may be economically realized in three parts.
  • the closing component of the preselective valve following the invention may take a form other than the slides shown and may be, for example, a doubleseated valve, a rotating plug, etc.
  • a two-position valve, with preselective command, for the control of a pressurized fluid circuit comprising .at least a piston running in a cylinder, said piston being mechanically linked to the movable selector component of said valve, said cylinder being normally in communication with a pressurized fluid source which selectively acts on one of the faces of said piston to hold it in one of the two positions at the ends of its course of travel where said piston locks said movable component in one of its two positions against the force of command means controlling said movable component, said valve including releasing means for freeing said movable component in response to the interruption of the above-mentioned communication between the fluid source and the face of said piston subjected to pressure and for re-establishing the communication between said source and the other face of said piston when said movable component has changed position un-der the effect of said command means. so as to lock said movable component in its new position.
  • valve as claimed in claim l wherein the movable selector component ⁇ consists of a slide running in a valve casing, said slide being an integral part of at least a piston sliding in a part of said valve casing constituting a locking cylinder for said piston.
  • command means of the closing component are hydraulic or pneumatic, said means including an additional piston integral with the above-mentioned slide and running in another part of the valve casing in which the command pressure may be preselectively established or interrupted.
  • a preselective command valve having control over a hydraulically activated apparatus, comprising a piston running in a valve casing, said piston being normally ⁇ locked in one of two positions by uid pressure on one of its faces, said uid pressure being sufficient to overcome in the said pistons initial position, a hydraulic, preselective command signal on the opposite end of said piston; a two-position releasing valve in the feed line of said fluid which may .be momentarily manipulated so as to cut-off the source of ⁇ fluid pressure on the initial locking face of said piston and temporarily vent the chamber associated with said face to a drain pipe thereby freeing the piston to respond Vto the preselective command signal; a spring tending to urge the piston back to its original position against the greater hydraulic locking force exerted on the reverse face of said piston by the fluid pressure which is newly established in said chamber by returning said two-position valve to its initial position, thereby holding said piston in its alternate position; and a hollow, distributor slide, being the prolongment of said piston, fitted with orilices which
  • a preselective fluid pressure control device comprising: a control valve including a control element movable between two limiting positions; duct means connected to supply pressure uid to said control valve, said control valve including means for continuously applying said pressure uid to said control element to hold said control element positively in either of said two limiting positions; utilization means connected to said control valve to receive said pressure fluid therefrom, movement of said control element from one of said limiting positions to the other selectively controlling the supply of pressure fluid to said utilization means; locking valve means serially included in said duct means, said locking valve means normally permitting said pressure fluid to be continuously supplied to said control valve, actuation of said locking valve means interrupting said supply whereby said control element is freed to move between said limiting positions and said supply is shut olf from said utilization means; and preselective means acting on said control element and selectively operable with said locking valve in its normal position continuously to urge said control element to move from one of said limiting positions to the other or to cause the same to remain stationary in either of said limiting positions, whereby momentary
  • a preselectively controllable fluid pressure operated device comprising: a plurality of Huid pressure operated jacks; a separate control valve connected to supply pressure fluid to each of said jacks, each control valve comprising a control element movable between two limiting positions; duct means connected to supply pressure fluid simultaneously to all of said control valves, each control valve including means for continuously applying said pressure fluid to its control element to hold said control element positively in either of said two limiting positions, the operation of each jack being selectively controlled by the position of the control element within the control valve to which it is connected; locking valve means serially included in said duct means, said locking valve means normally permitting said pressure uid to be supplied continuously to all of said control valves, actuation of said locking valve means interrupting said supply whereby every control element is freed to move between said limiting positions and said supply is shut ofic from all of said jacks; and preselective lmeans operable with said locking valve in its normal position and acting on said control elements to urge preselected ones of said elements continuously to move from one
  • a device further comprising a gear box controlled by said jacks.
  • a device further comprising: a gear box controlled by said jacks; a clutch connected to said gear box; and fluid pressure operated clutch control means connected to said duct means intermediate said locking valve means and said control valves, said clutch control means continuously holding said clutch engaged with said locking valve means in its normal position, said clutch being disengaged during actuation of said locking valve means.
  • a device further comprising uid ow restricting means interposed between said Clutch control means and said duct means for delaying re-engagement of said clutch upon restoration of said locking valve means to its normal position.
  • a device further comprising uid pressure operated brake means connected to said duct means intermediate said locking Vaive means and said control valves, said brake means braking said gear box during disengagement of said clutch.

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US305423A 1962-09-19 1963-08-29 Preselective command device Expired - Lifetime US3237641A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR909826A FR1347038A (fr) 1962-09-19 1962-09-19 Dispositif de commande présélective

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US3237641A true US3237641A (en) 1966-03-01

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367238A (en) * 1964-04-23 1968-02-06 Int Nickel Co Valve and method for operating mechanical tuyere puncher and the like
US3528454A (en) * 1968-11-29 1970-09-15 Gen Electric Stabilized hydro-mechanical pressure control valve
US3661059A (en) * 1970-02-19 1972-05-09 Chandler Evans Inc Fluid operated stepping motor
US3706322A (en) * 1971-03-22 1972-12-19 Carl M Carlson Valve
US3859791A (en) * 1973-07-09 1975-01-14 American Standard Inc Fluid operated hydraulically lapped control apparatus
USB410694I5 (fr) * 1973-10-29 1976-03-23
US4028997A (en) * 1975-05-02 1977-06-14 Zahnradfabrik Friedrichshafen Ag Motor vehicle steering
US4122864A (en) * 1974-05-31 1978-10-31 Bennes Marrel Selective and proportional hydraulic remote control device, in particular for handling and public work gears
US4551072A (en) * 1984-02-15 1985-11-05 Hibar Systems Limited Fluid pressure operated actuator
US4565116A (en) * 1982-10-14 1986-01-21 Karl Hehl Hydraulic speed controls for die closing unit of injection molding machine
FR2706567A1 (fr) * 1993-06-09 1994-12-23 Rexroth Mannesmann Gmbh Soupape hydraulique, notamment pour la commande d'un dispositif d'actionnement hydraulique dans un système de stabilisation de roulis d'un véhicule automobile.
US20060021663A1 (en) * 2004-07-27 2006-02-02 In-Lhc Pressure-regulator servovalve with reduced leakage rate
US11035372B2 (en) * 2018-04-04 2021-06-15 Safran Aircraft Engines Pneumatic controller for controlling a bleed valve
US11428246B2 (en) * 2018-02-26 2022-08-30 Kabushiki Kaisha Toshiba Steam valve driving apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU187363B (en) * 1981-04-16 1985-12-28 Autoipari Kutato Intezet Pneumatic working cylinder woth four piston particularly for stage selector mechanism of motor vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621676A (en) * 1950-11-16 1952-12-16 Gen Electric Hydraulic pilot valve with reaction compensating means
US2758570A (en) * 1953-08-19 1956-08-14 Johanssons Press & Hejarverkty Device for effecting a dwell at the end positions of reciprocating elements
US2913005A (en) * 1956-07-23 1959-11-17 Hughes Tool Co Pilot-actuated control valve
US2981287A (en) * 1958-11-14 1961-04-25 American Brake Shoe Co Pilot operated valve mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621676A (en) * 1950-11-16 1952-12-16 Gen Electric Hydraulic pilot valve with reaction compensating means
US2758570A (en) * 1953-08-19 1956-08-14 Johanssons Press & Hejarverkty Device for effecting a dwell at the end positions of reciprocating elements
US2913005A (en) * 1956-07-23 1959-11-17 Hughes Tool Co Pilot-actuated control valve
US2981287A (en) * 1958-11-14 1961-04-25 American Brake Shoe Co Pilot operated valve mechanism

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367238A (en) * 1964-04-23 1968-02-06 Int Nickel Co Valve and method for operating mechanical tuyere puncher and the like
US3528454A (en) * 1968-11-29 1970-09-15 Gen Electric Stabilized hydro-mechanical pressure control valve
US3661059A (en) * 1970-02-19 1972-05-09 Chandler Evans Inc Fluid operated stepping motor
US3706322A (en) * 1971-03-22 1972-12-19 Carl M Carlson Valve
US3859791A (en) * 1973-07-09 1975-01-14 American Standard Inc Fluid operated hydraulically lapped control apparatus
USB410694I5 (fr) * 1973-10-29 1976-03-23
US3995530A (en) * 1973-10-29 1976-12-07 Gunn Robert D Shaking machine
US4122864A (en) * 1974-05-31 1978-10-31 Bennes Marrel Selective and proportional hydraulic remote control device, in particular for handling and public work gears
US4028997A (en) * 1975-05-02 1977-06-14 Zahnradfabrik Friedrichshafen Ag Motor vehicle steering
US4565116A (en) * 1982-10-14 1986-01-21 Karl Hehl Hydraulic speed controls for die closing unit of injection molding machine
US4551072A (en) * 1984-02-15 1985-11-05 Hibar Systems Limited Fluid pressure operated actuator
FR2706567A1 (fr) * 1993-06-09 1994-12-23 Rexroth Mannesmann Gmbh Soupape hydraulique, notamment pour la commande d'un dispositif d'actionnement hydraulique dans un système de stabilisation de roulis d'un véhicule automobile.
US20060021663A1 (en) * 2004-07-27 2006-02-02 In-Lhc Pressure-regulator servovalve with reduced leakage rate
US8418722B2 (en) * 2004-07-27 2013-04-16 In-Lhc Pressure-regulator servovalve with reduced leakage rate
US11428246B2 (en) * 2018-02-26 2022-08-30 Kabushiki Kaisha Toshiba Steam valve driving apparatus
US11035372B2 (en) * 2018-04-04 2021-06-15 Safran Aircraft Engines Pneumatic controller for controlling a bleed valve

Also Published As

Publication number Publication date
FR1347038A (fr) 1963-12-27

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