US2889851A - Selective fluid-distributing device - Google Patents

Selective fluid-distributing device Download PDF

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Publication number
US2889851A
US2889851A US51023355A US2889851A US 2889851 A US2889851 A US 2889851A US 51023355 A US51023355 A US 51023355A US 2889851 A US2889851 A US 2889851A
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US
United States
Prior art keywords
enclosure
valves
valve
pressure
fluid
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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
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English (en)
Inventor
Audemar Pierre
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Alsacienne de Constructions Mecaniques SA
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Alsacienne de Constructions Mecaniques SA
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • 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
    • 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
    • Y10T137/87056—With selective motion for plural valve actuator
    • Y10T137/87064—Oppositely movable cam surfaces

Definitions

  • the main object of the invention is to provide a double pressure tluid distributor with a single control lever adapted to selectively assume one out of four predetermined positions in order to secure respectively:
  • the distributor according to the present invention is mainly constituted by two pairs of valves mounted in a uid tight body in communication with both enclosures, with the source of pressure fluid and with a zone of low pressure, and each adapted to be opened by a push rod, and a control lever adapted to operate said push rods so as to establish the communications which correspond to the four aforesaid combinations.
  • Figure l is a longitudinal section of a distributor according to the invention in its neutral position.
  • Figures 2, 3 and 4 show, on a smaller scale, the same distributor in three diierent positions, namely a position in which it provides for the admission of pressure fluid into a first enclosure connected with the distributor, a position in which said pressure iluid is directed out of said enclosure, a second enclosure being connected to an exhaust port in each of these two aforesaid positions, and finally a position in which pressure fluid is admitted into the second enclosure while the rst enclosure is cnnected to the exhaust, and
  • Figure 5 is a fragmentary section taken on the line 5-5 of Figure l, on a larger scale.
  • the distributor according to the invention comprises a single body 1 having six cylindrical recesses 2, 3, 4, v5, ⁇ 6, 7, the perforated bottoms of which serve as seats for ball valves 8, 9, 10, 11, 12, 13 urged toward their respective seats by springs such as the spring indicated at 16 which bears at one end against the ball valve 13 and at its other end against the inner face of a screw threaded plug 17 which ts Patent closes the recess 7. All the valves have a similar structure and operate in the same manner.
  • Both valves 8 and 9 are inlet valves the upstream side of which communicates with a pipe 21 into which a pump 22 is adapted to deliver a fluid under pressure, for instance oil, from a tank 23 through a pipe 24.
  • Both valves 10 and 11 are exhaust valves, the downstream side of which communicates with the tank 23 through a pipe 25 and the valves serve for returning the oil back to the tank.
  • Both valves 12 and 13 are check-valves, the upstream side of which communicates with the downstream side of the inlet valves 8 and 9 respectively, through channels 26 and 27 drilled in the body 1 and closed by screw threaded plugs 28.
  • the downstream side of the check-valves 12 and 13 communicates with the upstream side of the adjacent exhaust valves 10 and 11 through channels 31 and 32 respectively.
  • the upstream side of the exhaust valves 10 and 11 also communicates with two utilization enclosures 50, 51 through pipes 33 and 34 respectively, so that said pipes are adapted to be placed into communication with the pipe 21 which serves for admitting pressure uid through the inlet valves 8 and 9 and the corresponding check-valves 12 and 13.
  • the check-valves 12 and 13 are operated only by the pressure of the fluid, Whereas the other four valves are adapted to be selectively operated by push-rods 36, 37, 38, 39 mounted for sliding movement in corresponding bores of the body 1 and capable of pushing the balls against the action of their respective return springs in order to remove the Valves from their seats.
  • the pushrods cooperate with a single control lever 42 pivoted on a spindle 43 (see also Figure 5) which is journalled in the body 1 inside a bore 44 closed by a screw threaded plug 45.
  • the control lever 42 may be operated through a control arm 46 secured to one end of the spindle 43 which extends out of the body 1 through two bores each provided with a sealing device 43.
  • the lengths of the various push-rods are such that, when the lever 42 assumes the position represented in Figure 1, i.e. on the axis of the bore 44 of the body, the three push-rods 36, 38 and 39 are in contact with said lever, or, otherwise stated and more speciiically, both push rods 36 and 38 are nearly in contact with the lever 42 in order to allow the balls 8 and 10 to rest against their seats, whereas the push-rod 39 is positively pushed by the lever 42 in order to keep the ball 11 away from its seat.
  • the pusher rod 37 is short enough for the valve 9 not being operated upon, the lever 42 being rocked an angle a (see Figure 3) counterclockwise (looking at the drawing), an angle which, however, is suiiicient for permitting actuation of the valve 10. Furthermore, the arrangement is such that when the lever 42 assumes the position which is shown in Figure 3, the valve 11 does not yet rest upon its seat. v
  • a pressure gage 48 has been represented as mounted on the pipe 33 in order to indicate the value of the pressure that prevails within the enclosure 5t).
  • the control lever 42 is rocked clockwise (looking at the drawing) in order to be brought into the inclined position illustrated in Figure 2.
  • the inlet valve 8 is operated under the action of the pusher rod 36 and some pressure oil flowing from the feed pipe 21 then iiows through said valve, channel 27, check-valve 6 and pipe 33 in order to reach the enclosure 50.
  • the pressure that prevails in the enclosure S0 then rises and, when the desired pressure is reached, the control lever 42 is brought back to its neutral horizontal position of Fig. l.
  • the enclosure 51 maintains its communication with the tank 23 through the pipe 34, open valve 11 and return pipe 25.
  • the enclosures 50 and 51 are constituted by the two chambers of a double acting jack, the pressure fluid contained in the second of said chambers is thus freely exhausted and does not interfere with the admission of lluid into the former.
  • the control lever is rocked an angle ot in the opposite direction, as indicated in Figure 3, so that only valve 10 is opened while valve 11 does not close. A portion of the fluid contained in the enclosure 50, thus, may be discharged through pipe 33, open valve 10 and return pipe back to the tank 23. It is to be pointed out that, in this position of the control lever, the enclosure 51 communicates with the tank 23, since pipe 34 is itself in communication with the return pipe 25 and tank 23 through the valve 11 which is kept open. Under such conditions, and still in the case of a double acting jack, no negative pressure likely to hinder the discharge of fluid from the first enclosure 5t) would be created. After the press-ure in the enclosure 50 has dropped to the desired value, or else, after the desired amount of fluid has been removed, the lever is brought back to its horizontal position (Fig. l) in order again to lock the inlet circuits to the enclosure 50.
  • the distributor of the invention could be used with any suitable fluid other than oil, either a liquid or a gas, and the pressures prevailing in the enclosures 50, 51 may be independent or, on the contrary, a function of each other (double acting jack).
  • a distributor for selectively feeding pressure fluid into one of two enclosures, while controlling escape of fluid from the other one comprising, in combination, a fluidtight body, first and second spring-loaded inlet valves housed Within said body, fluid-conducting means leading to said inlet valves and adapted to be simultaneously connected with a source of pressure fluid, Huid-conducting means leading from said inlet valves and adapted to be separately connected to said enclosures, a rst and a second exhaust spring-loaded valves housed within said body, fluid-conducting means leading to said exhaust valves and adapted to be separately connected with said enclosures and fluid-conducting means leading hom said exhaust valves and opening outside said body, a 4-position control lever pivotally mounted in said body and operable from outside, and linkage means to operatively connect said control lever with said valves to selectively establish one of four valve congurations viz, a rst conguration in which only said second exhaust-valve is open, a second configuration in which only said first inlet valve

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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)
  • Mechanically-Actuated Valves (AREA)
US51023355 1954-05-31 1955-05-23 Selective fluid-distributing device Expired - Lifetime US2889851A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1043736X 1954-05-31

Publications (1)

Publication Number Publication Date
US2889851A true US2889851A (en) 1959-06-09

Family

ID=9590730

Family Applications (1)

Application Number Title Priority Date Filing Date
US51023355 Expired - Lifetime US2889851A (en) 1954-05-31 1955-05-23 Selective fluid-distributing device

Country Status (3)

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US (1) US2889851A (fr)
DE (1) DE1043736B (fr)
FR (1) FR1101471A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977764A (en) * 1959-04-15 1961-04-04 Gen Motors Corp Actuator and control system therefor
US2982302A (en) * 1959-10-08 1961-05-02 Westinghouse Electric Corp Fluid control apparatus
US3669146A (en) * 1970-01-23 1972-06-13 Cam Gears Ltd Power assisted steering system
US20030111117A1 (en) * 1999-12-13 2003-06-19 Horn Edward R. Valve arrangement including release valve

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1205676B (de) * 1956-10-09 1965-11-25 Air Equipement Soc Vorrichtung zur Steuerung der Luftzufuhr zu einem eine Aufzugwinde antreibenden Druckluftmotor
US3129725A (en) * 1957-02-08 1964-04-21 Clark Equipment Co Leveling valve
DE1248403B (de) * 1961-05-04 1967-08-24 Leo Riedl Vorrichtung zum Steuern hydraulischer Arbeitszylinder
DE1261724B (de) * 1963-04-23 1968-02-22 Wagner Electric Corp Steuereinrichtung mit zwei gleichachsigen Einzelventilen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751276A (en) * 1920-10-09 1930-03-18 Transp Ation Devices Corp Power mechanism for controlling the reverse gears of locomotives
US2293555A (en) * 1938-07-08 1942-08-18 Mercier Jean Distributor for fluid operated apparatus
GB587159A (en) * 1944-04-05 1947-04-16 Adel Prec Products Corp Control valve for fluid actuated devices
GB598078A (en) * 1945-06-26 1948-02-10 E M B Co Ltd Improvements relating to moulding and die casting machines
US2671433A (en) * 1952-12-15 1954-03-09 Bendix Aviat Corp Pressure flow controlled selfholding selector valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE48871C (de) * C. prött in Witten Anordnung der Steuerventile an hydraulischen Pressen zur Vorfüllung der Letzteren
DE545659C (de) * 1931-04-05 1932-03-04 Schloemann Akt Ges Ventilsteuerung mit Druckstufenschaltung fuer hydraulische Pressen
US2300338A (en) * 1940-10-03 1942-10-27 Florence Pipe Foundry & Machin Hydraulic press and the like
DE746101C (de) * 1940-12-19 1944-12-13 Hahn & Kolb Hydraulische Presse mit mehreren stufenweise ineinander angeordneten Kolben

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751276A (en) * 1920-10-09 1930-03-18 Transp Ation Devices Corp Power mechanism for controlling the reverse gears of locomotives
US2293555A (en) * 1938-07-08 1942-08-18 Mercier Jean Distributor for fluid operated apparatus
GB587159A (en) * 1944-04-05 1947-04-16 Adel Prec Products Corp Control valve for fluid actuated devices
GB598078A (en) * 1945-06-26 1948-02-10 E M B Co Ltd Improvements relating to moulding and die casting machines
US2671433A (en) * 1952-12-15 1954-03-09 Bendix Aviat Corp Pressure flow controlled selfholding selector valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977764A (en) * 1959-04-15 1961-04-04 Gen Motors Corp Actuator and control system therefor
US2982302A (en) * 1959-10-08 1961-05-02 Westinghouse Electric Corp Fluid control apparatus
US3669146A (en) * 1970-01-23 1972-06-13 Cam Gears Ltd Power assisted steering system
US20030111117A1 (en) * 1999-12-13 2003-06-19 Horn Edward R. Valve arrangement including release valve
US6997210B2 (en) * 1999-12-13 2006-02-14 Aladdin Engineering & Manufacturing, Inc. Valve arrangement including release valve

Also Published As

Publication number Publication date
DE1043736B (de) 1958-11-13
FR1101471A (fr) 1955-10-06

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