US2408799A - Shuttle valve - Google Patents

Shuttle valve Download PDF

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Publication number
US2408799A
US2408799A US47415543A US2408799A US 2408799 A US2408799 A US 2408799A US 47415543 A US47415543 A US 47415543A US 2408799 A US2408799 A US 2408799A
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Prior art keywords
valve
bore
casing
shuttle
seat
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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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Inventor
Joseph F Melichar
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PARKER APPLIANCE Co
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PARKER APPLIANCE CO
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Priority to US47415543 priority Critical patent/US2408799A/en
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Publication of US2408799A publication Critical patent/US2408799A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00Details of vessels or of the filling or discharging of vessels
    • F17C13/04Arrangement or mounting of valves
    • F17C13/045Automatic change-over switching assembly for bottled gas systems with two (or more) gas containers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382Constructional details of valves, regulators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/03Mixtures
    • F17C2221/031Air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107Single phase
    • F17C2223/0123Single phase gaseous, e.g. CNG, GNC
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/036Very high pressure (>80 bar)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04Methods for emptying or filling
    • F17C2227/041Methods for emptying or filling vessel by vessel
    • F17C2227/042Methods for emptying or filling vessel by vessel with change-over from one vessel to another
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/2496Self-proportioning or correlating systems
    • Y10T137/2559Self-controlled branched flow systems
    • Y10T137/2564Plural inflows
    • Y10T137/2567Alternate or successive inflows
    • Y10T137/2569Control by depletion of source
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/7722Line condition change responsive valves
    • Y10T137/7837Direct response valves [i.e., check valve type]
    • Y10T137/7866Plural seating

Description

I Get. 8,1946. J. F. MELICHAR 2,408,799

SHUTTLE VALVE Filed Jan. 50, 1943 Patented Oct. 8, 1946 SHUTTLE VALVE Joseph F. Melichar,

The Parker Appliance Ohio, a corporation of Cleveland, Ohio, assignor to Company, Cleveland,

Ohio

Application January 30, 1943, Serial No. 474,155

2 Claims.

The invention relates generally to valves and has for an object to provide a novel form of valve having two spaced coaxially arranged seats one adapted to communicate with a normal fluid pressure source and the other with an emergency fluid pressure source, a service part disposed intermediately of said seats and adapted to be conneoted with a motor or the like, and a shuttle valve selectively engageable at its ends with the two seats and adapted to be automatically shifted by the normal fluid pressure or the emergency fluid pressure, whichever is dominant, to direct the dominant fluid pressure to said service port.

Valve structures of the general type stated have been provided heretofore, but such structures have been somewhat difilcult and expensive to manufacture and limited in efliciency in operation due to their particular structural designs, and it is a purpose of the present invention to provide an improved valve structure of the type stated in which these defects are eliminated.

An object of the invention is to provide a valve structure of the character stated in which is included a spring detent member engageable with the shiftable valve element for yieldably maintaining shifted positions thereof and mounted in a plug removably secured in a bore in the valve casing coaxially aligned with the service port in the casing thus making it possible to form said port and bore by the making of a straight through bore in the casing, the valve seats also being coaxially aligned so that the chamber in which the valve element is shiftable also can be formed by the making of a straight through bore in the casing intersecting the first mentioned straight through bore.

Another object of the invention is to provide in the improved valve structure a shiftable valve element having non-circular ends disposed to provide pressure fluid flow passages for communicating with the service port and the particular open valve seat, each said end also having a recess in which a ball is loosely retained for self centering seating engagement with the adjacent valve seat.

With the above and other objects in view that will hereinafter appear, the nature of the invention will be more fully understood by following the detailed description, the appended claims and the several views illustrated in the accompanying drawing.

In the drawing:

Figure 1 is a somewhat diagrammatic view illustrating one practical manner of using the improved shuttle valve.

Figure 2 is a central longitudinal sectional view illustrating the shuttle valve.

Figure 3 is a detail View of the shuttle valve element per se, one end being shown in section.

Figure 4 is an end elevation of the valve element shown in Figure 3.

Figure 5 is a central longitudinal sectional view of the valve casing.

Figure 6 is an end elevation of the valve casing.

Figure 7 is a view similar to Figure 5 illustrating a slightly modified form of the valve casing.

Figure 8 is a central vertical cross section through the casing illustrated in Figure '7.

In the example of embodiment of the invention herein illustrated, the improved valve structure includes a casing which is substantially cruciform in shape so as to provide a central rectangular main body portion 5 and .two coaxially aligned leg extensions 6, each said leg extension being externally threaded at its end as at 1. The main body portion 5 is provided with a straight through axial bore 8 which is internally threaded at each end as at 9, and the casing also is provided with a straight through bore IE1 extending axially through the leg extensions 6. The bore l0 preferably, but not necessarily, is smaller than the bore 8. See Figures 2, 5 and 6.

A shuttle valve element H is longitudinally, shiftably mounted in the Valve casing and is provided with cylindrical end portions H. which are slide guided in the aligned portions of the bore ID disposed in the respective casing legs 6 in the manner best illustrated in Figure 2. The valve element is shaped in the manner best illustrated in Figures 3 and 4 of the drawing to include a central ridge l3 which is flanked at each side by an annular groove, said grooves forming cam surfaces l4, l4 merging into the central ridge l3. Each cylindrical end of the valve element has external surface portions thereof cut away as at I5 to provide clearances without destroying the guiding contact of the valve element end portions in the respective ends of the guide bore Ill. See Figures 2 and 4. Each end of the valve element also is provided with a cylindrical extension l6 of reduced diameter and which is recessed as at l! to receive a seat engaging ball IS, the end extensions being peened or spun over as at Hi to retain the balls loosely within their receiving recesses. This loose mounting of the seat engaging balls permits each ball to partake of sufficient movement relative to the center of the valve element to assure self centering or perfect seating thereof.

A seat member 20 is removably mounted in each end extremity of the casing bore I0, each said seat member including a cylindrical portion snugly receivable in the respective casing leg end and a flange or head enlargement 22 disposed to abut the respective leg extension end and be removably held thereagainst by a coupling cap 23 threadably mounted on the respective leg extension in the manner clearly illustrated in Figure 2. Each cap 23 may include an externally threaded coniform male coupling element extension 24,

One end of the casing bore 8 provides a service or outlet port, and in the other end of this bore a detent plug 25 is removably mounted. The plug includes a sprin chamber 26 and has a slightly larger ball chamber 21 provided in the cylindrical end extension of the plug which is disposed adjacent the casing bore In and the shuttle valve element slidably mounted therein. A detent ball 28 is yieldably mounted in the ball chamber and projects therefrom into position for yieldably engaging with one or the other of the inclined surfaces I4 on the shuttle valve element II for yieldably holding said element against one or the other of the valve seats 20. As before stated, the seat engaging balls I8 are free to move slightly relative to the valve element I I so as to perfectly seat in and close the respective valve seats 20. At least one aperture 29 is provided in the reduced diameter cylindrical extension of the plug 25 at a point above the ball 28 so as to permit free passage of fluid between the space surrounding said reduced diameter extension and the interior of the plug so as to prevent trapping of pressure fluid in the plug and interference thereof with the free movement of the ball 28.

The valve structure is adaptable to many uses. One practical use is diagrammatically illustrated in Figure l of the drawing in which the service or outlet port of the casing is shown connected as at 30 with a motor or the like intended to be driven by fluid pressure directed thereto through the valve structure. One of the casing legs 6 and the valve seat therein is connected as at 32 in communication with a normal pressure fluid source such as a pump 33. The other casing leg 6 and the valve seat therein is connected as at 34 with an emergency pressure source such as a compressed air tank 35. Cut-off valves 36 may be provided in both of the connecting lines 32 and 34.

Assuming the valve 36 in the connecting line 32 to be open and valve 36 in the connecting line 34 to be closed, pressure fluid from the normal or pump source 33 will enter the valve casing and automatically shift the valve element II to the right, thereby closing the connecting line 34 and opening the connecting line 32. The pressure fluid directed through the connecting line 32 will pass into the bore ID in the connected leg 6 of the casing and will pass into the service port or outlet about the unseated end of the valve element through the clearance I therein and through the connecting line 30 to the motor 3|. Should operation of the pump be discontinued for any reason, the valve 36 in the line 34 can be opened and emergency pressure from the tank 35 will serve to reverse the position of the valve element II and automatically direct emergency pressure fluid through the connectin line 30 to the motor 3 I. It will be obvious that when the normal supply of pressure fluid is again delivered from the pump the shuttle valve will again be shifted torestore the normal operation first described. While it is preferred that the casing bore in which the shuttle valve is guided be smaller than the intersecting bore, the intersecting bores may of course be made of the same or substantially the same diameter. In Figures '7 and 8 of the drawing there is illustrated a slightly modified form of casing structure in which the vertical bore 31 and the intersecting or shuttle valve receiving bore 38 are made of the same or substantially the same diameter. In this form of the invention an undercut or annular passage 39 aligned with the bore 38 may be included, if desired, to provide more flow than would be provided by the ordinary intersection of the bores 31 and 38.

In the foregoing description there is described a valve structure which can be manufactured inexpensively and with great facility, partly due to the fact that the casing is generally cruciform in shape and is provided with intersecting straight through bores effective to provide for the mounting of the coaxially aligned seats and also the service port and the detent plug. The shuttle valve element is very simple in construction and positive in action, the external surface clearances at the respective end of the valve element provide properly controlled communication between the respective valve seats and the service port without disturbing the guiding contact of the valve element ends in the valve bore, and the movably mounted seat engaging balls in the valve element assure perfect seating of the respective valve ends.

It is of course to be understood that the details of structure and the arrangement of parts may be variously changed and modified without departing from the spirit and scope of the invention.

I claim:

1. In a valve of the character described, a casing having a cylindrical bore therethrough with an intermediate enlarged portion concentric thereto and an inlet seat at each end of the bore and a single outlet port communicating with said intermediate enlarged portion, a shuttle valve slidable in the bore and having provision for alternately engaging the seats to open communication between a selected inlet and the outlet port and close the other inlet, said shuttle valve having cylindrical portions engaging the Wall of said bore endwise of said enlarged portion and so spaced apart as to be disengageable from said bore one at a time at said enlargement to open the inlets, said shuttle also having non-circular portions between the seat engaging portions and the cylindricalportions and forming the sole guiding means within the bore for that end of the shuttle which is in open position and defining with said bore clearance spaces through which fluid can freely pass from a selected inlet into the intermediate enlarged portion of the bore and thence to the outlet port.

2. A shuttle valve having a generally cruciform casing presenting an elongated main body and two leg extensions axially aligned with their common axis disposed in right angular relation to the longitudinal center of said main body, said main body having a straight through bore centrally longitudinally thereof and forming a plug chamber at one end and a service port at its other end, said leg extensions having a straight through bore axially thereof and intersecting the firstmentioned bore, a valve seat in each leg extension bore portion, a shuttle valve element slide guided at its ends in said leg bore portions and having provision for alternately engaging and closing one seat and disengaging and opening the other seat, and detent means in the plug chamber engageable with the valve element for yieldably retaining the valve element in one or the other of its shifted positions, said valve element having clearances at each end thereof for opening communication about the unseated end of the valve element and between the service port and the leg bore portion in which said unseated end is guided, the valve element and detent means being so constructed and arranged that communication at an end of the shuttle is opened only after the communication at the other end of the shuttle is closed and after the detent has passed the center of the shuttle.

JOSEPH F. MELICHAR.

US47415543 1943-01-30 1943-01-30 Shuttle valve Expired - Lifetime US2408799A (en)

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431936A (en) * 1945-02-26 1947-12-02 James L Hudson Liquid carbonator
US2488949A (en) * 1945-11-17 1949-11-22 Fawick Airflex Company Inc Exhaust valve
US2546367A (en) * 1944-11-27 1951-03-27 Warner Aircraft Corp Hydraulic braking system with power parking valve
US2569967A (en) * 1943-09-30 1951-10-02 Electrol Inc Valve
US2711186A (en) * 1951-11-16 1955-06-21 Perez Jose Argibay Emergency check valve for hydraulic brakes
US2729226A (en) * 1952-06-24 1956-01-03 Kenyon Instr Company Inc Automatic source selector valve
US2737165A (en) * 1951-03-21 1956-03-06 Robert H Thorner Governor device
US2742978A (en) * 1950-08-17 1956-04-24 Stewart Warner Corp Lubricant measuring valve for centralized lubricating system
US2821856A (en) * 1953-12-15 1958-02-04 William J Levedahl Rapid gas-sampling valve
DE1088303B (en) * 1957-10-23 1960-09-01 Ross Operating Valve Co Control device with a control slide and its associated auxiliary slide
US3044481A (en) * 1958-06-02 1962-07-17 Regan Forge & Eng Co Automatic pressure fluid accumulator system
US3198203A (en) * 1962-12-26 1965-08-03 Saf T Brake Valve Co Inc Safety valve for hydraulic braking system
US3410294A (en) * 1966-12-27 1968-11-12 Ace Controls Shuttle valve
US3863506A (en) * 1973-06-13 1975-02-04 Pro Tech Inc Liquid sampling
US4023417A (en) * 1973-06-13 1977-05-17 Pro-Tech Inc. Liquid sampling
US4493435A (en) * 1982-11-10 1985-01-15 Product Research And Development Liquid dispensing system and automatic selector therefor
US4619255A (en) * 1981-11-16 1986-10-28 East/West Industries, Inc. Oxygen supply system
US6257268B1 (en) 1999-12-01 2001-07-10 Gilmore Valve Company Pressure biased shuttle valve
US6318400B1 (en) 1999-12-01 2001-11-20 Gilmore Valve Company Low interflow hydraulic shuttle valve
US6655405B2 (en) 2001-01-31 2003-12-02 Cilmore Valve Co. BOP operating system with quick dump valve
US6837243B1 (en) 2003-09-30 2005-01-04 Scott Technologies, Inc. Automatic transfer regulator for hose-line respirator
US20130220456A1 (en) * 2010-11-10 2013-08-29 Dominic Becker Safety fitting
US20160208937A1 (en) * 2015-01-19 2016-07-21 Nidec Tosok Corporation Spool switching valve device
US20170234485A1 (en) * 2016-02-16 2017-08-17 II C. Wade Navarre Automatic air backup system
US20180238471A1 (en) * 2017-02-21 2018-08-23 The Boeing Company Shuttle Valve with Damping

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2569967A (en) * 1943-09-30 1951-10-02 Electrol Inc Valve
US2546367A (en) * 1944-11-27 1951-03-27 Warner Aircraft Corp Hydraulic braking system with power parking valve
US2431936A (en) * 1945-02-26 1947-12-02 James L Hudson Liquid carbonator
US2488949A (en) * 1945-11-17 1949-11-22 Fawick Airflex Company Inc Exhaust valve
US2742978A (en) * 1950-08-17 1956-04-24 Stewart Warner Corp Lubricant measuring valve for centralized lubricating system
US2737165A (en) * 1951-03-21 1956-03-06 Robert H Thorner Governor device
US2711186A (en) * 1951-11-16 1955-06-21 Perez Jose Argibay Emergency check valve for hydraulic brakes
US2729226A (en) * 1952-06-24 1956-01-03 Kenyon Instr Company Inc Automatic source selector valve
US2821856A (en) * 1953-12-15 1958-02-04 William J Levedahl Rapid gas-sampling valve
DE1088303B (en) * 1957-10-23 1960-09-01 Ross Operating Valve Co Control device with a control slide and its associated auxiliary slide
US3044481A (en) * 1958-06-02 1962-07-17 Regan Forge & Eng Co Automatic pressure fluid accumulator system
US3198203A (en) * 1962-12-26 1965-08-03 Saf T Brake Valve Co Inc Safety valve for hydraulic braking system
US3410294A (en) * 1966-12-27 1968-11-12 Ace Controls Shuttle valve
US3863506A (en) * 1973-06-13 1975-02-04 Pro Tech Inc Liquid sampling
US4023417A (en) * 1973-06-13 1977-05-17 Pro-Tech Inc. Liquid sampling
US4619255A (en) * 1981-11-16 1986-10-28 East/West Industries, Inc. Oxygen supply system
US4493435A (en) * 1982-11-10 1985-01-15 Product Research And Development Liquid dispensing system and automatic selector therefor
US6257268B1 (en) 1999-12-01 2001-07-10 Gilmore Valve Company Pressure biased shuttle valve
US6318400B1 (en) 1999-12-01 2001-11-20 Gilmore Valve Company Low interflow hydraulic shuttle valve
US6655405B2 (en) 2001-01-31 2003-12-02 Cilmore Valve Co. BOP operating system with quick dump valve
US20040107991A1 (en) * 2001-01-31 2004-06-10 Gilmore Valve Co., Ltd. Bop operating system with quick dump valve
US6779543B2 (en) 2001-01-31 2004-08-24 Gilmore Valve Co., Ltd. BOP operating system with quick dump valve
US6837243B1 (en) 2003-09-30 2005-01-04 Scott Technologies, Inc. Automatic transfer regulator for hose-line respirator
US20130220456A1 (en) * 2010-11-10 2013-08-29 Dominic Becker Safety fitting
US9322484B2 (en) * 2010-11-10 2016-04-26 Dominic Becker Safety fitting
US20160208937A1 (en) * 2015-01-19 2016-07-21 Nidec Tosok Corporation Spool switching valve device
US9657851B2 (en) * 2015-01-19 2017-05-23 Nidec Tosok Corporation Spool switching valve device
US20170234485A1 (en) * 2016-02-16 2017-08-17 II C. Wade Navarre Automatic air backup system
US10247357B2 (en) * 2016-02-16 2019-04-02 II C. Wade Navarre Automatic air backup system
US20180238471A1 (en) * 2017-02-21 2018-08-23 The Boeing Company Shuttle Valve with Damping
US10344890B2 (en) * 2017-02-21 2019-07-09 The Boeing Company Shuttle valve with damping

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