US3661183A - Electromagnetically operated valve with two seats - Google Patents
Electromagnetically operated valve with two seats Download PDFInfo
- Publication number
- US3661183A US3661183A US3661183DA US3661183A US 3661183 A US3661183 A US 3661183A US 3661183D A US3661183D A US 3661183DA US 3661183 A US3661183 A US 3661183A
- Authority
- US
- United States
- Prior art keywords
- valve
- port
- valve member
- fluid
- plunger
- 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
Links
Images
Classifications
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0686—Braking, pressure equilibration, shock absorbing
- F16K31/0693—Pressure equilibration of the armature
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/0624—Lift valves
- F16K31/0627—Lift valves with movable valve member positioned between seats
- F16K31/0631—Lift valves with movable valve member positioned between seats with ball shaped valve members
-
- 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
Definitions
- ABSTRACT An electromagnetically operated valve wherein a spherical valve 'member normally engages one of two seats to thereby connect a port for spent fluid with a port which is connected with a consumer of pressurized fluid.
- the valve member is held in such position by the plunger of an armature which is accommodated in a fluid-filled chamber provided in the valve housing and communicating with a fluid-admitting port.
- the plunger When the winding of the electromagnet is energized, the plunger is retracted to permit movement of the valve member into engagement with the other seat whereby the port which is connected to the consumer communicates with the fluid-admitting port.
- the plunger can be held in a position in which the valve member engages the one seat by fluid pressure in the chamber and/or by a spring.
- the present invention relates to valves in general, and more particularly to improvements in electromagnetically operated valves of the type wherein the valve member is movable between two seats.
- An electromagnetically operated valve with two seats is disclosed in Swiss patent No. 416,252.
- the patented valve comprises a valve member which is movable between the two seats and a polarized electromagnet which is outwardly adjacent to the housing of the valve and is energizable to move the valve member to one of its positions.
- a drawback of such valves is that the plunger which effects movements of the valve member must be machined with a high degree of precision and that the housing of the valve must be provided with accurately machined guide surfaces for the plunger in order to avoid jamming. Such precise finish of the plunger and of guide surfaces involves considerable expenses.
- the plunger is rather bulky and has a relatively large surface for action of pressurized fluid; therefore, the frequency at which the valve member can move between its positions is rather low.
- An object of the invention is to provide an electromagnetically operated valve with two seats wherein the valve member is movable at a high frequency, wherein the means for eflecting movements of the valve member between its positions need not be machined or finished with a high degree of precision but are still capable of operating without jamming, and wherein the parts which are used to effect movements of the valve member are properly lubricated at all times.
- Another object of the invention is to provide a novel and improved construction and mounting for an electromagnet which is used to effect movements of the valve member between two valve seats.
- a further object of the invention is to provide a valve wherein the ports of the valve housing are sealed in a novel and improved way.
- the improved electromagnetically operated valve comprises a housing including two seats and having first, second and third ports one of which is connected with a source of pressurized fluid, a fluid-filled internal chamber provided in the housing and communicating with the one port, a valve member disposed intermediate the seats and movable between a first position in which it engages one of the seats to thereby connect the first and second ports (e.g., to connect the port which supplies pressurized fluid to a consumer with the port which returns spent fluid from the consumer to a tank) and a second position in which the valve member engages the other seat to thereby connect the first or second port with the third port (e.g., to connect the port which is connected with the source of pressurized fluid with the port which conveys such fluid to the consumer), and an electromagnet including an armature which is reciprocable, preferably with at least some clearance, in the fluid filled chamber of the housing and normally holds the valve member in engagement with the one seat.
- the electromagnet further comprises winding means which is energizable at frequent or less frequent intervals to thereby efiect movement of the armature so that the valve member can move into engagement with the other seat, e.g., in response to fluid pressure.
- FIG. 1 is an axial sectional view of an electromagnetically operated valve with two seats which embodies one form of the invention.
- FIG. 2 is a similar sectional view of a second valve.
- an electromagnetically operated valve which comprises a housing including a valve body 1 and two coaxial seats 3, 4 mounted in an axial bore 2 of the body 1.
- the seats 3 and 4 are spaced from each other in the axial direction of the body 1 and are provided with concave sealing surfaces 5, 6 disposed at the axial ends of two bores 38, 38a.
- a spherical valve member or stopper 7 is disposed between the seats 3, 4 and is normally biased against the sealing surface 5 to thereby permit communication between a first radial port 27 of the housing and a second radial port 28 as well as to seal the ports 27, 28 from an axial fluidadmitting third port 29.
- the latter is connected with a pump (not shown) or another suitable source of pressurized fluid, e.g., oil.
- the valve member 7 is held in the illustrated first position by the plunger 8 of a reciprocable armature which forms part of an electromagnet and is movable axially of the housing 1.
- the plunger 8 is slidable in an annular guide member or bearing10 which is fixedly mounted in the housing and serves as a retainer for one end of a helical spring 9 which bears against a collar 12 abutting against a conical shoulder 11 on the plunger.
- the spring 9 reacts against the guide member 10 and urges the plunger 8 axially toward the port 29 whereby the left-hand end face of the plunger maintains the valve member 7 in sealing engagement with the surface 5 of the lefthand seat 3.
- the guide member 10 consists of nonmagnetic material and the spring 9 is accommodated in a smaller diameter portion 2a of the axial bore in the body 1.
- the armature further comprises a ring-shaped element 13 of magnetizable material which is fixedly secured to the righthand portion of the plunger 8 and is received with clearance in an axially extending fluid-filled chamber 15 of the valve housing.
- the right-hand end face 14 of the plunger 8 extends slightly beyond the element 13 and abuts against the adjacent face 17 of a core 16 when the armature is moved axially from the illustrated extended position to a retracted position in which the plunger 8 is slightly spaced from the valve member 7 even if the latter abuts against the sealing surface 6 of the right-hand seat 4.
- the electromagnet further comprises a yoke 18 for windings 19. The yoke 18 surrounds the core 16.
- a portion of the core 16 is surrounded by a sleeve 18 of nonmagnetic material which serves as a means for preventing escape of fluid from the chamber 15, namely, along the right-hand end face of the guide member 10.
- the housing of the valve further includes a cupped shell 20 which surrounds the parts 16, 18 and 19 of the electromagnet.
- the shell 20 has an intumed collar 21 which overlies a shoulder 22 provided on an annular coupling member 23 which forms part of the housing and has a second annular shoulder 24 overlapped by an intumed collar 25 of the body I.
- An enlarged portion 26 of the port 29 accommodates a filter 229 for the fluid which is delivered to the housing from the source.
- the port 27 is connected with one or more consumers of pressurized fluid and the port 28 is connected with a tank or another receptacle for spent fluid.
- the chamber 15 receives pressurized fluid from the port 29 by way of a channel 30 in the body 1, a ring-shaped space 31 which surrounds the guide member 10, and an axially parallel groove 32 machined into the guide member.
- the windings 19 of the electromagnet in the shell 20 are connected with an energy source by way of conductors 34.
- the body 1 is provided with circumferential grooves for elastic sealing rings 35, 36, 37 and is sealingly received in a valve block, not shown.
- the diameter of the bore 38 in the seat 3 equals the diameter of the plunger 8.
- the ring-shaped element 13 When the winding 19 of the electromagnet is energized, the ring-shaped element 13 is attracted by the core 16 so that the end face 14 of the plunger 8 abuts against the face 17.
- the fluid pressure in the bore 38 of the seat 3 then causes the valve member 7 to engage the surface 6 of the seat 4 and to permit communication between the ports 27, 29 which are then sealed from the port 28. Since the face 17 of the core is engaged only by the end face 14 of the plunger 14, the armature is not likely to stick in its retracted position so that the spring 9 can immediately expand as soon as the circuit of the windings 19 is interrupted.
- the axial length of the plunger 8 is such that, when the end face 14 abuts against the face 17 of the core 16, the left-hand end face of the plunger is slightly spaced from the valve member 7 even when the latter engages the surface 6 of the seat 4
- the armature 8, 13 is of lightweight construction so that it can be moved back and forth at a high frequency. Such high-frequency operation is further enhanced by the fact that, when the electromagnet is deenergized, the hydraulic forces acting on the valve member 7 are balanced by hydraulic forces acting on the plunger 8. Consequently, a relatively weak electromagnet and a relatively weak spring 9 will suffice to effect movements of the valve member 7 between the seats 3 and 4.
- the stroke of the plunger 8 is preferably short, i.e., the valve member 7 must cover a short distance to move from engagement with the surface into engagement with the surface 6 or vice versa.
- FIG. 2 shows a second valve which employs a hollow plunger 40 having a diameter which exceeds substantially the diameter of the bore 38 in the seat 3.
- a hollow plunger is preferred in order to reduce the mass of the armature.
- the right-hand end of the plunger 40 is sealed by a disk 1 received in a cap 42 of magnetizable material. This cap is received in a fluid-filled chamber 43 of the valve housing 46.
- the annular clearance between the peripheral surface of the cap 42 and the surface surrounding the chamber 43 is shown at 45.
- the clearance 45 connects the chamber 43 with an annular space 44 which communicates with the fluid-admitting port 29' by way of the channel 30' in the valve housing 46.
- the latter includes a cylindrical extension 47 received in a compartment 49 defined by an enclosure 48, e.g., a valve block.
- the enclosure 48 has an internal shoulder 50 engaging an elastically deformable sealing ring 51.
- Two additional sealing rings 51 are installed in the compartment 49 and one thereof engages a shoulder 56 of the housing 46.
- the leftmost sealing ring 51 is adjacent to a steel ring 52 having passages 53 in communication with the port 27' in the extension 47.
- a second steel ring 55 is disposed between the two right-hand sealing rings 51 and is provided with passages communicating with the port 28'.
- the rings 51 are subjected to at least some deforming stresses to insure a satisfactory sealing action. Since the effective area of the right-hand end face of the armature exceeds the diameter of the bore 38 in the seat 3, the plunger 40 normally maintains the valve member 7 in engagement with the surface 5.
- the armature acts not unlike a differential piston and automatically holds the valve member 7 in the illustrated lefthand end position when the windings of the electromagnet are deenergized. Therefore, the valve spring 9 of FIG. 1 can be dispensed with.
- the port 29 of the extension 47 communicates with a conduit 60 in the enclosure 48; the
- conduit 60 is connected with the sourceof pressurized fluid.
- An electromagnetically operated valve comprising a housing including two seats and having first, second and third ports, one of said ports being connected with a source of pressurized fluid and said housing further having a fluid-filled chamber communicating with said one port; a valve-member disposed intermediate said seats and movable between a first position in which it engages one of said seats to thereby connect said first and second ports and a second position in which it engages the other seat to thereby connect one of said first and second ports with said third port; and an electromagnet including an armature reciprocable with clearance in said fluid-filled chamber and normally holding said valve member in engagement with said one seat, and winding means energizable to efi'ect movement of said armature so that said valve member can move into engagement with said other seat.
- said armature comprises a plunger which normally holds said valve member in said first position and further comprising annular guide means provided in said housing for said plunger and spring means for biasing said plunger against said valve member.
- said armature comprises a differential piston arranged to normally maintain said valve member in said first position under the action of fluid pressure in said chamber.
- valve member is a sphere and said seats have coaxial bores one of which connects said first and second ports and the other of which connects said third port with one of said first and second ports.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691934212 DE1934212A1 (de) | 1969-07-05 | 1969-07-05 | Impulsgesteuertes Doppelsitzmagnetventil |
Publications (1)
Publication Number | Publication Date |
---|---|
US3661183A true US3661183A (en) | 1972-05-09 |
Family
ID=5739005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3661183D Expired - Lifetime US3661183A (en) | 1969-07-05 | 1970-06-12 | Electromagnetically operated valve with two seats |
Country Status (8)
Country | Link |
---|---|
US (1) | US3661183A (xx) |
JP (1) | JPS4910371B1 (xx) |
CH (1) | CH500414A (xx) |
DE (1) | DE1934212A1 (xx) |
ES (1) | ES381442A1 (xx) |
FR (1) | FR2050104A5 (xx) |
GB (1) | GB1320014A (xx) |
SE (1) | SE361082B (xx) |
Cited By (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3732893A (en) * | 1971-03-05 | 1973-05-15 | Bosch Gmbh Robert | Solenoid valve |
US3983909A (en) * | 1973-12-14 | 1976-10-05 | Societe Anonyme D.B.A. | Three-way solenoid valve |
US4030668A (en) * | 1976-06-17 | 1977-06-21 | The Bendix Corporation | Electromagnetically operated fuel injection valve |
US4050477A (en) * | 1975-10-31 | 1977-09-27 | International Telephone And Telegraph Corporation | Valve |
US4057190A (en) * | 1976-06-17 | 1977-11-08 | Bendix Corporation | Fuel break-up disc for injection valve |
US4172471A (en) * | 1977-03-18 | 1979-10-30 | Bjoerklund Curt Arnold | Valve unit |
US4385642A (en) * | 1981-01-19 | 1983-05-31 | Hydraulic Servocontrols Corporation | Bi-stable electrically operated valve |
US4494573A (en) * | 1981-06-24 | 1985-01-22 | Societe Anonyme Des Etablissements Jouvenel Et Cordier | Electrovalve |
FR2550870A1 (fr) * | 1983-08-16 | 1985-02-22 | Ambac Ind | Systeme de vanne de commande |
US4509716A (en) * | 1983-09-30 | 1985-04-09 | Cts Corporation | Electromagnetically operated hydraulic valve device with snap-together valve housing |
US4552311A (en) * | 1983-09-23 | 1985-11-12 | Allied Corporation | Low cost unitized fuel injection system |
EP0171998A1 (en) * | 1984-08-15 | 1986-02-19 | AlliedSignal Inc. | Servo apparatus |
US4682136A (en) * | 1985-11-26 | 1987-07-21 | United Technologies Automotive, Inc. | Fused covering for an electrical conductor and method for making the fused covering |
WO1988001023A1 (en) * | 1986-08-04 | 1988-02-11 | Mcdonnell Douglas Corporation | Compound pneumatic valve |
US4756331A (en) * | 1985-05-25 | 1988-07-12 | Robert Bosch Gmbh | Electromagnetic valve |
US4844122A (en) * | 1987-09-10 | 1989-07-04 | Diesel Kiki Co., Ltd. | Electromagnetic valve with two opposed valve seats |
EP0332418A1 (en) * | 1988-03-09 | 1989-09-13 | Fuji Jukogyo Kabushiki Kaisha | System for controlling the transfer clutch of a four-wheel drive vehicle |
US4997133A (en) * | 1987-08-25 | 1991-03-05 | Ausiello Francesco P | Electromagnetically-controlled fuel injection valve for I.C. engines |
US5050642A (en) * | 1990-08-23 | 1991-09-24 | Siemens Automotive L.P. | Pressure-compensated three-way solenoid valve |
US5239968A (en) * | 1991-12-24 | 1993-08-31 | Robert Bosch Gmbh | Electrically controlled fuel injection system |
US5718264A (en) * | 1996-06-10 | 1998-02-17 | Sturman Industries | High speed 3-way control valve |
US5836230A (en) * | 1996-08-27 | 1998-11-17 | Oded E. Sturman | High speed 2-way control valve |
US5855228A (en) * | 1995-09-05 | 1999-01-05 | Perach; Asi | Control valve assembly |
US6062531A (en) * | 1996-12-07 | 2000-05-16 | Robert Bosch Gmbh | Solenoid valve for controlling an electrically controlled fuel ignition valve |
US20020038670A1 (en) * | 2000-10-04 | 2002-04-04 | Noboru Matsusaka | Solenoid valve device and its manufacturing method |
WO2002052145A1 (de) * | 2000-12-23 | 2002-07-04 | Robert Bosch Gmbh | Magnetventil zur steuerung eines einspritzventils einer brennkraftmaschine |
US20020166591A1 (en) * | 2001-03-16 | 2002-11-14 | Marcello Cristiani | Electrically controlled three-way valve |
US20020185623A1 (en) * | 2001-05-25 | 2002-12-12 | Shigeharu Yamamoto | Electromagnetic valve |
EP1288550A1 (en) * | 2001-09-04 | 2003-03-05 | Smc Corporation | Electromagnetic valve |
US20060151733A1 (en) * | 2005-01-13 | 2006-07-13 | G.W. Lisk Company, Inc. | Solenoid valve combining a core and cartridge in a single piece |
US20090000677A1 (en) * | 2007-06-29 | 2009-01-01 | Denso Corporation | Oil pressure control device having a damper for suppressing pressure dither |
US20090038697A1 (en) * | 2005-04-27 | 2009-02-12 | Ryosuke Cho | Switching valve |
CN100578048C (zh) * | 2004-04-06 | 2010-01-06 | 株式会社不二工机 | 电磁阀 |
US20120298898A1 (en) * | 2011-05-27 | 2012-11-29 | Georg Scherer | Electromagnetic pressure valve |
US20130020515A1 (en) * | 2010-04-01 | 2013-01-24 | Dorma Gmbh + Co Kg | Hydraulic Solenoid Distribution Valve |
US20130139919A1 (en) * | 2010-08-19 | 2013-06-06 | Bifold Fluidpower Limited | Valve |
US20140183286A1 (en) * | 2011-08-08 | 2014-07-03 | Mitsubishi Electric Corporation | Fuel injection valve |
US20150102243A1 (en) * | 2013-10-15 | 2015-04-16 | Continental Automotive Systems, Inc. | Normally high solenoid assembly |
US20150176700A1 (en) * | 2013-12-19 | 2015-06-25 | Robert Bosch Gmbh | Pressure control valve including a compensating chamber |
US9200720B2 (en) | 2014-01-13 | 2015-12-01 | American Axle & Manufacturing, Inc. | Variable flow valve |
US20180355993A1 (en) * | 2017-06-09 | 2018-12-13 | Flextronics Ap, Llc | Hydraulic valve configuration for nh vbs with a nl solenoid |
EP3575645A1 (en) * | 2018-06-01 | 2019-12-04 | Hamilton Sundstrand Corporation | Device for pilot valve |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1021225A (en) * | 1974-06-28 | 1977-11-22 | General Signal Corporation | Quick-acting valve assembly |
DE2625555A1 (de) * | 1976-06-05 | 1977-12-15 | Teves Gmbh Alfred | Schaltventil |
FR2383372A1 (fr) * | 1977-03-11 | 1978-10-06 | Abg Semca | Electrovanne a trois voies |
DE2751150C2 (de) * | 1977-11-16 | 1986-01-09 | Alfred Teves Gmbh, 6000 Frankfurt | Elektromagnetisch betätigbares 3/3-Wegeventil |
DE94610T1 (de) * | 1982-05-18 | 1984-01-19 | Diesel Kiki Co. Ltd., Tokyo | Mit einem magnet betaetigtes ventil fuer oelhydraulischen kreislauf und verfahren fuer dessen zusammenbau. |
DE3219799C2 (de) * | 1982-05-26 | 1985-10-31 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Magnetventil |
GB2124034B (en) * | 1982-06-28 | 1986-09-10 | Imp Clevite Inc | Solenoid valve |
DE3231172C1 (de) * | 1982-08-21 | 1984-03-01 | Drägerwerk AG, 2400 Lübeck | Elektromagnetisch betaetigtes Ventil fuer Druckmittel |
IT1187903B (it) * | 1986-02-11 | 1987-12-23 | Weber Spa | Valvola a comando elettromagnetico a tre vie per un circuito idraulico |
US4768555A (en) * | 1987-04-30 | 1988-09-06 | Allied-Signal Inc. | Solenoid valve |
DE3810788A1 (de) * | 1988-03-30 | 1989-10-12 | Teves Gmbh Alfred | Ventilblockaggregat |
DE4415096A1 (de) * | 1994-04-29 | 1995-11-02 | Binder Magnete | Magnetventil |
DE19535945A1 (de) * | 1995-09-27 | 1997-04-03 | Hydraulik Ring Gmbh | Magnetventil sowie Verfahren zu dessen Herstellung |
DE19945183A1 (de) * | 1999-09-21 | 2001-03-22 | Mannesmann Rexroth Ag | Sitzventil |
DE10337752B4 (de) * | 2003-08-08 | 2008-07-24 | Hydraulik-Ring Gmbh | Druckregelventil |
DE102004018677B4 (de) * | 2004-04-17 | 2014-10-30 | Robert Bosch Gmbh | Magnetventil für eine schlupfgeregelte hydraulische Fahrzeugbremsanlage |
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US1202527A (en) * | 1913-05-19 | 1916-10-24 | Railway Utility Company | Motor for steam-radiator valves. |
US1944113A (en) * | 1932-04-02 | 1934-01-16 | Frick Co | Solenoid shut-off valve |
US2612188A (en) * | 1947-04-11 | 1952-09-30 | Mcquay Norris Mfg Co | Solenoid-operated gas valve |
US2916252A (en) * | 1957-01-09 | 1959-12-08 | William M Hobbs | Fluid valve |
GB842238A (en) * | 1957-08-28 | 1960-07-27 | Rech Etudes Prod | Improvements in or relating to electro-magnetically operated valves |
US3396751A (en) * | 1963-11-27 | 1968-08-13 | Alfred Teves Fa | Two-position valve |
-
1969
- 1969-07-05 DE DE19691934212 patent/DE1934212A1/de active Pending
-
1970
- 1970-05-04 CH CH663370A patent/CH500414A/de not_active IP Right Cessation
- 1970-06-08 FR FR7020999A patent/FR2050104A5/fr not_active Expired
- 1970-06-12 US US3661183D patent/US3661183A/en not_active Expired - Lifetime
- 1970-07-02 JP JP5736570A patent/JPS4910371B1/ja active Pending
- 1970-07-03 SE SE929770A patent/SE361082B/xx unknown
- 1970-07-04 ES ES381442A patent/ES381442A1/es not_active Expired
- 1970-07-06 GB GB3264670A patent/GB1320014A/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1202527A (en) * | 1913-05-19 | 1916-10-24 | Railway Utility Company | Motor for steam-radiator valves. |
US1944113A (en) * | 1932-04-02 | 1934-01-16 | Frick Co | Solenoid shut-off valve |
US2612188A (en) * | 1947-04-11 | 1952-09-30 | Mcquay Norris Mfg Co | Solenoid-operated gas valve |
US2916252A (en) * | 1957-01-09 | 1959-12-08 | William M Hobbs | Fluid valve |
GB842238A (en) * | 1957-08-28 | 1960-07-27 | Rech Etudes Prod | Improvements in or relating to electro-magnetically operated valves |
US3396751A (en) * | 1963-11-27 | 1968-08-13 | Alfred Teves Fa | Two-position valve |
Cited By (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3732893A (en) * | 1971-03-05 | 1973-05-15 | Bosch Gmbh Robert | Solenoid valve |
US3983909A (en) * | 1973-12-14 | 1976-10-05 | Societe Anonyme D.B.A. | Three-way solenoid valve |
US4050477A (en) * | 1975-10-31 | 1977-09-27 | International Telephone And Telegraph Corporation | Valve |
US4030668A (en) * | 1976-06-17 | 1977-06-21 | The Bendix Corporation | Electromagnetically operated fuel injection valve |
US4057190A (en) * | 1976-06-17 | 1977-11-08 | Bendix Corporation | Fuel break-up disc for injection valve |
US4172471A (en) * | 1977-03-18 | 1979-10-30 | Bjoerklund Curt Arnold | Valve unit |
US4385642A (en) * | 1981-01-19 | 1983-05-31 | Hydraulic Servocontrols Corporation | Bi-stable electrically operated valve |
US4494573A (en) * | 1981-06-24 | 1985-01-22 | Societe Anonyme Des Etablissements Jouvenel Et Cordier | Electrovalve |
FR2550870A1 (fr) * | 1983-08-16 | 1985-02-22 | Ambac Ind | Systeme de vanne de commande |
US4538645A (en) * | 1983-08-16 | 1985-09-03 | Ambac Industries, Inc. | Control valve assembly |
US4552311A (en) * | 1983-09-23 | 1985-11-12 | Allied Corporation | Low cost unitized fuel injection system |
US4509716A (en) * | 1983-09-30 | 1985-04-09 | Cts Corporation | Electromagnetically operated hydraulic valve device with snap-together valve housing |
WO1985001561A1 (en) * | 1983-09-30 | 1985-04-11 | Cts Corporation | Electromagnetically operated hydraulic valve device with snap-together valve housing |
EP0171998A1 (en) * | 1984-08-15 | 1986-02-19 | AlliedSignal Inc. | Servo apparatus |
US4756331A (en) * | 1985-05-25 | 1988-07-12 | Robert Bosch Gmbh | Electromagnetic valve |
US4682136A (en) * | 1985-11-26 | 1987-07-21 | United Technologies Automotive, Inc. | Fused covering for an electrical conductor and method for making the fused covering |
US4741365A (en) * | 1986-08-04 | 1988-05-03 | Mcdonnell Douglas Corporation | Compound pneumatic valve |
WO1988001023A1 (en) * | 1986-08-04 | 1988-02-11 | Mcdonnell Douglas Corporation | Compound pneumatic valve |
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Also Published As
Publication number | Publication date |
---|---|
GB1320014A (en) | 1973-06-13 |
ES381442A1 (es) | 1972-12-01 |
FR2050104A5 (xx) | 1971-03-26 |
CH500414A (de) | 1970-12-15 |
JPS4910371B1 (xx) | 1974-03-09 |
DE1934212A1 (de) | 1971-01-14 |
SE361082B (xx) | 1973-10-15 |
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