US20050211317A1 - Solenoid operated spool valve with baffled dampening reservoir port and method of making same - Google Patents
Solenoid operated spool valve with baffled dampening reservoir port and method of making same Download PDFInfo
- Publication number
- US20050211317A1 US20050211317A1 US10/809,161 US80916104A US2005211317A1 US 20050211317 A1 US20050211317 A1 US 20050211317A1 US 80916104 A US80916104 A US 80916104A US 2005211317 A1 US2005211317 A1 US 2005211317A1
- Authority
- US
- United States
- Prior art keywords
- port
- spool
- reservoir
- cap
- bleed port
- 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.)
- Granted
Links
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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
- F16K31/0689—Braking of the valve element
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
-
- 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
- F16K31/061—Sliding valves
- F16K31/0613—Sliding valves with cylindrical slides
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
-
- 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
- Y10T137/0318—Processes
- Y10T137/0402—Cleaning, repairing, or assembling
- Y10T137/0491—Valve or valve element assembling, disassembling, or replacing
- Y10T137/0502—Multi way valve
-
- 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
- the present invention provides a baffle in the form of an offset passage for the fluid port to a reservoir disposed at the end of the spool in a solenoid operated spool valve for providing liquid dampening of the spool movement to minimize instability over the range of pressures and spool positions which the valve operates.
- the valve body includes a means for orienting the dampening reservoir port vertically above the reservoir; and, a cap is received over the end of the valve body with a port which is offset from the dampening reservoir port to baffle passage of fluid through the reservoir port.
- the fluid port in the reservoir cap is offset axially from the reservoir port with respect to the direction of motion of the spool.
- the reservoir cap may be assembled thereover by snap-locking engagement.
- the means for orienting the reservoir inlet preferably comprises a projection formed on the valve body for engaging a recess provided in the solenoid flux collector or upper body portion of the valve.
- FIG. 1 is a cross-section of the valving portion of the valve assembly of the present invention
- FIG. 2 is a top view of the left-hand portion of the assembly in FIG. 1 ;
- FIG. 3 is a section view taken along section indicating lines 3 - 3 of FIG. 1 ;
- FIG. 4 is a portion of a section view taken along section indicating lines 4 - 4 of FIG. 1 ;
- FIG. 5 is a section view taken along section indicating lines 5 - 5 of FIG. 1 .
- valve assembly is indicated generally at 10 and includes an upper body portion 12 which may comprise a flux collector of a solenoid coil (not shown) which has an armature/operating rod moved by the armature as denoted by reference numeral 16 extending from the coil. It will be understood that the details of the remaining structure of the solenoid operator have been omitted for the sake of brevity.
- a lower body portion 18 is connected to the upper body portion 12 ; and, portion 18 has a valving bore 20 formed therein into which is received, in closely fitting sliding engagement, a valving spool 22 which has one end 24 thereof in contact with one end of the armature or rod 16 . It will be understood that such an arrangement, as known in the art, produces movement of the spool in response to energization of the coil; and, movement of the armature 16 and spool 22 is indicated in dashed outline in FIG. 1 .
- the valving bore 20 is closed at the left end of the lower body portion 18 by a plug 26 threadedly engaging the end of the body.
- the spool 22 is biased in a rightward direction in FIG. 1 by a spring 28 such that the spool end 24 contacts the end of armature 16 .
- Spring 28 has one end registered against plug 26 and the opposite end registered against a recess 30 formed in the end of the spool 22 .
- the lower portion 18 of the valve body has formed therein a supply pressure inlet port 32 and a control signal pressure outlet port 34 spaced therefrom along bore 20 .
- an exhaust or sump port 36 spaced further therefrom in a direction toward the upper body 12 is an exhaust or sump port 36 .
- Spool 22 has a relieved portion or smaller diameter region 38 formed between inlet port 32 and exhaust port 36 .
- the relieved portion 38 of spool 22 forms valving lands at the opposite ends of the spool for metering flow entering port 32 and flow discharging to sump through port 36 , whereupon the desired control pressure is maintained at the control signal outlet port in response to axial movement of the spool 22 by armature 16 .
- the lower body portion 18 has a reservoir 40 formed therein at the left end of spool 22 which reservoir is formed by the bore 20 , plug 26 and the recess 30 formed in the end of the spool.
- Reservoir 40 has a restrictive port 42 communicating therewith formed in the wall of the body portion 18 ; and, reservoir 40 is configured to hold a sufficient volume of fluid so as to provide adequate dampening of sudden movement of the spool by forcing the fluid through the restriction of the port 42 .
- the port 42 is arranged to be vertically above the spool 22 by orienting body portion 18 in its attachment to the upper body portion 12 by a projection or rib 44 formed on the right hand end of the lower body portion 18 .
- Rib 44 is received in a recess or groove 46 formed in a bore 48 in the upper body 12 into which is received the right hand end of the lower body portion 18 .
- the lower body portion 18 is retained therein by material deformation denoted by reference numeral 50 of the upper body 12 into a groove 52 formed in the lower body portion 18 .
- a cap or cover 54 is disposed over the left end of the lower body portion 18 and is preferably snap-locked thereon by engagement of an internal barb 56 provided thereon into a corresponding recess or groove in the lower body.
- the cover 54 diverts and directs, e.g. baffles, flow from reservoir port 42 to an offset port 58 formed in the cover which may be axially or circumferentially displaced with respect to bore 20 from reservoir port 42 .
- Means are provided for orienting cap 54 and may be in the form of a projection or lug 60 formed thereon which engages a recess 62 formed in the body 18 to orient the port 58 vertically above spool 22 and in alignment with the port 42 .
- the present invention thus provides a baffled port for the spool dampening fluid reservoir of a solenoid operated spool valve such that a minimum amount of fluid is retained in the dampening reservoir when the reservoir port is starved by removal of the fluid source from the valve.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Multiple-Way Valves (AREA)
- Sliding Valves (AREA)
Abstract
A solenoid operated spool valve has a dampening reservoir formed at one end of the spool and which is ported for immersion in a fluid sump. The reservoir port is oriented vertically above the spool and a cap with an offset port is received over the reservoir port to baffle fluid flow from the reservoir and prevent the reservoir from draining when the port is fluid starved in the sump.
Description
- The present invention relates to solenoid operated valves of the spool type which operate to provide a regulated pressure signal to a control signal outlet port by bleeding fluid to an exhaust or sump port from the valving chamber. It has been found that such valves have a tendency to reach instability at certain pressure signal levels and spool positions with respect to the ports; and, it has been found desirable to provide a reservoir or chamber of fluid at the end of the spool to dampen spool movement and minimize the instability.
- Such valves have found application in the control of the shifting functions of an automatically shifted speed change power transmission such as utilized in passenger car and light truck motor vehicles. In such transmission applications, the valve body is mounted such that the spool motion is generally along a horizontally oriented axis; and, the spool dampening reservoir supplied with fluid by immersion in the transmission sump. However, during vehicle motion such as rapid acceleration, climbing or descending a hill, deceleration or cornering, the fluid in the sump may be moved away from the dampening reservoir port so as to expose the reservoir port and permit fluid to drain from the dampening reservoir. This occurrence can result in air entering the reservoir such that, upon return of the fluid to the inlet, the reservoir is not filled and dampening of the spool movement is disrupted.
- Accordingly, it has been desired to provide a way of preventing the fluid dampening reservoir of a solenoid operated spool valve from becoming starved and fluid draining therefrom such as occurs during movement of the fluid sump.
- The present invention provides a baffle in the form of an offset passage for the fluid port to a reservoir disposed at the end of the spool in a solenoid operated spool valve for providing liquid dampening of the spool movement to minimize instability over the range of pressures and spool positions which the valve operates. The valve body includes a means for orienting the dampening reservoir port vertically above the reservoir; and, a cap is received over the end of the valve body with a port which is offset from the dampening reservoir port to baffle passage of fluid through the reservoir port. In the present practice of the invention the fluid port in the reservoir cap is offset axially from the reservoir port with respect to the direction of motion of the spool. The reservoir cap may be assembled thereover by snap-locking engagement. The means for orienting the reservoir inlet preferably comprises a projection formed on the valve body for engaging a recess provided in the solenoid flux collector or upper body portion of the valve.
-
FIG. 1 is a cross-section of the valving portion of the valve assembly of the present invention; -
FIG. 2 is a top view of the left-hand portion of the assembly inFIG. 1 ; -
FIG. 3 is a section view taken along section indicating lines 3-3 ofFIG. 1 ; -
FIG. 4 is a portion of a section view taken along section indicating lines 4-4 ofFIG. 1 ; and, -
FIG. 5 is a section view taken along section indicating lines 5-5 ofFIG. 1 . - Referring to the drawings, the valve assembly is indicated generally at 10 and includes an
upper body portion 12 which may comprise a flux collector of a solenoid coil (not shown) which has an armature/operating rod moved by the armature as denoted byreference numeral 16 extending from the coil. It will be understood that the details of the remaining structure of the solenoid operator have been omitted for the sake of brevity. Alower body portion 18 is connected to theupper body portion 12; and,portion 18 has avalving bore 20 formed therein into which is received, in closely fitting sliding engagement, a valvingspool 22 which has oneend 24 thereof in contact with one end of the armature orrod 16. It will be understood that such an arrangement, as known in the art, produces movement of the spool in response to energization of the coil; and, movement of thearmature 16 andspool 22 is indicated in dashed outline inFIG. 1 . - The
valving bore 20 is closed at the left end of thelower body portion 18 by aplug 26 threadedly engaging the end of the body. Thespool 22 is biased in a rightward direction inFIG. 1 by aspring 28 such that the spool end 24 contacts the end ofarmature 16.Spring 28 has one end registered againstplug 26 and the opposite end registered against arecess 30 formed in the end of thespool 22. - The
lower portion 18 of the valve body has formed therein a supplypressure inlet port 32 and a control signalpressure outlet port 34 spaced therefrom alongbore 20. In addition, spaced further therefrom in a direction toward theupper body 12 is an exhaust orsump port 36. - Spool 22 has a relieved portion or
smaller diameter region 38 formed betweeninlet port 32 andexhaust port 36. The relievedportion 38 ofspool 22 forms valving lands at the opposite ends of the spool for meteringflow entering port 32 and flow discharging to sump throughport 36, whereupon the desired control pressure is maintained at the control signal outlet port in response to axial movement of thespool 22 byarmature 16. - The
lower body portion 18 has areservoir 40 formed therein at the left end ofspool 22 which reservoir is formed by thebore 20,plug 26 and therecess 30 formed in the end of the spool.Reservoir 40 has arestrictive port 42 communicating therewith formed in the wall of thebody portion 18; and,reservoir 40 is configured to hold a sufficient volume of fluid so as to provide adequate dampening of sudden movement of the spool by forcing the fluid through the restriction of theport 42. - In the present practice of the invention, for horizontally disposed arrangements of the
lower valve body 18, theport 42 is arranged to be vertically above thespool 22 byorienting body portion 18 in its attachment to theupper body portion 12 by a projection orrib 44 formed on the right hand end of thelower body portion 18.Rib 44 is received in a recess orgroove 46 formed in abore 48 in theupper body 12 into which is received the right hand end of thelower body portion 18. Thelower body portion 18 is retained therein by material deformation denoted byreference numeral 50 of theupper body 12 into agroove 52 formed in thelower body portion 18. - A cap or
cover 54 is disposed over the left end of thelower body portion 18 and is preferably snap-locked thereon by engagement of aninternal barb 56 provided thereon into a corresponding recess or groove in the lower body. Thecover 54 diverts and directs, e.g. baffles, flow fromreservoir port 42 to anoffset port 58 formed in the cover which may be axially or circumferentially displaced with respect to bore 20 fromreservoir port 42. Means are provided fororienting cap 54 and may be in the form of a projection orlug 60 formed thereon which engages arecess 62 formed in thebody 18 to orient theport 58 vertically abovespool 22 and in alignment with theport 42. - The present invention thus provides a baffled port for the spool dampening fluid reservoir of a solenoid operated spool valve such that a minimum amount of fluid is retained in the dampening reservoir when the reservoir port is starved by removal of the fluid source from the valve.
- Although the invention has hereinabove been described with respect to the illustrated embodiments, it will be understood that the invention is capable of modification and variation and is limited only by the following claims.
Claims (11)
1. In combination with a moveable spool therein a pressure control valve and having a spool dampening chamber comprising:
(a) a valve body, adapted for insertion in a fluid ported cavity in a device to be controlled, with an inlet, a control pressure outlet and an exhaust port communicating with a valving bore therein;
(b) a valve spool disposed in the valving chamber and moveable therein for controlling flow from the inlet to the control pressure outlet and the exhaust outlet;
(c) a fluid filled dampening reservoir formed in the body and having a bleed port therein for limited flow therethrough for providing dampening of said spool movement;
(d) a cap disposed over said bleed port and forming a baffled path for fluid flow through said bleed port for minimizing fluid drain from said reservoir upon said supply port being starved; and,
(e) a solenoid operator attached to said body and operable for effecting the spool movement.
2. The combination defined in claim 1 , wherein said baffled path includes a port in said cap offset axially with respect to said valving bore from said bleed port.
3. The combination defined in claim 1 , wherein said baffled path includes a port in said cap circumferentially aligned and axially offset from said bleed port.
4. The combination defined in claim 1 , wherein said body includes means operable for orienting said bleed port vertically on the upper region of said reservoir.
5. The combination defined in claim 1 , wherein said cap is formed of plastic material.
6. The combination defined in claim 1 , wherein said cap is received on said body in snap-locking engagement.
7. The combination defined in claim 1 , wherein said body includes means for orienting the bleed port vertically upon the attachment of the body to the solenoid operator.
8. A method of making a solenoid operated valve comprising:
(a) providing a valve body with a valving bore therein and ported with an inlet and a control pressure outlet;
(b) disposing a valving spool in the valving bore for movement therein;
(c) attaching a solenoid operator to the body and effecting said spool movement;
(d) forming a fluid dampening reservoir in said body and forming a bleed port in said reservoir; and,
(e) disposing a cap over said bleed port and forming a vent port and offsetting the vent port from the bleed port and baffling flow through the bleed port.
9. The method defined in claim 8 , wherein said step of disposing a cap includes orienting said vent port in line circumferentially with said bleed port.
10. The method defined in claim 8 , wherein said step of disposing a cap includes snap-locking the cap to the body.
11. The method defined in claim 8 , wherein said step of offsetting includes offsetting in a direction axially with respect to said valving bore.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/809,161 US6948514B1 (en) | 2004-03-25 | 2004-03-25 | Solenoid operated spool valve with baffled dampening reservoir port and method of making same |
EP05005979A EP1580469A1 (en) | 2004-03-25 | 2005-03-18 | Solenoid operated valve with hydraulic dampening |
JP2005086233A JP2005273912A (en) | 2004-03-25 | 2005-03-24 | Spool valve having baffle-like reservoir port for damping and electromagnetically operated and a method of manufacturing the same |
KR1020050024620A KR20060044700A (en) | 2004-03-25 | 2005-03-24 | Solenoid operated spool valve with baffled dampening reservoir port and method of making same |
CNA2005100589799A CN1673591A (en) | 2004-03-25 | 2005-03-25 | Solenoid operated spool valve with baffled dampening reservoir port and method of making same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/809,161 US6948514B1 (en) | 2004-03-25 | 2004-03-25 | Solenoid operated spool valve with baffled dampening reservoir port and method of making same |
Publications (2)
Publication Number | Publication Date |
---|---|
US6948514B1 US6948514B1 (en) | 2005-09-27 |
US20050211317A1 true US20050211317A1 (en) | 2005-09-29 |
Family
ID=34862092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/809,161 Expired - Fee Related US6948514B1 (en) | 2004-03-25 | 2004-03-25 | Solenoid operated spool valve with baffled dampening reservoir port and method of making same |
Country Status (5)
Country | Link |
---|---|
US (1) | US6948514B1 (en) |
EP (1) | EP1580469A1 (en) |
JP (1) | JP2005273912A (en) |
KR (1) | KR20060044700A (en) |
CN (1) | CN1673591A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090057583A1 (en) * | 2007-08-27 | 2009-03-05 | Curtis Lee Van Weelden | Dual setpoint pressure controlled hydraulic valve |
CN105715858A (en) * | 2016-04-15 | 2016-06-29 | 卢云飞 | Tap water pipeline flow control device |
CN106151497A (en) * | 2016-07-14 | 2016-11-23 | 苏州天姆艾汽车部件有限公司 | 09G automatic gear-box electromagnetic valve |
EP3524784A4 (en) * | 2016-10-10 | 2019-10-09 | Unick Corporation | Oil pump control valve |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4613576B2 (en) * | 2004-10-14 | 2011-01-19 | 株式会社ジェイテクト | solenoid valve |
US20070151614A1 (en) * | 2005-12-29 | 2007-07-05 | Dayton Robert A | Pressure regulating valve |
JP4631722B2 (en) * | 2006-01-24 | 2011-02-16 | 株式会社デンソー | solenoid valve |
US7686039B2 (en) * | 2006-06-30 | 2010-03-30 | Caterpillar Inc. | Cartridge valve assembly |
GB2451695B (en) * | 2007-08-10 | 2011-09-21 | Honeywell Normalair Garrett Ltd | Fluid control valve |
CN102308131B (en) * | 2008-12-06 | 2014-01-08 | 盾安美斯泰克有限公司 | Fluid flow control assembly |
DE102009008194B4 (en) * | 2009-02-02 | 2011-07-28 | Hansgrohe AG, 77761 | Sanitary shutdown or changeover valve |
JP5453918B2 (en) * | 2009-05-18 | 2014-03-26 | トヨタ自動車株式会社 | Flow control valve |
DE102009028092A1 (en) | 2009-07-29 | 2011-02-10 | Robert Bosch Gmbh | Pressure control valve |
US20120145252A1 (en) * | 2009-08-17 | 2012-06-14 | Dunan Microstaq, Inc. | Micromachined Device and Control Method |
DE102010004808A1 (en) * | 2010-01-18 | 2011-07-21 | Robert Bosch GmbH, 70469 | Valve controlled positive displacement machine |
US8678033B2 (en) * | 2010-03-24 | 2014-03-25 | Eaton Corporation | Proportional valve employing simultaneous and hybrid actuation |
WO2013099747A1 (en) * | 2011-12-28 | 2013-07-04 | アイシン・エィ・ダブリュ株式会社 | Spool valve and lubricating oil supply device |
JP5978900B2 (en) * | 2012-06-07 | 2016-08-24 | 株式会社ジェイテクト | solenoid valve |
WO2014106236A1 (en) * | 2012-12-31 | 2014-07-03 | Vanderbilt University | Directional control valve with spool delay mechanism |
JP5842860B2 (en) * | 2013-04-25 | 2016-01-13 | 株式会社安川電機 | Grid interconnection device |
CN104295772B (en) * | 2014-10-16 | 2016-08-17 | 江苏恒立液压科技有限公司 | Change-over valve core two-stage hydraulic control structure |
CN106438982A (en) * | 2016-08-30 | 2017-02-22 | 宁波星宇国均汽车电磁阀有限公司 | Automatic transmission clutch control electromagnetic valve |
CN106122571A (en) * | 2016-08-30 | 2016-11-16 | 航宇救生装备有限公司 | Electronics anti-G valve with mechanical backup |
CN106224536A (en) * | 2016-08-30 | 2016-12-14 | 宁波星宇国均汽车电磁阀有限公司 | Automatic gear-box Clutch Control proportional solenoid |
DE102016120118A1 (en) * | 2016-10-21 | 2018-04-26 | Hilite Germany Gmbh | Electromagnetic pressure control valve |
US20230193359A1 (en) | 2017-07-27 | 2023-06-22 | John Fred KATZ | Split G-Quadruplexes for Capture and Detection of Nucleic Acids |
DE102018118668A1 (en) * | 2018-08-01 | 2020-02-06 | ECO Holding 1 GmbH | Electromagnetic pressure control valve |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6435213B2 (en) * | 1999-04-23 | 2002-08-20 | Visteon Global Technologies, Inc. | Solenoid operated hydraulic control valve |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19847021B4 (en) * | 1998-10-13 | 2007-01-04 | Robert Bosch Gmbh | Pressure control valve |
DE19953209A1 (en) * | 1999-11-05 | 2001-06-13 | Fluidtech Gmbh | Valve, especially pressure control valve |
US6676105B2 (en) * | 2001-12-20 | 2004-01-13 | Eaton Corporation | Self-contained hydraulic dampening for a solenoid operated spool valve |
US6907901B2 (en) * | 2002-06-03 | 2005-06-21 | Borgwarner Inc. | Solenoid control valve |
DE10241449A1 (en) * | 2002-09-06 | 2004-03-18 | Robert Bosch Gmbh | Electromagnetic pressure regulation valve used in vehicle automatic transmissions, has precompressed spring transmitting stroke from armature to valve spool |
-
2004
- 2004-03-25 US US10/809,161 patent/US6948514B1/en not_active Expired - Fee Related
-
2005
- 2005-03-18 EP EP05005979A patent/EP1580469A1/en not_active Withdrawn
- 2005-03-24 JP JP2005086233A patent/JP2005273912A/en not_active Withdrawn
- 2005-03-24 KR KR1020050024620A patent/KR20060044700A/en not_active Application Discontinuation
- 2005-03-25 CN CNA2005100589799A patent/CN1673591A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6435213B2 (en) * | 1999-04-23 | 2002-08-20 | Visteon Global Technologies, Inc. | Solenoid operated hydraulic control valve |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090057583A1 (en) * | 2007-08-27 | 2009-03-05 | Curtis Lee Van Weelden | Dual setpoint pressure controlled hydraulic valve |
US8056576B2 (en) * | 2007-08-27 | 2011-11-15 | Husco Automotive Holdings Llc | Dual setpoint pressure controlled hydraulic valve |
CN105715858A (en) * | 2016-04-15 | 2016-06-29 | 卢云飞 | Tap water pipeline flow control device |
CN106151497A (en) * | 2016-07-14 | 2016-11-23 | 苏州天姆艾汽车部件有限公司 | 09G automatic gear-box electromagnetic valve |
EP3524784A4 (en) * | 2016-10-10 | 2019-10-09 | Unick Corporation | Oil pump control valve |
US11078816B2 (en) | 2016-10-10 | 2021-08-03 | Unick Corporation | Oil pump control valve |
Also Published As
Publication number | Publication date |
---|---|
EP1580469A1 (en) | 2005-09-28 |
CN1673591A (en) | 2005-09-28 |
KR20060044700A (en) | 2006-05-16 |
JP2005273912A (en) | 2005-10-06 |
US6948514B1 (en) | 2005-09-27 |
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