EP1319832B1 - Electromagnetically operated pump - Google Patents
Electromagnetically operated pump Download PDFInfo
- Publication number
- EP1319832B1 EP1319832B1 EP02102744A EP02102744A EP1319832B1 EP 1319832 B1 EP1319832 B1 EP 1319832B1 EP 02102744 A EP02102744 A EP 02102744A EP 02102744 A EP02102744 A EP 02102744A EP 1319832 B1 EP1319832 B1 EP 1319832B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- pump
- piston element
- coil
- keeper
- 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
- 238000005086 pumping Methods 0.000 claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 5
- 239000003302 ferromagnetic material Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 5
- 230000005291 magnetic effect Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
- F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor
Definitions
- the present invention concerns an electromagnetically operated pump to feed two-stroke internal-combustion engines with precise and controlled amounts of oil.
- the present invention concerns a pump of this type, the structure of which - while preserving the characteristics of a simple construction, a metering precision and an easy setting, which are indispensable for the specific use for which the pump is designed - allows to considerably reduce its overall dimensions and guarantees an improved reliability thereof.
- the pump according to the invention - of the type as described in the introductory part of Claim 1 is characterized from the features pointed out in the characterizing part of Claim 1.
- said piston element is of nonmagnetic material and said annular coil is housed into a cavity of the cylinder formed on the front of said keeper in said second base of the cylinder.
- a disk is interposed between said second base of the cylinder and said keeper, said disk having a central hole through which said piston element freely passes.
- the spring means act between said disk and said keeper, opposing the movements of the piston element controlled by said coil, said spring means being positioned close to the hole of said disk, or close to its periphery.
- the spring means are housed peripherally into the pumping chamber, so as to act directly on the piston element, in correspondence of its first end.
- Said spring means preferably consist of a cylindrical helicoidal spring, coaxial to the cylinder of said pump.
- the piston element is suitably formed - in the different variants of the aforedescribed embodiment - with a portion of reduced diameter towards its second end, the extension of said portion contributing to determine the capacity of the pump.
- the piston element has instead a constant diameter and the capacity of the pump depends on the distance between the keeper and the cylinder, when the keeper is subject merely to the action of the spring means which oppose the movements of the piston element controlled by said coil.
- spring means can consist of a Belleville washer, coaxial to the cylinder of the pump and interposed between said second base of the cylinder and said keeper, or of a cylindrical helicoidal spring housed peripherally into the pumping chamber.
- Fig. 1 is an axial section view of a first embodiment of the pump according to the present invention
- Fig. 2 shows a detail of the pump of fig. 1 , along the line II-II thereof;
- Fig. 3 illustrates a first variant of the embodiment of the pump shown in fig. 1 ;
- Fig. 4 illustrates a second variant of the embodiment of the pump shown in fig. 1 ;
- Fig. 5 shows a second embodiment of the pump according to the present invention, illustrating a first variant thereof
- Fig. 6 illustrates a second variant of the embodiment of the pump shown in fig. 5 ;
- Fig. 7 shows a detail of the pump of fig. 6 , along the line VII-VII thereof.
- the pump according to the present invention is of the type comprising - as clearly illustrated - a casing 1 housing a cylinder 2 and a piston element 3, axially movable in the cylinder 2 and crossed by a through pipe 4 connected to pipe unions 5 and 6 in the casing 1, for the inlet and respectively the outlet of oil.
- a pumping chamber 8 Close to a first base 7 of the cylinder 2, in contact with the casing 1 and along the corresponding pipe union 6, there is a pumping chamber 8 to pump the oil to be fed, said chamber also housing valve means of the pump, as described hereinafter.
- a cavity 10 is formed close to the second base 9 of the cylinder 2, into said cavity there being housed a compact electromagnetic annular coil 11 which surrounds the piston element 3 and which is fed with pulse current in strict correlation with the running of the two-stroke engine to be equipped with the pump.
- the depth of the cavity 10 slightly exceeds the height of the coil 11, so that this latter can be fully housed therein and be efficiently protected.
- the piston element 3 is connected, at its end 12 in correspondence of the base 9 of the cylinder 2, to a keeper 13 parallel and close to said base 9.
- the electromagnetic coil 11 acts frontwards onto said keeper 13 - which is of ferromagnetic material - against the action of spring means.
- the keeper 13 draws in its movements the piston element 3, preferably made of nonmagnetic material. Thanks to the efficiency of the frontward action - with a low magnetic gap and a magnetic circuit with low reluctance - of the electromagnetic coil 11 on the keeper 13, the movements of the piston element 3 of the pump according to the invention can be controlled by means of a coil 11 of very small dimensions and having a very compact structure.
- the efficiency of said action is in fact far higher than that which could be obtained up to date in the pumps having coils usually extending along the whole cylinder of the pump, externally thereof, and acting directly onto a piston of ferromagnetic material in an axial sense, in magnetic circuits with a very high reluctance.
- the arrangement of the present invention thus allows to considerably reduce the overall dimensions of the pump, providing an advantage which is particularly important for the applications pointed out in the introductory part of the present description, such as feeding oil in two-stroke internal combustion engines.
- a disk 14 is interposed between the second base 9 of the cylinder 2 and the keeper 13, said disk 14 preferably being of nonmagnetic material and having a central hole through which freely passes the end 12 of said piston element 3 having a portion 12A of reduced diameter ( fig. 2 ); the portion of wider diameter of said piston element 3 stops instead against said disk 14.
- Spring means act between said disk 14 and said keeper 13 opposing the movements of the piston element 3 controlled by the coil 11.
- said spring means are centrally positioned - in 15 - close to the hole of the disk 14; whereas, in the variant of fig.
- said spring means consist of a cylindrical helicoidal spring 17, coaxial to the cylinder 2 and housed peripherally into the pumping chamber 8.
- the spring 17 acts directly onto the piston element 3, in correspondence of its first end, opposite to that fixed to the keeper 13.
- the piston element 3 has a constant diameter, it being obtained from a ground bar (thereby reducing the costs in respect of the previous embodiment).
- the coil 11 controls, when energized, the movements of the piston element 3 towards the chamber 8, while attracting the keeper 13 against the action of the spring means 15, 16 or 17.
- Such means produce movements in the opposite sense when the coil 11 is deenergized.
- Two ball valves 19 and 20 are provided, in known manner, in the pipe union 6 in the casing 1, in correspondence of the oil pumping chamber 8, the valve 19 cooperating with the end of the piston element 3 in correspondence of the base 7 of the cylinder 2.
- the valve 19 is closed while the valve 20 opens.
- the valve 20 closes while the valve 19 opens again.
- Fig. 2 shows a detail of fig. 1 , illustrating how the capacity of the oil being pumped, for each stroke of the pump according to the invention, may be determined by varying the distance a-b in fig. 1 , namely the ratio between the length of the portion of wider diameter and the length of the portion 12A of reduced diameter of the piston element 3. This obviously also applies to the other variants of the pump adopting a similar piston element 3 ( figs. 3 and 4 ).
- the capacity of the oil being pumped for each stroke of the pump is instead determined, as clearly shown in fig. 7 , by the distance a-b between the keeper 13 and the base 9 of the cylinder 2, when said keeper is subject merely to the action of the spring means 18 or 17 and the coil 11 is deenergized.
- the aforedescribed pump has a very simple structure and a highly reliable working but, above all - as already mentioned - it allows to drastically limit the dimensions of the electric circuit and of the coil controlling the movements of the piston element; this considerably affects the overall dimensions of the pump, so as to be able to assert that it leads to a miniaturization thereof.
- the pump according to the invention can moreover be easily adapted, with reduced costs, to the most different requirements of capacity, by simply varying the axial position of the abutment of the piston element 3, formed in two portions of different diameter.
- the pump is instead less versatile, but it involves lower production costs.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
- Surgical Instruments (AREA)
- External Artificial Organs (AREA)
Abstract
Description
- The present invention concerns an electromagnetically operated pump to feed two-stroke internal-combustion engines with precise and controlled amounts of oil.
- According to known technique, there are many types of pumps which allow to feed two-stroke internal-combustion engines with precise and controlled amounts of oil, strictly correlated with the running of said engines. Amongst others, use has already been made since quite some time of electrically operated pumps, in which an electromagnetic coil controls the piston of a cylinder in axis therewith, against the action of a spring, so as to empty at each running cycle a pumping chamber of said cylinder into which the oil to be fed is metered.A pump of this type is known from
GB-A-2.198.191 - The present invention concerns a pump of this type, the structure of which - while preserving the characteristics of a simple construction, a metering precision and an easy setting, which are indispensable for the specific use for which the pump is designed - allows to considerably reduce its overall dimensions and guarantees an improved reliability thereof.
- For this purpose, the pump according to the invention - of the type as described in the introductory part of
Claim 1 is characterized from the features pointed out in the characterizing part ofClaim 1. Preferably, said piston element is of nonmagnetic material and said annular coil is housed into a cavity of the cylinder formed on the front of said keeper in said second base of the cylinder. - In a first embodiment of the pump according to the present invention, a disk is interposed between said second base of the cylinder and said keeper, said disk having a central hole through which said piston element freely passes. The spring means act between said disk and said keeper, opposing the movements of the piston element controlled by said coil, said spring means being positioned close to the hole of said disk, or close to its periphery. Alternatively, the spring means are housed peripherally into the pumping chamber, so as to act directly on the piston element, in correspondence of its first end. Said spring means preferably consist of a cylindrical helicoidal spring, coaxial to the cylinder of said pump.
- According to the invention, the piston element is suitably formed - in the different variants of the aforedescribed embodiment - with a portion of reduced diameter towards its second end, the extension of said portion contributing to determine the capacity of the pump.
- In a second embodiment of the pump according to the present invention, the piston element has instead a constant diameter and the capacity of the pump depends on the distance between the keeper and the cylinder, when the keeper is subject merely to the action of the spring means which oppose the movements of the piston element controlled by said coil. Such spring means can consist of a Belleville washer, coaxial to the cylinder of the pump and interposed between said second base of the cylinder and said keeper, or of a cylindrical helicoidal spring housed peripherally into the pumping chamber.
- The invention will now be described in further detail, with reference to the accompanying drawings, in which:
-
Fig. 1 is an axial section view of a first embodiment of the pump according to the present invention; -
Fig. 2 shows a detail of the pump offig. 1 , along the line II-II thereof; -
Fig. 3 illustrates a first variant of the embodiment of the pump shown infig. 1 ; -
Fig. 4 illustrates a second variant of the embodiment of the pump shown infig. 1 ; -
Fig. 5 shows a second embodiment of the pump according to the present invention, illustrating a first variant thereof; -
Fig. 6 illustrates a second variant of the embodiment of the pump shown infig. 5 ; and -
Fig. 7 shows a detail of the pump offig. 6 , along the line VII-VII thereof. - With reference to the drawings, the pump according to the present invention is of the type comprising - as clearly illustrated - a
casing 1 housing acylinder 2 and apiston element 3, axially movable in thecylinder 2 and crossed by athrough pipe 4 connected topipe unions casing 1, for the inlet and respectively the outlet of oil. Close to afirst base 7 of thecylinder 2, in contact with thecasing 1 and along thecorresponding pipe union 6, there is apumping chamber 8 to pump the oil to be fed, said chamber also housing valve means of the pump, as described hereinafter. Acavity 10 is formed close to thesecond base 9 of thecylinder 2, into said cavity there being housed a compact electromagneticannular coil 11 which surrounds thepiston element 3 and which is fed with pulse current in strict correlation with the running of the two-stroke engine to be equipped with the pump. The depth of thecavity 10 slightly exceeds the height of thecoil 11, so that this latter can be fully housed therein and be efficiently protected. - According to the invention, the
piston element 3 is connected, at itsend 12 in correspondence of thebase 9 of thecylinder 2, to akeeper 13 parallel and close to saidbase 9. Theelectromagnetic coil 11 acts frontwards onto said keeper 13 - which is of ferromagnetic material - against the action of spring means. Thekeeper 13 draws in its movements thepiston element 3, preferably made of nonmagnetic material. Thanks to the efficiency of the frontward action - with a low magnetic gap and a magnetic circuit with low reluctance - of theelectromagnetic coil 11 on thekeeper 13, the movements of thepiston element 3 of the pump according to the invention can be controlled by means of acoil 11 of very small dimensions and having a very compact structure. The efficiency of said action is in fact far higher than that which could be obtained up to date in the pumps having coils usually extending along the whole cylinder of the pump, externally thereof, and acting directly onto a piston of ferromagnetic material in an axial sense, in magnetic circuits with a very high reluctance. The arrangement of the present invention thus allows to considerably reduce the overall dimensions of the pump, providing an advantage which is particularly important for the applications pointed out in the introductory part of the present description, such as feeding oil in two-stroke internal combustion engines. - The pump according to the present invention can be conceived in different embodiments, some of which are illustrated on the accompanying drawings.
- In a first embodiment (
figs. 1 to 4 ), adisk 14 is interposed between thesecond base 9 of thecylinder 2 and thekeeper 13, saiddisk 14 preferably being of nonmagnetic material and having a central hole through which freely passes theend 12 of saidpiston element 3 having aportion 12A of reduced diameter (fig. 2 ); the portion of wider diameter of saidpiston element 3 stops instead against saiddisk 14. Spring means act between saiddisk 14 and saidkeeper 13 opposing the movements of thepiston element 3 controlled by thecoil 11. In the embodiment offigs. 1 and2 , said spring means are centrally positioned - in 15 - close to the hole of thedisk 14; whereas, in the variant offig. 3 , they are positioned - in 16 - close to the periphery of thedisk 14. Alternatively, in the variant offig. 4 , said spring means consist of a cylindricalhelicoidal spring 17, coaxial to thecylinder 2 and housed peripherally into thepumping chamber 8. Instead of acting on the keeper 13 - like thesprings 15 and 16 - thespring 17 acts directly onto thepiston element 3, in correspondence of its first end, opposite to that fixed to thekeeper 13. - In a second embodiment (
figs. 5 and6 ), thepiston element 3 has a constant diameter, it being obtained from a ground bar (thereby reducing the costs in respect of the previous embodiment). - In the variant of
fig. 5 , there is nodisk 14, while a simple Bellevillewasher 18 is interposed between thesecond base 9 of thecylinder 2 and thekeeper 13, said washer being coaxial to thecylinder 2. In this variant, thewasher 18 obviously forms said spring means which oppose the movements of thepiston element 3 controlled by thecoil 11. Whereas, in the variant offig. 6 , such spring means consist of a cylindrical helicoidal spring 17 - like that of the variant offig. 4 - coaxial to thecylinder 2 and housed peripherally into thepumping chamber 8. - In operation, the
coil 11 controls, when energized, the movements of thepiston element 3 towards thechamber 8, while attracting thekeeper 13 against the action of the spring means 15, 16 or 17. Such means produce movements in the opposite sense when thecoil 11 is deenergized. Twoball valves pipe union 6 in thecasing 1, in correspondence of theoil pumping chamber 8, thevalve 19 cooperating with the end of thepiston element 3 in correspondence of thebase 7 of thecylinder 2. As better seen hereinafter, when thekeeper 13 is attracted by theelectromagnetic coil 11 and thepiston element 3 moves towards thepipe union 6, thevalve 19 is closed while thevalve 20 opens. Viceversa, when thepiston element 3 is moved back by the spring means 15, or 16, or 17, thevalve 20 closes while thevalve 19 opens again. -
Fig. 2 shows a detail offig. 1 , illustrating how the capacity of the oil being pumped, for each stroke of the pump according to the invention, may be determined by varying the distance a-b infig. 1 , namely the ratio between the length of the portion of wider diameter and the length of theportion 12A of reduced diameter of thepiston element 3. This obviously also applies to the other variants of the pump adopting a similar piston element 3 (figs. 3 and4 ). - For what concerns the other embodiment of the pump according to the invention, illustrated in
fig. 5 , and its variant illustrated infig. 6 , wherein thepiston element 3 has a constant diameter, the capacity of the oil being pumped for each stroke of the pump is instead determined, as clearly shown infig. 7 , by the distance a-b between thekeeper 13 and thebase 9 of thecylinder 2, when said keeper is subject merely to the action of thespring means coil 11 is deenergized. - Thanks to the special configuration of its original magnetic circuit, the aforedescribed pump has a very simple structure and a highly reliable working but, above all - as already mentioned - it allows to drastically limit the dimensions of the electric circuit and of the coil controlling the movements of the piston element; this considerably affects the overall dimensions of the pump, so as to be able to assert that it leads to a miniaturization thereof. In the first embodiment of
fig. 1 , and its variants offigs. 3 and4 , the pump according to the invention can moreover be easily adapted, with reduced costs, to the most different requirements of capacity, by simply varying the axial position of the abutment of thepiston element 3, formed in two portions of different diameter. - In the simpler embodiment of
fig. 5 , and its variant offig. 6 , the pump is instead less versatile, but it involves lower production costs. - It is anyhow understood that there can be other embodiments of the pump, differing from those described heretofore, without thereby departing from the scope of the present invention.
Claims (12)
- Electromagnetically operated pump to feed two-stroke internal-combustion engines with precise and controlled amounts of oil - of the type comprising, in a casing (1) : a cylinder (2); a piston element (3) with a through pipe (4), axially movable in said cylinder (2); an electromagnetic coil (11) coaxial to the cylinder (2), to control the movements of the piston element (3) against the action of spring means (15, 16, 17, 18); a pumping chamber (8) for the oil to be fed, coaxial to the cylinder (2) and close to a first base (7) thereof; and valve means (19, 20) housed in said casing (1) and in said chamber (8), one of said means (19) cooperating with a first end of said piston element (3) - characterized in that, the electromagnetic coil (11) is an annular coil which surrounds the piston element (3), acts frontwards onto a keeper (13) of ferromagnetic material, being housed into a cavity (10) of the cylinder (2) formed, on the front of said keeper (13), in said second base (9) of the cylinder (2), said keeper being close and parallel to the second base (9) of the cylinder (2) and connected to the second end (12) of the piston element (3), said second end (12) projecting from said second base (9) of the cylinder (2).
- Pump as in claim 1), wherein the piston element (3) is of nonmagnetic material.
- Pump as in claim 1), wherein said cavity (10) of the cylinder (2) housing the coil (11) has a depth which slightly exceeds the height of said coil (11).
- Pump as in claim 1), wherein a disk (14) is interposed between said second base (9) of the cylinder (2) and said keeper (13), said disk (14) having a central hole through which said piston element (3) freely passes, between said disk (14) and said keeper (13) acting the spring means (15, 16) which oppose the movements of the piston element (3) controlled by said coil (11).
- Pump as in claim 4), wherein said spring means (15) are positioned close to the hole of said disk (19).
- Pump as in claim 4), wherein said spring means (16) are positioned close to the periphery of the disk (14).
- Pump as in claims 4) to 6), wherein the spring means (17) consist of a cylindrical helicoidal spring, coaxial to the cylinder (2) of the pump.
- Pump as in claims 4) to 7), wherein said disk (14) is of nonmagnetic material.
- Pump as in anyone of the claims 1) to 8), wherein the piston element (3) is formed with a portion of wider diameter and a portion of reduced diameter (12A) towards its second end (12).
- Pump as in claims 1) to 3), wherein the piston element (3) has a constant diameter.
- Pump as in claim 1), wherein a Belleville washer (18) is interposed between said second base (9) of the cylinder (2) and said keeper (13), coaxial to the cylinder (2) of the pump, said washer (18) forming the spring means which oppose the movements of the piston element (3) controlled by said coil (11).
- Pump as in claim 1), wherein the spring means which oppose the movements of the piston element (3) controlled by said coil (11) consist of a cylindrical helicoidal spring (17), housed peripherally into the pumping chamber (8) and acting directly on the piston element (3), in correspondence of its first end.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2001MI002647A ITMI20012647A1 (en) | 2001-12-13 | 2001-12-13 | PUMP CONTROLLED BY ELECTROMAGNET |
ITMI20012647 | 2001-12-13 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1319832A2 EP1319832A2 (en) | 2003-06-18 |
EP1319832A3 EP1319832A3 (en) | 2004-01-21 |
EP1319832B1 true EP1319832B1 (en) | 2008-04-09 |
Family
ID=11448694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02102744A Expired - Lifetime EP1319832B1 (en) | 2001-12-13 | 2002-12-12 | Electromagnetically operated pump |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1319832B1 (en) |
AT (1) | ATE391837T1 (en) |
DE (1) | DE60225996D1 (en) |
IT (1) | ITMI20012647A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE602004008596T2 (en) * | 2004-06-11 | 2007-12-27 | Olab S.R.L., Torbole Casaglia | The vibration pump |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1102555A (en) * | 1964-03-14 | 1968-02-07 | Eberspaecher Walter | Electromagnetically-actuated reciprocating piston pumps for liquids |
US3479959A (en) * | 1967-10-23 | 1969-11-25 | William N Christensen | Electromagnetic metering pump |
FR2606073A1 (en) * | 1986-10-14 | 1988-05-06 | Orbital Eng Pty | IMPROVED LUBRICATION SYSTEM AND PUMP FOR INTERNAL COMBUSTION ENGINES |
FR2641338A1 (en) * | 1988-12-30 | 1990-07-06 | Peugeot Motocycles | LOW FLOW PUMP, PARTICULARLY FOR LUBRICATING A TWO-STROKE ENGINE |
IT1299987B1 (en) * | 1998-04-27 | 2000-04-04 | Magneti Marelli Spa | VOLUMETRIC PUMP. |
-
2001
- 2001-12-13 IT IT2001MI002647A patent/ITMI20012647A1/en unknown
-
2002
- 2002-12-12 EP EP02102744A patent/EP1319832B1/en not_active Expired - Lifetime
- 2002-12-12 AT AT02102744T patent/ATE391837T1/en not_active IP Right Cessation
- 2002-12-12 DE DE60225996T patent/DE60225996D1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE60225996D1 (en) | 2008-05-21 |
ITMI20012647A1 (en) | 2003-06-13 |
ATE391837T1 (en) | 2008-04-15 |
EP1319832A3 (en) | 2004-01-21 |
EP1319832A2 (en) | 2003-06-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6619269B1 (en) | Fuel injector | |
JP3142038B2 (en) | solenoid valve | |
US4580760A (en) | Fluid control valves | |
US4015912A (en) | Electromagnetic pumping device for liquids | |
KR102178299B1 (en) | Fuel pump and inlet valve assembly thereof | |
US4540122A (en) | Electromagnetic unit fuel injector with pivotable armature | |
JP2000145623A (en) | Electromagnetic pump | |
EP1319832B1 (en) | Electromagnetically operated pump | |
CN103975157A (en) | Valve assembly for a control valve and control valve | |
US4352645A (en) | Solenoid pump adapted for noiseless operation | |
JP2013167194A (en) | Fuel injection valve | |
US20180230955A1 (en) | Electromagnetic Switching Valve and High-Pressure Fuel Pump | |
US20080271708A1 (en) | Fuel Metering Unit For a High-Pressure Fuel Pump, and High-Pressure Fuel Pump | |
JP5502806B2 (en) | Solenoid valve and high-pressure pump using the same | |
JP2002048031A (en) | Fuel injector | |
US20150104338A1 (en) | Electromagnetic Pump | |
EP1236894B1 (en) | Electromagnetically operated pump | |
JP6417971B2 (en) | Suction metering valve | |
US2533164A (en) | Electromagnetic pump | |
US1664607A (en) | Fuel-injection system | |
EP1236895B1 (en) | Electromagnetically operated pump | |
JP5157976B2 (en) | Flow control solenoid valve | |
JP3686452B2 (en) | Fuel injector with electromagnetic adjustable valve | |
AU2005100566A4 (en) | A Fluid Pumping Means | |
US2497105A (en) | Circuit breaker arrangement for electromagnetically operated reciprocating devices |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7F 01M 1/02 A Ipc: 7F 04B 17/04 B |
|
17P | Request for examination filed |
Effective date: 20040719 |
|
AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20070622 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REF | Corresponds to: |
Ref document number: 60225996 Country of ref document: DE Date of ref document: 20080521 Kind code of ref document: P |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080409 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080409 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080909 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080720 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080709 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080409 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080409 |
|
EN | Fr: translation not filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080409 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080409 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080709 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080409 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080409 |
|
26N | No opposition filed |
Effective date: 20090112 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080409 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20090130 Ref country code: DE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080710 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081231 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20081212 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080409 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081231 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081212 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081212 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081212 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080409 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20080710 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20101130 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20111212 |