EP1563190A2 - Vakuumpumpe - Google Patents
VakuumpumpeInfo
- Publication number
- EP1563190A2 EP1563190A2 EP03779691A EP03779691A EP1563190A2 EP 1563190 A2 EP1563190 A2 EP 1563190A2 EP 03779691 A EP03779691 A EP 03779691A EP 03779691 A EP03779691 A EP 03779691A EP 1563190 A2 EP1563190 A2 EP 1563190A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum pump
- pump
- wing
- residual oil
- bypass
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/04—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for reversible pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2220/00—Application
- F04C2220/10—Vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2250/00—Geometry
- F04C2250/10—Geometry of the inlet or outlet
- F04C2250/101—Geometry of the inlet or outlet of the inlet
Definitions
- the invention relates to a vacuum pump, in particular for brake boosters for motor vehicles, the pump normally being driven by the motor vehicle internal combustion engine in one direction of rotation (“forward”).
- the vacuum pumps accordingly have a fixed direction of rotation. Vacuum pumps of this type are known.
- a vacuum pump in particular for brake boosters for motor vehicles, the pump normally being driven in one direction of rotation (“forward”) by the motor vehicle internal combustion engine, the vacuum pump having a device which serves to prevent damage when turning backwards Device an outlet valve for the residual oil to the cylinder head of the internal combustion engine.
- An additional valve is provided which opens a path for the oil to the cylinder head when running in reverse. During normal operation of the pump, this check valve is closed and does not allow any air from the cylinder head into the air as external air
- This pump is preferably combined with the pump outlet valve so that a spring plate valve has two tongues and is secured with a screw.
- a vacuum pump in which the device has a bypass device for the residual oil is also preferred.
- a bypass device preferably designed as a swivel wing, is installed in the pump housing. is positioned.
- the swivel wing is in contact with the rotor, which can be caused by a pressure difference and / or a spring force.
- the pressure in front of the wing causes the swivel wing to lift off, clearing the way for the residual oil, either to the cylinder head or to the other side of the wing.
- the pivoting wing device is preferably used in a pump with a mono-wing without movable caps, because the mono-wing then always rests on the opposite side due to the centrifugal force and thus has no contact with the pivoting wing.
- the swivel wing is preferably designed as a plastic part, but can also be designed as a sheet metal part and can be shown either pivotable or elastically deformable.
- a vacuum pump is preferred in which the device has a bypass groove.
- a bypass groove is preferably arranged in the housing and / or cover in the region of the air inlet opening, that is to say the suction port. This bypass enables the residual oil to flow back past the wing and in this way to avoid pressure peaks caused by residual oil being pushed back when running backwards.
- a vacuum pump is also preferred in which the device has a storage volume for residual oil. Pressure peaks due to the residual oil can therefore be avoided by pushing the residual oil into the storage volume when the pump is turned backwards, so that the pump can rotate backwards without residual oil in front of the wing and thus without crushing oil.
- This memory can be accommodated in the pump housing.
- the suction hose of the pump or part of the suction hose can also be used as a storage volume.
- the suction valve is not arranged in the suction port of the pump, but in the suction hose.
- the volume between the suction valve and the pump chamber should preferably be designed so large that it is greater than the maximum residual oil volume that occurs.
- Another pump according to the invention is characterized in that the device has a bypass in the cover.
- a pressure-dependent bypass is integrated in the cover of the pump, which opens at an increased pressure upstream of the suction valve and allows oil to flow out of this area into the other pump chamber and / or to the inner rotor bore.
- This bypass can be designed as a resilient sheet which lies on the inside of the cover and which can be at least partially pushed away into corresponding recesses in the cover when subjected to pressure.
- the bypass can be designed as a piston in the cover.
- a vacuum pump is preferred in which the rotor has a clamping roller freewheel which blocks the connection between the rotor and drive element, such as a clutch, in one direction of rotation (“forwards”), and clamps, and in the opposite direction of rotation (“backwards”). allows the drive element to run freely without the rotor taking part in the reverse rotation.
- the freewheel can be pressed onto the rotor, the known sliding bearing between the rotor and the pump housing being replaced by the roller bearing of the pinch roller freewheel.
- Figure 1 shows a pump with an outlet valve for the residual oil.
- Figure 2 shows a bypass designed as a swivel wing for the residual oil.
- Figure 3 shows a bypass groove in the housing for the residual oil.
- a vacuum pump 1 is shown in perspective.
- the vacuum pump has a housing 3, in which an eccentrically arranged rotor with a mono-wing is not visible here.
- Such vacuum pumps are known in their construction and function and are therefore not to be explained further.
- the direction of rotation of the rotor is shown on the housing by an arrow 5, so that it can be seen that in this direction of rotation the delivery volume increases in area 7 when the rotor rotates and thus leads to suction and in delivery area 9 the pump volume decreases and thus leads to the ejection of the funding.
- the funding is therefore in area 7 via Suction nozzle 11 sucked in and then ejected via an outlet valve 13 when upper dead center is exceeded and the delivery volume in region 9 is reduced.
- an additional valve 15 is therefore arranged, which opens when turning backwards towards the cylinder head and can drain the residual oil into this area, that is to say analogously to how the outlet valve 13 normally behaves in the normal delivery direction 5.
- the outlet valve 15 remains closed for the residual oil, since negative pressure builds up in the region 7 and therefore the atmospheric pressure in the cylinder head keeps the tongue valve 15 closed.
- the valve 15 for reverse running is combined with the pump outlet valve 13, so that a spring plate valve has two tongues and is secured with a screw 17.
- FIG. 1b The corresponding individual parts of the valves are shown in the disassembled state in FIG. 1b.
- the screw 17 fixes the hold-down device 19 and the spring tongue valve 23 of the pump outlet valve 13 as well as the hold-down device 21 and the spring tongue 25 of the reverse flow valve 15.
- the spring tongue 23 of the pump outlet valve 13 closes the pump outlet opening 27 in the unpressurized state, while the spring tongue 25 of the reverse flow valve 15 closes the outlet opening 29 closes in the normal direction of rotation of the pump.
- a very simple combination of the outlet valve 13 with the reverse flow valve 15 thus provides a reliable solution to the pump's reverse flow problems without the need for additional components. Only the hold-down device of the outlet valve has to be extended by the region 21 and the spring tongue 23 of the outlet valve by the region 25.
- FIG. 2 shows a bypass device for the residual oil when turning backwards in the form of a swivel wing device.
- a rotor 30, which simplifies here without the mono wing is shown, is arranged eccentrically in a housing 32.
- the housing 32 has a bulge 34 in which a swivel wing device 36 is arranged.
- the swivel wing device 36 lies in the area 38 in a sealing manner against the rotor.
- the direction of rotation of the rotor in normal operation is indicated by arrow 40.
- the swivel blade is in sealing contact with the rotor, the pressure zone of the vacuum pump being in area 48 and the suction zone of the vacuum pump in area 50.
- the rotor and the housing can have approximately the same radius of curvature over an angular range ⁇ , here with the reference number 46 between the housing 32 and the rotor 30, so that a good sealing gap sealing is also possible is present when the swivel wing performs its actual safety function when reversing.
- This narrow gap seal also prevents pressure peaks from causing the mono wing to lift off.
- the suction area 50 suddenly becomes a pressure area, in which area a pressure peak can then build up as a result of the squeezed oil pressed backwards.
- This pressure peak is then relieved by opening the swivel wing 36 in the area 42, which is connected to the cylinder head area.
- region 42 the pressure in the cylinder head region normally prevails, which corresponds approximately to the atmospheric pressure.
- a mono-wing without movable caps is used in a pump with this swivel-wing device, because the mono-wing then always rests on the opposite side due to the centrifugal force and thus has no contact with the swivel wing 36.
- the swivel wing 36 itself can be pressed against the rotor 30 in a sealing manner both by a spring force 44 and by the pressure force of the pressure in the area 42.
- a bypass groove 54 on the rear side 52 of the pump housing 3 is shown in FIG. 3 as a reverse run relief device.
- the bypass groove 54 is arranged in the suction area of the pump and thus in the area of the suction nozzle 11.
- the outlet opening 56 of the outlet valve is located opposite when the pump is rotated in the normal direction of rotation 40. If the pump runs the other way around when the internal combustion engine is turned backwards, the bypass groove 54 can push the pinch oil to the side past the wing to the rear, thereby avoiding the build-up of pressure peaks.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07022290A EP1890040B1 (de) | 2002-11-13 | 2003-11-12 | Vakuumpumpe |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10252769 | 2002-11-13 | ||
DE10252769 | 2002-11-13 | ||
PCT/DE2003/003747 WO2004044431A2 (de) | 2002-11-13 | 2003-11-12 | Vakuumpumpe |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07022290A Division EP1890040B1 (de) | 2002-11-13 | 2003-11-12 | Vakuumpumpe |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1563190A2 true EP1563190A2 (de) | 2005-08-17 |
Family
ID=32308526
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07022290A Expired - Lifetime EP1890040B1 (de) | 2002-11-13 | 2003-11-12 | Vakuumpumpe |
EP03779691A Withdrawn EP1563190A2 (de) | 2002-11-13 | 2003-11-12 | Vakuumpumpe |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07022290A Expired - Lifetime EP1890040B1 (de) | 2002-11-13 | 2003-11-12 | Vakuumpumpe |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP1890040B1 (de) |
AU (1) | AU2003287863A1 (de) |
DE (1) | DE10393279D2 (de) |
WO (1) | WO2004044431A2 (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004034922B4 (de) * | 2004-07-09 | 2006-05-11 | Joma-Hydromechanic Gmbh | Einflügelvakuumpumpe |
DE102004034926B3 (de) * | 2004-07-09 | 2005-12-29 | Joma-Hydromechanic Gmbh | Einflügelvakuumpumpe |
WO2006122515A1 (de) * | 2005-05-19 | 2006-11-23 | Ixetic Hückeswagen Gmbh | Pumpe mit freilauf-rutschkupplung |
DE102005031718A1 (de) | 2005-07-07 | 2007-01-18 | Leybold Vacuum Gmbh | Vakuum-Drehschieberpumpe |
DE112007001540B4 (de) * | 2006-07-21 | 2016-05-12 | Magna Powertrain Hückeswagen GmbH | Vakuumpumpe |
DE102007010729B3 (de) * | 2007-01-04 | 2008-04-24 | Joma-Polytec Kunststofftechnik Gmbh | Vakuumpumpe |
DE102007018247A1 (de) * | 2007-04-12 | 2008-10-16 | Joma-Hydromechanic Gmbh | Vakuumpumpe |
DE102009016048B4 (de) * | 2009-04-02 | 2018-05-30 | Bayerische Motoren Werke Aktiengesellschaft | Pumpe für eine Kraftfahrzeug-Brennkraftmaschine sowie Kraftfahrzeug-Brennkraftmaschine mit Pumpe |
GB0907607D0 (en) * | 2009-05-01 | 2009-06-10 | Wabco Automotive Uk Ltd | Vacuum pump |
DE102010026032A1 (de) * | 2010-07-03 | 2012-01-05 | Mahle International Gmbh | Flatterventil und Drehschieberpumpe |
ITTO20131083A1 (it) | 2013-12-30 | 2015-07-01 | Vhit Spa | Pompa rotativa con valvola di sicurezza e metodo di funzionamento |
DE102016202426A1 (de) * | 2016-02-17 | 2017-08-17 | Mahle International Gmbh | Rückschlagventil für eine Vakuumpumpe |
DE102016207123A1 (de) * | 2016-04-27 | 2017-11-02 | Mahle International Gmbh | Rückschlagventil für eine Vakuumpumpe |
DE102016207115A1 (de) * | 2016-04-27 | 2017-11-02 | Mahle International Gmbh | Rückschlagventil für eine Vakuumpumpe |
JP6534647B2 (ja) | 2016-11-03 | 2019-06-26 | 大豊工業株式会社 | ベーンポンプ |
JP6613222B2 (ja) | 2016-11-03 | 2019-11-27 | 大豊工業株式会社 | ベーンポンプ |
DE102016122903A1 (de) * | 2016-11-28 | 2018-05-30 | Schwäbische Hüttenwerke Automotive GmbH | Gaspumpe mit Ölrückführung |
DE102017123695A1 (de) * | 2017-10-11 | 2019-04-11 | Schwäbische Hüttenwerke Automotive GmbH | Rotationspumpe |
DE102017128972A1 (de) * | 2017-12-06 | 2019-06-06 | Joma-Polytec Gmbh | Vakuumpumpe |
DE102020111301A1 (de) * | 2020-04-24 | 2021-10-28 | Schwäbische Hüttenwerke Automotive GmbH | Vakuumpumpe |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0749094A (ja) | 1993-08-05 | 1995-02-21 | Hitachi Ltd | ベーン式真空ポンプ |
JP2000205159A (ja) | 1999-01-11 | 2000-07-25 | Hitachi Ltd | ベ―ン式真空ポンプ |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1926797A1 (de) * | 1969-05-24 | 1970-11-26 | Gerspach Dr Phil Wolfram | Vakuumrueckschlagventil,insbesondere fuer Bremskraftverstaerker 100000 |
CH553332A (de) * | 1972-06-13 | 1974-08-30 | Burckhardt Ag Maschf | Einrichtung zur regulierung des arbeitsmitteldruckes in einer fluessigkeitsringpumpe. |
DE2613472A1 (de) * | 1976-03-30 | 1977-10-13 | Hori Technical Lab Ltd | Trockenlaufender verdichter |
DE2629337C2 (de) * | 1976-06-30 | 1986-08-07 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Flügelzellenvakuumpumpe |
JPS61109975A (ja) * | 1984-11-02 | 1986-05-28 | Hitachi Koki Co Ltd | 浮子式油逆流防止器 |
DE3618301A1 (de) * | 1985-06-05 | 1986-12-18 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Vakuumpumpe |
ES2019910B3 (es) * | 1986-08-06 | 1991-07-16 | Barmag Barmer Maschf | Bomba de vacio por aletas |
DE4019854B4 (de) * | 1989-07-10 | 2004-09-16 | Saurer Gmbh & Co. Kg | Flügelzellen-Vakuumpumpe |
DE4002771A1 (de) * | 1990-01-31 | 1991-08-01 | Vdo Schindling | Unterdruckversorgungsanlage |
DE59209433D1 (de) * | 1991-05-29 | 1998-09-03 | Luk Automobiltech Gmbh & Co Kg | An einem Motorgehäuse eines Kraftfahrzeugmotors befestigte Flügelzellenvakuumpumpe |
-
2003
- 2003-11-12 EP EP07022290A patent/EP1890040B1/de not_active Expired - Lifetime
- 2003-11-12 AU AU2003287863A patent/AU2003287863A1/en not_active Abandoned
- 2003-11-12 EP EP03779691A patent/EP1563190A2/de not_active Withdrawn
- 2003-11-12 DE DE10393279T patent/DE10393279D2/de not_active Ceased
- 2003-11-12 WO PCT/DE2003/003747 patent/WO2004044431A2/de not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0749094A (ja) | 1993-08-05 | 1995-02-21 | Hitachi Ltd | ベーン式真空ポンプ |
JP2000205159A (ja) | 1999-01-11 | 2000-07-25 | Hitachi Ltd | ベ―ン式真空ポンプ |
Also Published As
Publication number | Publication date |
---|---|
EP1890040A2 (de) | 2008-02-20 |
DE10393279D2 (de) | 2005-06-02 |
EP1890040B1 (de) | 2012-06-27 |
EP1890040A3 (de) | 2008-02-27 |
WO2004044431A2 (de) | 2004-05-27 |
AU2003287863A8 (en) | 2004-06-03 |
AU2003287863A1 (en) | 2004-06-03 |
WO2004044431A3 (de) | 2004-09-16 |
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Legal Events
Date | Code | Title | Description |
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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 |
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17P | Request for examination filed |
Effective date: 20050613 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
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AX | Request for extension of the european patent |
Extension state: AL LT LV MK |
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DAX | Request for extension of the european patent (deleted) | ||
TPAC | Observations filed by third parties |
Free format text: ORIGINAL CODE: EPIDOSNTIPA |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: PABST, ULRICH Inventor name: PACE, ANTONIO Inventor name: MOJE, ANDREAS Inventor name: HILTEMANN, ULRICH Inventor name: OTTO, DIETER |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: IXETIC HUECKESWAGEN GMBH |
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17Q | First examination report despatched |
Effective date: 20070720 |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: PABST, ULRICH Inventor name: PACE, ANTONIO Inventor name: MOJE, ANDREAS Inventor name: HILTEMANN, ULRICH Inventor name: OTTO, DIETER |
|
R17C | First examination report despatched (corrected) |
Effective date: 20070718 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20071129 |