CA2575890A1 - Blade for a single-blade vacuum pump - Google Patents
Blade for a single-blade vacuum pump Download PDFInfo
- Publication number
- CA2575890A1 CA2575890A1 CA002575890A CA2575890A CA2575890A1 CA 2575890 A1 CA2575890 A1 CA 2575890A1 CA 002575890 A CA002575890 A CA 002575890A CA 2575890 A CA2575890 A CA 2575890A CA 2575890 A1 CA2575890 A1 CA 2575890A1
- Authority
- CA
- Canada
- Prior art keywords
- blade
- external wall
- rotor
- diagonal walls
- vacuum pump
- 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.)
- Abandoned
Links
- 238000005192 partition Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
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
- 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/08—Rotary pistons
- F01C21/0809—Construction of vanes or vane holders
-
- 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
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/22—Manufacture essentially without removing material by sintering
-
- 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
- F04C2240/00—Components
- F04C2240/20—Rotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to a blade (20) for a single-blade vacuum pump comprising a bowl-shaped housing (12) which is provided with a rotor (18) eccentrically and rotatably mounted therein, wherein the blade (20) is movably and orthogonally mounted with respect to a rotational axis (21), abuts on the inner circumferential surface of the housing by the free ends thereof (36) and is provided with a closed surface which extends in the direction of inner circumferential surface (34) and is formed by an external wall (32). Said invention is characterised in that the core of the blade (20) has a framework structure (38) enclosed by said external wall (32).
Description
Title: Blade for a Single-Blade Vacuum Pump Description The invention relates to a blade for a single-blade vacuum pump comprising a bowl-shaped housing, which is provided with a rotor eccentrically and rotatably mounted therein, wherein the blade is movable and orthogonally mounted with respect to a rotational axis and abuts on the inner circumferential surface of the housing by the free ends thereof.
Vacuum pumps with this structure are known. As a rule, they comprise a metal housing in which a rotor is rotatably mounted and in which the expansion chambers are formed. The rotor, for example, is put into motion by the engine of a motor vehicle. It also is known that this rotor is made of metal and in particular of sintered metal. Because of the high weight of the rotor, said rotor has a high mass moment of inertia, as a result of which the power consumption of the vacuum pump is undesirably high. Furthermore, the blade consists of solid material, which increases the mass moment of inertia even further.
It is the object of the present invention to provide a vacuum pump, especially a single-blade vacuum pump, which has a lower power consumption.
In view of the foregoing, the present invention solves the problem by means of a blade of a single-blade vacuum pump of the aforesaid type in that the blade in the direction of the peripheral surface comprises an enclosed surface and the surface is formed by an external wall, and that the core of the blade comprises a framework structure surrounded by the external wall.
As a result of the inventive embodiment of the blade, the major improvement achieved thereby is that the weight of the blade is reduced without having a major influence on the flexural strength.
The framework structure has the advantage of stiffening the blade by simple means, so that the bending forces created during the pumping operation can easily be absorbed and supported.
One embodiment provides that the framework structure extends to the tip of the blade. As a result, the mass moment of inertia of the blade is severely reduced, so that of minor forces are necessary for acceleration and delay.
An improvement provides that the framework structure comprises diagonal walls ending in the external wall. Further, the diagonal walls are positioned at an angle to the external wall, which is determined as a result of the respective case of application for the maximum type of burden. As an improvement, the diagonal walls are placed at an angle of 450 to the external wall. This configuration of the blade offers a major improvement in that optimally there may be a reaction against most of the bending forces. Because the blade is practically not deformed, it can run in the rotor with little backlash, as a result of which the efficiency of the pump is increased, because the air leakage is reduced. If need be, one could even completely dispense with a separate seal by means of sealing elements.
Vacuum pumps with this structure are known. As a rule, they comprise a metal housing in which a rotor is rotatably mounted and in which the expansion chambers are formed. The rotor, for example, is put into motion by the engine of a motor vehicle. It also is known that this rotor is made of metal and in particular of sintered metal. Because of the high weight of the rotor, said rotor has a high mass moment of inertia, as a result of which the power consumption of the vacuum pump is undesirably high. Furthermore, the blade consists of solid material, which increases the mass moment of inertia even further.
It is the object of the present invention to provide a vacuum pump, especially a single-blade vacuum pump, which has a lower power consumption.
In view of the foregoing, the present invention solves the problem by means of a blade of a single-blade vacuum pump of the aforesaid type in that the blade in the direction of the peripheral surface comprises an enclosed surface and the surface is formed by an external wall, and that the core of the blade comprises a framework structure surrounded by the external wall.
As a result of the inventive embodiment of the blade, the major improvement achieved thereby is that the weight of the blade is reduced without having a major influence on the flexural strength.
The framework structure has the advantage of stiffening the blade by simple means, so that the bending forces created during the pumping operation can easily be absorbed and supported.
One embodiment provides that the framework structure extends to the tip of the blade. As a result, the mass moment of inertia of the blade is severely reduced, so that of minor forces are necessary for acceleration and delay.
An improvement provides that the framework structure comprises diagonal walls ending in the external wall. Further, the diagonal walls are positioned at an angle to the external wall, which is determined as a result of the respective case of application for the maximum type of burden. As an improvement, the diagonal walls are placed at an angle of 450 to the external wall. This configuration of the blade offers a major improvement in that optimally there may be a reaction against most of the bending forces. Because the blade is practically not deformed, it can run in the rotor with little backlash, as a result of which the efficiency of the pump is increased, because the air leakage is reduced. If need be, one could even completely dispense with a separate seal by means of sealing elements.
A simple structure of the blade also is a consequence of a maximum of two diagonal walls meeting in the framework knot. In particular, with injection-molded blades one avoids an accumulation of material in the knot.
Preferably the blade, apart from the diagonal walls, is hollow. These cavities serve to accommodate lubricants in the form of oil, so that the oil is available permanently for sealing purposes.
In a special preferred embodiment, it is provided that the longitudinal axis of the blade comprises a partition which extends orthogonally towards the external wall. This partition increases the overall weight of the blade only insignificantly, as it has relatively small dimensions. However, it increases the flexural strength of the blade.
In order to achieve a pressure balance between the two sides of the partition, said partition is provided with openings. The openings can be relatively small and furthermore have the advantage that the lubricant can move from one side to the other side of the partition.
It also is an advantage if the partition, the external wall, and the diagonal walls form blind holes with an essentially triangular cross-section. Structures of this type are relatively stiff and yet easy to produce.
Other advantages, characteristics, and details of the invention are specified in the subordinate claims and in the following description in which, by referring to the drawing, a preferred embodiment is described in detail. Further, the characteristic elements represented in the drawing and mentioned in the description and in the claims can be fundamental to the invention individually or in any combination.
Preferably the blade, apart from the diagonal walls, is hollow. These cavities serve to accommodate lubricants in the form of oil, so that the oil is available permanently for sealing purposes.
In a special preferred embodiment, it is provided that the longitudinal axis of the blade comprises a partition which extends orthogonally towards the external wall. This partition increases the overall weight of the blade only insignificantly, as it has relatively small dimensions. However, it increases the flexural strength of the blade.
In order to achieve a pressure balance between the two sides of the partition, said partition is provided with openings. The openings can be relatively small and furthermore have the advantage that the lubricant can move from one side to the other side of the partition.
It also is an advantage if the partition, the external wall, and the diagonal walls form blind holes with an essentially triangular cross-section. Structures of this type are relatively stiff and yet easy to produce.
Other advantages, characteristics, and details of the invention are specified in the subordinate claims and in the following description in which, by referring to the drawing, a preferred embodiment is described in detail. Further, the characteristic elements represented in the drawing and mentioned in the description and in the claims can be fundamental to the invention individually or in any combination.
Of the drawing:
Figure 1 shows an exploded view of the vacuum pump;
Figure 2 shows a perspective view of the blade; and Figure 3 shows a perspective presentation of the blade, shown in part as a section.
Figure 1 shows the vacuum pump with the overall reference symbol 10 in which the housing 12 is represented without cover. The housing 12 has a suction connection 14, which ends in an interior 16. This interior 16 contains a rotor with the overall designation 18, in which a blade 20 is rotatably mounted orthogonally to the axis of rotation 21. The rotor 18 is structured in two parts and comprises a rotor axis 22 and a rotor housing 24. The rotor axis 22 passes through the housing 12, especially a base 26 of the interior 16 via a drive opening 28 and with a rectangular section 30 at the rear projects from the housing 12 via which said section (by means of a drive, which is not shown) is put into rotation. The drive opening 28 is provided with suitable sealants, so that neither lubricant is able to leak nor air and/or dirt able to enter the interior 16.
The blade 20, which is represented in detail in Figures 2 and 3, has an external wall 32 which faces the internal circumferential surface 34 of the interior 16. Further, the blade 20 with its free ends 36 abuts on this internal peripheral surface 34. The external wall 32 is closed, i.e., without openings leading to the opposite side and surrounds a framework structure 38, which forms the core of the blade 20. The framework structure 38 comprises a multitude of diagonal g walls 40, two of which meet in a framework knot 42. Further, the diagonal wall 40 and the external wall 32 form an angle 44 of 450.
Figure 2 clearly shows that the diagonal walls 40 are arranged in the shape of a W. The external wall 32 and two diagonal walls 40 surround an essentially triangular opening 46. This opening 46 can either be continuous or interrupted by a partition 48, as shown in Figure 3.
This partition 48 extends in the direction of the longitudinal axis 50 of the blade 20 and comprises openings 52, which interconnect both openings 46. The openings 46 can also be slightly conical, so that the blade can easily be removed from an injection mold.
Figure 1 shows an exploded view of the vacuum pump;
Figure 2 shows a perspective view of the blade; and Figure 3 shows a perspective presentation of the blade, shown in part as a section.
Figure 1 shows the vacuum pump with the overall reference symbol 10 in which the housing 12 is represented without cover. The housing 12 has a suction connection 14, which ends in an interior 16. This interior 16 contains a rotor with the overall designation 18, in which a blade 20 is rotatably mounted orthogonally to the axis of rotation 21. The rotor 18 is structured in two parts and comprises a rotor axis 22 and a rotor housing 24. The rotor axis 22 passes through the housing 12, especially a base 26 of the interior 16 via a drive opening 28 and with a rectangular section 30 at the rear projects from the housing 12 via which said section (by means of a drive, which is not shown) is put into rotation. The drive opening 28 is provided with suitable sealants, so that neither lubricant is able to leak nor air and/or dirt able to enter the interior 16.
The blade 20, which is represented in detail in Figures 2 and 3, has an external wall 32 which faces the internal circumferential surface 34 of the interior 16. Further, the blade 20 with its free ends 36 abuts on this internal peripheral surface 34. The external wall 32 is closed, i.e., without openings leading to the opposite side and surrounds a framework structure 38, which forms the core of the blade 20. The framework structure 38 comprises a multitude of diagonal g walls 40, two of which meet in a framework knot 42. Further, the diagonal wall 40 and the external wall 32 form an angle 44 of 450.
Figure 2 clearly shows that the diagonal walls 40 are arranged in the shape of a W. The external wall 32 and two diagonal walls 40 surround an essentially triangular opening 46. This opening 46 can either be continuous or interrupted by a partition 48, as shown in Figure 3.
This partition 48 extends in the direction of the longitudinal axis 50 of the blade 20 and comprises openings 52, which interconnect both openings 46. The openings 46 can also be slightly conical, so that the blade can easily be removed from an injection mold.
Claims (10)
1. A blade (20) for a single-blade vacuum pump (10) comprising a bowl-shaped housing (12) which is provided with a rotor (18) eccentrically and rotatably mounted in the housing (12), wherein the blade (20) is movably and orthogonally mounted in the rotor (18) with respect to a rotational axis (21), abuts on the inner circumferential surface (34) of the housing (12), in that the blade (20), at least in the sections projecting over the rotor (18) in the direction towards the internal peripheral surface (34), comprises a closed surface and said surface is formed by an external wall (32), characterized in that the core of the blade (20) comprises a framework structure (38), which is surrounded by the external wall (32), and the framework structure (38) extends in both opening ends (36) of the blade (20).
2. A blade as defined in claim 1, characterized in that the framework structure (38) comprises diagonal walls (40), which end in the external wall (32).
3. A blade as defined in claim 2, characterized in that the diagonal walls (40) are positioned at an angle (44) of 35° to 55°, especially 45° towards the external wall (32).
4. A blade as defined in one of the previous claims, characterized in that a maximum of two diagonal walls (40) meet in a framework knot (42).
5. A blade as defined in one of the previous claims, characterized in that the diagonal walls (40) are arranged in the shape of a W.
6. A blade as defined in one of the previous claims, characterized in that the blade (20), apart from the diagonal walls (40), is hollow.
7. A blade as defined in one of the claims 1 to 5, characterized in that in the longitudinal axis (50) of the blade (92) a partition (48) is provided, which extends orthogonally towards the external wall (32).
8. A blade as defined in claim 7, characterized in that the partition (48) is provided with openings (52).
9. A blade as defined in claim 7 or 8, characterized in that the partition (48), the external wall (32), and the diagonal walls (40) form blind holes in an essentially triangular cross-section.
10. A single-blade vacuum pump with a blade as defined in one of the previous claims.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004034925.8 | 2004-07-09 | ||
| DE102004034925A DE102004034925B3 (en) | 2004-07-09 | 2004-07-09 | A single-blade |
| PCT/EP2005/007028 WO2006005445A1 (en) | 2004-07-09 | 2005-06-30 | Blade for a single-blade vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2575890A1 true CA2575890A1 (en) | 2006-01-19 |
Family
ID=34967982
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002575775A Abandoned CA2575775A1 (en) | 2004-07-09 | 2005-04-20 | Single-blade vacuum pump |
| CA002575890A Abandoned CA2575890A1 (en) | 2004-07-09 | 2005-06-30 | Blade for a single-blade vacuum pump |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002575775A Abandoned CA2575775A1 (en) | 2004-07-09 | 2005-04-20 | Single-blade vacuum pump |
Country Status (6)
| Country | Link |
|---|---|
| EP (2) | EP1766240B1 (en) |
| KR (2) | KR101131741B1 (en) |
| CN (2) | CN100529405C (en) |
| CA (2) | CA2575775A1 (en) |
| DE (3) | DE102004034925B3 (en) |
| WO (2) | WO2006005380A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006016243A1 (en) | 2006-03-31 | 2007-10-04 | Joma-Hydromechanic Gmbh | Rotor pump`s e.g. vacuum pump, vane, has vane body comprising frame work structure with internal compartment walls transverse to longitudinal direction of vane, where internal compartment walls run in longitudinal axis |
| ITTO20060673A1 (en) * | 2006-09-21 | 2008-03-22 | Vhit Spa | PALETTE ROTARY PUMP |
| DE112008003014A5 (en) * | 2007-11-13 | 2010-09-16 | Ixetic Hückeswagen Gmbh | sintered rotor |
| WO2012010397A2 (en) * | 2010-07-03 | 2012-01-26 | Mahle International Gmbh | Rotary vane pump |
| DE112012002375A5 (en) * | 2011-06-07 | 2014-02-27 | Ixetic Bad Homburg Gmbh | Rotor for a vane pump |
| US8961148B2 (en) | 2011-07-19 | 2015-02-24 | Douglas G. Hunter | Unified variable displacement oil pump and vacuum pump |
| WO2015053064A1 (en) | 2013-10-07 | 2015-04-16 | 三桜工業株式会社 | Negative-pressure pump and cylinder head cover |
| KR101909783B1 (en) * | 2016-02-11 | 2018-10-18 | 김경수 | Rotary vane Pump or vacuum pump in motion of synchronous rotation with casing |
| US10982673B2 (en) | 2016-03-07 | 2021-04-20 | Pierburg Pump Technology Gmbh | Automotive vacuum pump |
| JP6826561B2 (en) | 2018-07-11 | 2021-02-03 | 大豊工業株式会社 | Vane pump |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4088426A (en) | 1976-05-17 | 1978-05-09 | The Rovac Corporation | Sliding vane type of compressor-expander having differential eccentricity feature |
| JPS5720852Y2 (en) * | 1978-05-22 | 1982-05-06 | ||
| IT1130363B (en) * | 1980-01-29 | 1986-06-11 | Leonardo Beltrame | CAPSULISM COMPRESSOR WITH IMPELLED IMPELLER, USEFUL IN PARTICULAR FOR INFLATION OR POWER SUPPLY OF PNEUMATIC WARNING DEVICES FOR VEHICLES |
| DE3131442A1 (en) * | 1981-08-07 | 1983-02-24 | Mitsubishi Electric Corp | Pump |
| DE8602905U1 (en) * | 1986-02-05 | 1986-03-27 | Strittmatter, Hans-Peter, 78112 St Georgen | Vane pump |
| DE3916869A1 (en) * | 1989-05-24 | 1990-11-29 | Korinek Anton Dipl Ing Fh | Rotary slide high speed air pump - has housing which encloses cylindrical inner chamber with smooth face surfaces and eccentrically mounted circular cylindrical rotor |
| DE4020082C2 (en) * | 1989-07-07 | 1998-09-03 | Barmag Barmer Maschf | Vane vacuum pump |
| DE4208194A1 (en) * | 1992-03-14 | 1993-09-16 | Leybold Ag | METHOD FOR OPERATING AN OIL-SEALED VACUUM PUMP AND A VACUUM PUMP SUITABLE FOR IMPLEMENTING THIS METHOD |
| DE19500542B4 (en) * | 1995-01-11 | 2004-02-12 | Pierburg Gmbh | Rotary pump |
| DE19703499C2 (en) * | 1997-01-31 | 2002-10-17 | Pierburg Ag | Rotary pump |
| IT1293672B1 (en) * | 1997-08-01 | 1999-03-08 | Magneti Marelli Spa | ROTARY VANE DEPRESSOR. |
| DE19981942B4 (en) * | 1998-09-30 | 2009-07-23 | Ixetic Hückeswagen Gmbh | vacuum pump |
| EP1055823B1 (en) * | 1998-12-14 | 2008-02-20 | Mitsubishi Denki Kabushiki Kaisha | Vane type vacuum pump for automobiles |
| DE10012406A1 (en) * | 2000-03-15 | 2001-09-20 | Joma Hydromechanic Gmbh | Rotary displacement pump has sealing bars at the blade with a spring to keep them pressed against the inner wall of the pump housing to maintain a seal at low start-up speeds |
| EP1327778A3 (en) * | 2000-03-15 | 2003-07-23 | Joma-Hydromechanic GmbH | Vane pump |
| DE10046697A1 (en) * | 2000-09-21 | 2002-04-11 | Bosch Gmbh Robert | Plastic blades for a vane vacuum pump |
| ATE367530T1 (en) * | 2001-10-15 | 2007-08-15 | Ixetic Hueckeswagen Gmbh | VACUUM PUMP |
-
2004
- 2004-07-09 DE DE102004034925A patent/DE102004034925B3/en not_active Expired - Lifetime
-
2005
- 2005-04-20 CN CNB2005800270353A patent/CN100529405C/en active Active
- 2005-04-20 WO PCT/EP2005/004209 patent/WO2006005380A1/en active IP Right Grant
- 2005-04-20 KR KR1020077003041A patent/KR101131741B1/en not_active IP Right Cessation
- 2005-04-20 CA CA002575775A patent/CA2575775A1/en not_active Abandoned
- 2005-04-20 DE DE502005002006T patent/DE502005002006D1/en active Active
- 2005-04-20 EP EP05742896A patent/EP1766240B1/en active Active
- 2005-06-30 CA CA002575890A patent/CA2575890A1/en not_active Abandoned
- 2005-06-30 DE DE502005002846T patent/DE502005002846D1/en active Active
- 2005-06-30 KR KR1020077003039A patent/KR101225346B1/en not_active IP Right Cessation
- 2005-06-30 CN CNA2005800271619A patent/CN101002024A/en active Pending
- 2005-06-30 EP EP05772163A patent/EP1766242B1/en active Active
- 2005-06-30 WO PCT/EP2005/007028 patent/WO2006005445A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006005445A1 (en) | 2006-01-19 |
| DE502005002006D1 (en) | 2007-12-27 |
| CA2575775A1 (en) | 2006-01-19 |
| CN101010514A (en) | 2007-08-01 |
| CN100529405C (en) | 2009-08-19 |
| WO2006005380A1 (en) | 2006-01-19 |
| KR101131741B1 (en) | 2012-04-05 |
| DE502005002846D1 (en) | 2008-03-27 |
| CN101002024A (en) | 2007-07-18 |
| EP1766242B1 (en) | 2008-02-13 |
| EP1766240B1 (en) | 2007-11-14 |
| DE102004034925B3 (en) | 2006-02-16 |
| KR20070034092A (en) | 2007-03-27 |
| EP1766240A1 (en) | 2007-03-28 |
| KR101225346B1 (en) | 2013-01-23 |
| KR20070042547A (en) | 2007-04-23 |
| EP1766242A1 (en) | 2007-03-28 |
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| EEER | Examination request | ||
| FZDE | Discontinued |
Effective date: 20130422 |