CN102472262A - Drive device for oscillating positive-displacement machines - Google Patents
Drive device for oscillating positive-displacement machines Download PDFInfo
- Publication number
- CN102472262A CN102472262A CN2010800274270A CN201080027427A CN102472262A CN 102472262 A CN102472262 A CN 102472262A CN 2010800274270 A CN2010800274270 A CN 2010800274270A CN 201080027427 A CN201080027427 A CN 201080027427A CN 102472262 A CN102472262 A CN 102472262A
- Authority
- CN
- China
- Prior art keywords
- driving mechanism
- eccentric shaft
- piston rod
- star
- pressing plate
- 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.)
- Pending
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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
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/06—Control
- F04B1/07—Control by varying the relative eccentricity between two members, e.g. a cam and a drive shaft
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- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
- F04B49/123—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element
- F04B49/125—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts
- F04B49/126—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members by changing the eccentricity of one element relative to another element by changing the eccentricity of the actuation means, e.g. cams or cranks, relative to the driving means, e.g. driving shafts with a double eccenter mechanism
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Transmission Devices (AREA)
Abstract
The present invention relates to a drive mechanism for oscillating positive-displacement machines, such as for example diaphragm pumps, having an eccentric shaft (2) and a multiplicity m of piston rods, wherein the piston rods are connected to the eccentric shaft in such a way that a rotation of the eccentric shaft generates an oscillating linear movement of the piston rods. In order to provide a corresponding drive mechanism which eliminates or at least reduces the described disadvantages, it is proposed according to the invention that the eccentric shaft and piston rods are connected to one another by means of a sliding-block guide.
Description
The present invention relates to a kind of driving mechanism that is used to make positive discharge capacity machinery
swing such as diaphragm type pump; It comprises eccentric shaft and Duo Gen piston rod; Wherein, Piston rod so is connected to eccentric shaft, i.e. the rotation of eccentric shaft produces the straight line motion of the swing of piston rod.
Usually the machine of structure swing work on the basis of the principle of direct-push type crank drive (Geradschubkurbelgetriebe).Under powerful situation or less for the wobble quality power that keeps acting on machinery base, this machine is the form of multicrank driving mechanism usually.At this, each eccentric part with connecting rod and piston rod comes to be arranged side by side each other with star-like mode in upright arrangement or opposed or radially and by common crankshaft drives, the eccentric part of crankshaft (Exzenter) the identical angle that relative to each other squints respectively.
The shortcoming of the sort of structure is basically:
-the crankshaft that is equipped with each other a plurality of and the eccentric part put stands higher bending moment and size must correspondingly design more solidly,
-it is special that bigger power appears in the bearing between crankshaft and the crank box in the structure (this is most situation) that becomes array, and this has raised the cost of bearing,
-only under the situation of six cylinder machines, just have a mass balance completely, and
-driving mechanism totally is bigger structural volume, bigger weight and relates to higher manufacture cost.
In order to overcome these shortcomings, developed the multi-cylinder machine, wherein piston rod all is positioned on the plane and the identical angle that relative to each other squints.Piston rod is driven by single eccentric part, thereby crankshaft can correspondingly be reduced size.The sort of aufbauprinciple provides two kinds of different designs:
A) have the structure that the power between eccentric part and the piston rod cooperates, for this structure, piston rod compresses the slidingsurface of eccentric part through return spring, and
B) have the structure of form fit between eccentric part and the piston rod,, replace return spring by the clip (R ü ckholspange) that returns that surrounds all piston rods for this structure.
Two kinds of design structures all have shortcoming.Therefore, when using return spring, the power of return spring is added to the power of bar and causes the additional load on the parts.A little less than if the size design of spring gets extremely, the piston of connection can keep inserting shape, thereby, do not carry out or not exclusively carry out suction stroke.
Surrounding the clip that returns all piston rods, alternative use is expensive component in large-scale machine especially, and also need be used for whole eccentric drive mechanism than the macrostructure volume.
DE 85 21 520 has described the multi-cylinder diaphragm type pump with a plurality of diaphragm type pump pressure heads, and each pump head all has can be by the diaphragm of hydraulic piston actuating.At this moment, realize the driving of pump by means of connecting rod-eccentric part device.Connecting rod is connected to piston or piston rod rotationally and also is connected to eccentric shaft, and thus, it is expensive to make driving mechanism.
US 5 368 451 has described a kind of corresponding intrument with three oil hydraulic cylinders, and wherein piston rod is pushed against the eccentric part surface by means of return spring.
DE 196 26 938A1 have also described a kind of star piston cylinder structure, and its axis is centered on by the cylinder of radial directed, and displaceable piston is set in these cylinders, and these pistons are connected with axle by means of eccentric part through connecting rod.
From said existing technology, the purpose of this invention is to provide a kind of corresponding driving mechanism, this driving mechanism is avoided or is reduced above-mentioned shortcoming at least.
According to the present invention, be connected to each other by means of sliding unit guide (Kulissenf ü hrung) through eccentric shaft and piston rod and realize this purpose.The sliding unit guide comprise have slit, the slide blocks of the sliding unit of platform ridge (Steg) or groove and corresponding structure, this slide blocks receives to compel guiding through sliding unit.
Use the sliding unit guide just can cancel connecting rod; So just reduced the cost of driving mechanism and can also for example make the diaphragm type pump that is equipped with this driving mechanism little; Because the piston that now in metering cylinder, guides can directly be connected to eccentric shaft, need not connecting rod.
In preferred embodiment, all piston rods are positioned on the plane, and wherein especially preferably piston rod is arranged to star configuration.Term star configuration according to the present invention means the circumferentially each other spaced at equal intervals of piston rod along eccentric shaft.In other words, project on the plane perpendicular to eccentric shaft, adjacent piston rod comprises identical angle.
Regulation sliding unit guide is following structure in another preferred embodiment; Be that eccentric shaft and piston rod are along first direction in space; Preferably also be connected to each other to edge and the vertically disposed second direction in space form fit of first direction in space, simultaneously can be along doing relative movement perpendicular to the third direction of the first and second direction in space settings.
For example, the form that sliding unit can T-shaped groove, and slide blocks can be the form of the slide blocks of suitable coupling.Have found that sliding unit is preferably disposed on the piston rod, and slide blocks preferably is fixed to eccentric shaft.
For example, eccentric shaft can (for example rotationally) be connected to sliding element, and this sliding element has sliding unit or slide blocks, and wherein sliding unit or slide blocks are positioned on the separating surface of the regular polygon with n angle.
At this, n is preferably the integral multiple of m.That best is n=m.
Find that also sliding unit is preferably processed by Hardened Steel.Slide blocks is preferably processed by bronze preferably by Cuprum alloy, so that slide blocks can be with alap fricting movement in sliding unit.
Many piston drive mechanisms according to the present invention have so been eliminated the shortcoming of setting forth in this specification beginning; The piston force that promptly is used for compression stroke and suction stroke directly is delivered to each root piston rod through eccentric sliding unit; This sliding unit is pivotally connected to eccentric shaft; Wherein cancelled back bar (R ü ckzugstange) or the optional feature the connecting rod, and the physical dimension of overall driving mechanism can reduce significantly thus such as costliness.
Other advantage, characteristic and possible purposes will clearly display from the following explanation of preferred embodiment and relevant accompanying drawing, in the accompanying drawing:
Fig. 1 illustrates the sectional view according to first embodiment of eccentric sliding unit guiding mechanism of the present invention,
Fig. 2 illustrates perpendicular to another sectional view of scheming among Fig. 1,
Fig. 3 a-c illustrates three kinds of modification according to driving mechanism of the present invention, and
Fig. 4 a+b and 5a+b illustrate the various embodiments that connect between piston rod and the sliding element.
In embodiment shown in Fig. 1 and 2, driving mechanism is used to drive three cylinder machines.Therefore, driving mechanism has three piston rods 1, and these piston rods are positioned on the plane and the 120 ° of settings of relative to each other squinting.Eccentric shaft 2 is connected to eccentric sliding unit rotationally.When eccentric shaft rotates around axis 12, the central point 11 of eccentric sliding unit will move on the circle by mark 13 expressions.In other words, eccentric sliding unit is carried out the circular movement of translation.Sliding element 6 preferably is a triangle, and wherein slip or groove piece are arranged on the three sides of a triangle, and these three limits all have slidingsurface 8.
Piston rod 1 has the corresponding slide (Gleitschuhe) 5 as sliding unit.As visible from Fig. 1 especially, slide 5 surrounds each slide blocks of sliding element 6, thereby the slidingsurface 8 of slide blocks is against the slidingsurface 7 of sliding unit.Therefore, the slide blocks of sliding element 6 is surrounded by slide 5 with the mode of form fit.When axle 2 rotated, slide 5 will slide along the slidingsurface 8 of slide blocks.This structure makes does not almost have transverse force to be applied to piston rod 1 through eccentric shaft.
Can be clear that the very-close-coupled mechanism of driving mechanism.
Fig. 3 a illustrates three different embodiments of the present invention to 3c.Fig. 3 a illustrates two cylinder drive units.Therefore, driving mechanism only has two piston rods 1.Sliding element 6 ' is rectangular at this, wherein only is provided with corresponding slide blocks at two relative edges place of rectangle, and these slide blockss are provided with slidingsurface and are surrounded by the slide 5 of piston rod 1.When axle rotates, the central point 11 of sliding element 6 ' will move along circle 13.
Fig. 3 b illustrate by known among Fig. 1 and 2, have an embodiment of three cylinders.
Fig. 3 c illustrates four cylinder drive units.Sliding element 6 " be similar to the embodiment's of Fig. 3 a sliding element 6 '; but in the case; at square sliding element 6 " all four edges places the slide blocks of the correspondence that carries slidingsurface 11 is set, these slide blockss are surrounded by the slide 5 of a piston rod in four piston rods 1 respectively.
Figure 4 and 5 illustrate the specific embodiments of slide.
Fig. 4 a and 4b illustrate the view of the magnification ratio of sliding unit guide.Piston rod 1 has pressing plate 5 ' at its place, end, and these pressing plates form slide with spacing claw (R ü ckholklauen) 14.Spacing claw 14 arrives pressing plate 5 ' by means of screw.In the embodiment shown in Fig. 4 a, spacing claw 14 is screwed on the pressing plate 5 ' with screw in the end.
In the embodiment shown in Fig. 4 b, spacing claw 14 structure that takes the shape of the letter U, thereby its surrounds slide blocks and pressing plate 5 '.Purpose from fixing subsequently with claw 14 from behind, just is screwed on the pressing plate 5 ' with screw from its that side away from slide blocks.
Fig. 5 a and 5b illustrate the embodiment at edge that spacing claw 14 usefulness screws are screwed onto the extending circumferentially of pressing plate 5 '.Among the embodiment in Fig. 5 b, two spacing claws 5 ' connect together with the suitable threaded piece (Passschraube) 15 that connects by means of bolt.
Label list
1 piston rod
2 eccentric shafts
5 slides
5 ' slide pressing plate
6,6 ', 6 " sliding element
The slidingsurface of 7 sliding units
The slidingsurface of 8 slide blockss
10 circles
The central point of 11 sliding elements
The axis of 12 eccentric shafts
13 circles
14 spacing claws
15 bolts/connect threaded piece
Claims (11)
1. one kind is used to make the mechanical driving mechanism of swinging of positive discharge capacity such as diaphragm type pump; Said driving mechanism comprises eccentric shaft (2) and many piston rods of m; Wherein, said piston rod so is connected to said eccentric shaft, i.e. the rotation of said eccentric shaft produces the straight line motion of the swing of said piston rod; It is characterized in that said eccentric shaft and said piston rod link together by means of the sliding unit guide.
2. driving mechanism as claimed in claim 1 is characterized in that, all piston rods all are arranged on the plane.
3. according to claim 1 or claim 2 driving mechanism is characterized in that said piston rod is arranged to star configuration.
4. like each described driving mechanism in the claim 1 to 3; It is characterized in that; Said eccentric shaft and said piston rod are along first direction in space; Preferably also connect together to edge and the vertically disposed second direction in space form fit of said first direction in space, simultaneously can be along doing relative movement perpendicular to the third direction of said first direction in space and the said second direction in space setting.
5. like each described driving mechanism in the claim 1 to 4, it is characterized in that, the form of the T-shaped groove of said sliding unit guide/groove piece link, piston rod preferably has the T connected in star, and said groove piece is fixed to said eccentric shaft.
6. driving mechanism as claimed in claim 5 is characterized in that said eccentric shaft has sliding element, and said sliding element has said T connected in star or said groove piece, and T connected in star or groove piece are positioned on each bar limit of the regular polygon with n angle.
7. driving mechanism as claimed in claim 5 is characterized in that, n is the integral multiple of m, and n preferably equals m.
8. like each described driving mechanism in the claim 1 to 7, it is characterized in that said T connected in star is processed by Hardened Steel.
9. like each described driving mechanism in the claim 1 to 8, it is characterized in that said groove piece is preferably bronze and is processed by Cuprum alloy.
10. like each described driving mechanism in the claim 5 to 9, it is characterized in that said T connected in star is made up of pressing plate and the spacing claw that is fixed to said pressing plate.
11. driving mechanism as claimed in claim 10 is characterized in that, said spacing claw is by means of bolt or connect the said pressing plate that threaded piece is connected to said piston rod, and said spacing claw is preferably and is pivotally connected to said pressing plate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009037123.0 | 2009-08-11 | ||
| DE102009037123 | 2009-08-11 | ||
| PCT/EP2010/061303 WO2011018393A1 (en) | 2009-08-11 | 2010-08-03 | Drive device for oscillating positive-displacement machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102472262A true CN102472262A (en) | 2012-05-23 |
Family
ID=43242194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800274270A Pending CN102472262A (en) | 2009-08-11 | 2010-08-03 | Drive device for oscillating positive-displacement machines |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20120097025A1 (en) |
| EP (1) | EP2464867B1 (en) |
| JP (1) | JP2013501881A (en) |
| CN (1) | CN102472262A (en) |
| BR (1) | BR112012003106A8 (en) |
| CA (1) | CA2762274A1 (en) |
| ES (1) | ES2523271T3 (en) |
| MY (1) | MY160348A (en) |
| RU (1) | RU2012104760A (en) |
| WO (1) | WO2011018393A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105378279A (en) * | 2013-06-13 | 2016-03-02 | 麦格纳动力系巴德霍姆堡有限责任公司 | Radial piston compressor |
| CN105715473A (en) * | 2016-04-01 | 2016-06-29 | 郑州科技学院 | Multi-cylinder high-pressure radial plunger pump |
| CN107339218A (en) * | 2017-07-17 | 2017-11-10 | 李静茹 | A kind of high efficiency air compressor |
| CN110630461A (en) * | 2019-09-24 | 2019-12-31 | 邵玉强 | Variable radial plunger pump |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691636B (en) * | 2012-06-09 | 2015-02-25 | 林志元 | Water continuous pressurizing device |
| GB2540548A (en) * | 2015-07-20 | 2017-01-25 | Delphi Int Operations Luxembourg Sarl | Novel pump design |
| CN108050041A (en) * | 2018-01-25 | 2018-05-18 | 刘硕毅 | Coplanar multi-cylinder Direct Action Type gas compression mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH83943A (en) * | 1919-05-17 | 1920-02-02 | Brandenberg Hanselmann Robert | Pump drive |
| CN86200564U (en) * | 1986-02-26 | 1987-02-11 | 上海试验机厂 | Radial radiation seven-piston-pump used in universal testing machine |
| DE8521520U1 (en) * | 1985-07-25 | 1987-04-16 | Lewa Herbert Ott Gmbh + Co, 7250 Leonberg, De | |
| DE3900888A1 (en) * | 1989-01-13 | 1990-07-26 | Rexroth Mannesmann Gmbh | Radial piston machine |
| DE19626938A1 (en) * | 1996-07-04 | 1998-01-08 | Wanzke Lothar | Star-shaped piston cylinder assembly e.g. radial piston pump |
| US20060097084A1 (en) * | 2002-10-17 | 2006-05-11 | Oswald Gromer | Mouth rinse and spray nozzle for creating a liquid jet and teeth-cleaning system |
| CN101131152A (en) * | 2007-10-16 | 2008-02-27 | 天津市泽华源泵业科技发展有限公司 | Constant-pressure variable radial-plunger pump |
| CN101315074A (en) * | 2008-06-21 | 2008-12-03 | 张桂云 | Reciprocating apparatus of plunger pump |
| CN101457747A (en) * | 2008-12-18 | 2009-06-17 | 浙江工业大学 | Vertical single eccentric shaft radial equipartition multi-connection reciprocating pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CH504620A (en) * | 1970-03-02 | 1971-03-15 | Wisag Wissenschaftliche Appara | Piston pump, the stroke of which is variably adjustable |
| US3682044A (en) * | 1970-03-31 | 1972-08-08 | Delavan Mfg Co Inc | Balanced hydraulic device |
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| US5368451A (en) | 1991-06-04 | 1994-11-29 | Hammond; John M. | Metering pump |
| US6024542A (en) * | 1994-02-14 | 2000-02-15 | Phillips Engineering Co. | Piston pump and method of reducing vapor lock |
| DE19816044C2 (en) * | 1998-04-09 | 2002-02-28 | Bosch Gmbh Robert | Radial piston pump for high-pressure fuel generation |
| DE10139519A1 (en) * | 2001-08-10 | 2003-02-27 | Bosch Gmbh Robert | Radial piston pump for high-pressure fuel generation, and method for operating an internal combustion engine, computer program and control and / or regulating device |
| DE10248338A1 (en) * | 2002-10-17 | 2004-05-06 | Braun Gmbh | Spray can, to deliver a liquid jet spray as a mouth wash and clean the teeth, has an eddy chamber at the jet body to develop a cone spray of micro droplets to rinse the mouth and remove plaque |
-
2010
- 2010-08-03 MY MYPI2012000571A patent/MY160348A/en unknown
- 2010-08-03 EP EP10740619.1A patent/EP2464867B1/en active Active
- 2010-08-03 JP JP2012524199A patent/JP2013501881A/en active Pending
- 2010-08-03 CN CN2010800274270A patent/CN102472262A/en active Pending
- 2010-08-03 ES ES10740619.1T patent/ES2523271T3/en active Active
- 2010-08-03 RU RU2012104760/06A patent/RU2012104760A/en unknown
- 2010-08-03 CA CA2762274A patent/CA2762274A1/en not_active Abandoned
- 2010-08-03 WO PCT/EP2010/061303 patent/WO2011018393A1/en active Application Filing
- 2010-08-03 BR BR112012003106A patent/BR112012003106A8/en not_active IP Right Cessation
- 2010-08-03 US US13/379,551 patent/US20120097025A1/en not_active Abandoned
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH83943A (en) * | 1919-05-17 | 1920-02-02 | Brandenberg Hanselmann Robert | Pump drive |
| DE8521520U1 (en) * | 1985-07-25 | 1987-04-16 | Lewa Herbert Ott Gmbh + Co, 7250 Leonberg, De | |
| CN86200564U (en) * | 1986-02-26 | 1987-02-11 | 上海试验机厂 | Radial radiation seven-piston-pump used in universal testing machine |
| DE3900888A1 (en) * | 1989-01-13 | 1990-07-26 | Rexroth Mannesmann Gmbh | Radial piston machine |
| DE19626938A1 (en) * | 1996-07-04 | 1998-01-08 | Wanzke Lothar | Star-shaped piston cylinder assembly e.g. radial piston pump |
| US20060097084A1 (en) * | 2002-10-17 | 2006-05-11 | Oswald Gromer | Mouth rinse and spray nozzle for creating a liquid jet and teeth-cleaning system |
| CN101131152A (en) * | 2007-10-16 | 2008-02-27 | 天津市泽华源泵业科技发展有限公司 | Constant-pressure variable radial-plunger pump |
| CN101315074A (en) * | 2008-06-21 | 2008-12-03 | 张桂云 | Reciprocating apparatus of plunger pump |
| CN101457747A (en) * | 2008-12-18 | 2009-06-17 | 浙江工业大学 | Vertical single eccentric shaft radial equipartition multi-connection reciprocating pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105378279A (en) * | 2013-06-13 | 2016-03-02 | 麦格纳动力系巴德霍姆堡有限责任公司 | Radial piston compressor |
| CN105715473A (en) * | 2016-04-01 | 2016-06-29 | 郑州科技学院 | Multi-cylinder high-pressure radial plunger pump |
| CN107339218A (en) * | 2017-07-17 | 2017-11-10 | 李静茹 | A kind of high efficiency air compressor |
| CN110630461A (en) * | 2019-09-24 | 2019-12-31 | 邵玉强 | Variable radial plunger pump |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2464867A1 (en) | 2012-06-20 |
| EP2464867B1 (en) | 2014-09-03 |
| BR112012003106A2 (en) | 2016-02-23 |
| WO2011018393A1 (en) | 2011-02-17 |
| BR112012003106A8 (en) | 2017-12-05 |
| CA2762274A1 (en) | 2011-02-17 |
| ES2523271T3 (en) | 2014-11-24 |
| US20120097025A1 (en) | 2012-04-26 |
| RU2012104760A (en) | 2013-09-20 |
| MY160348A (en) | 2017-02-28 |
| JP2013501881A (en) | 2013-01-17 |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20120523 |