US20170276123A1 - Displacing device - Google Patents
Displacing device Download PDFInfo
- Publication number
- US20170276123A1 US20170276123A1 US15/509,379 US201415509379A US2017276123A1 US 20170276123 A1 US20170276123 A1 US 20170276123A1 US 201415509379 A US201415509379 A US 201415509379A US 2017276123 A1 US2017276123 A1 US 2017276123A1
- Authority
- US
- United States
- Prior art keywords
- displacement
- group
- crank
- crank shaft
- bodies
- 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
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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
- 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
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
- F04B1/0536—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units
- F04B1/0538—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units located side-by-side
-
- 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
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/006—Crankshafts
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
Definitions
- the invention relates to a displacement device for fluids, in particular liquids, comprising displacement bodies which dip linearly into the displacement device, namely into cylindrical pump chambers in a pump housing which are each in fluidic communication via a suction valve and a pressure valve, wherein the displacement bodies are each connected via a connecting rod to crank pins of an externally driven crank shaft.
- Displacement pumps are known by means of which water can be brought to pressures of several hundred bar. Such pressurized water is used, for example, to descale rolled steel blocks or strips in order to achieve rolled products with high, uniform surface quality.
- the invention is based on the object of providing a displacement device of the type described initially which leads to few pressure pulsations.
- a particularly compact design can be achieved here if two groups of displacement bodies are provided and the displacement bodies of one group are arranged alternately with the displacement bodies of the other group in the axial direction of the crank shaft.
- the two groups of displacement bodies are arranged in a boxer arrangement, wherein the group offset angle is 180° but can also be modified, e.g. can be 150°.
- the stressing of the crank shaft is minimized compared to a series arrangement with an odd number of displacement bodies.
- each group comprises three displacement bodies each arranged at the angular distance ⁇ of 120° distributed around the crank shaft.
- An offset angle ⁇ of 30° of the crank pins assigned to the first group with respect to those of the second group results in a particularly low pressure pulsation here.
- the formulated object can also be solved by a displacement device of the type described initially in which
- FIGS. 1 a and 1 b shows the side view and front view of a crank shaft with two groups of three displacement bodies each attached thereto in boxer arrangement with a group offset angle ⁇ of 180° in a displacement pump according to the invention
- FIG. 2 shows the front view of a modified displacement pump according to FIG. 1 a , here however with a group offset angle ⁇ of 150°;
- FIG. 3 shows the crank shaft according to FIG. 1 or 2 without displacement bodies in side view
- FIGS. 4 and 5 shows two schematic views of the crank pin arrangements of the crank shaft according to FIG. 2 and specifically
- FIG. 4 shows the crank pin arrangement of a first group of three displacement bodies
- FIG. 5 shows the crank pin arrangement of the second group of three displacement bodies turned through an offset angle ⁇ with respect to this
- FIGS. 6 a, b and c show examples for the crank pin positions of a displacement pump according to FIGS. 1 a , 1 b and 2 in three different rotational positions of the crank shaft;
- FIG. 7 shows three diagrams arranged one above the other for an arrangement according to FIGS. 1 a and a b in each case as a function of a crank angle between 0 and 360°, namely in the upper diagram six speed curves for the speed of the fixed displacement bodies, in the middle diagram the conveying volume and in the lowest diagram the pressure pulsations;
- FIG. 8 shows a perspective view of parts of another displacement device according to the invention with a common drive for two displacement pumps
- FIG. 9 shows a partial view of the displacement device according to FIG. 8 .
- FIGS. 1 a and 1 b show in a side view and a front view of a crank shaft 10 with two opposite groups A, B of displacement bodies or plungers 1 , 3 , 5 (group A) and 2 , 4 , 6 (group B) mounted thereon.
- the plungers of group A are arranged alternately to those of group B in the axial direction of the crank shaft as can be seen from FIG. 1 a .
- the groups A and B are arranged offset with respect to one another by a group offset angle ⁇ of 180° in boxer arrangement.
- the angle ⁇ according to FIGS. 1 a and 1 b is 180°, but can differ from this.
- crank shaft 10 and the plungers 1 to 6 form part of a displacement pump whose housing and further parts are not shown; it is understood however that the plungers 1 to 6 are guided in a slidable and sealed manner in cylindrical pump chambers of the usual design, wherein the pump chambers are in fluidic communication via respectively one suction valve and one pressure valve in order to bring a fluid, e.g. water to high pressures.
- a fluid e.g. water to high pressures.
- crank pins 11 to 16 here relate to the assignment to the appurtenant crank pins 11 to 16 , i.e., 1 to 11 , 2 to 12 etc.
- the plungers 1 to 6 are connected to these crank pins via connecting rods 20 in the usual manner by means of crossheads 21 .
- FIGS. 6 a, b and c show the crank shaft according to FIGS. 1 to 5 in the three rotational positions 0°, 60° and 90°.
- the crank pins 11 to 16 are symbolized by circles which are shown smaller here than in FIGS. 4 and 5 for simpler representation.
- all six crank pins are shown here in each case in the three FIGS. 6 a , 6 b and 6 c in order to make the tracking of the crank pins by the offset angle ⁇ clear.
- a reference number 1 to 6 designating one of the respective plungers is indicated in each circle. Plungers with odd reference numbers 1 , 3 or 5 belong to group A and convey upwards in FIGS.
- plungers with even reference numbers 2 , 4 or 6 belong to group B and convey downwards.
- the square plunger symbol in the respective circle above or below the plunger reference number represents the direction of action of the relevant plunger.
- Pressurized conveying plungers are identified by hatched lines. Plungers without hatched lines are located in the suction stroke and are pressure-free.
- Plungers at the upper dead point OT or lower dead point UT have the speed zero, and therefore intersect the crank angle axis x.
- the conveying process begins or ends.
- the plunger 1 is located at crank angle zero in UT and begins to convey with increasing conveying quantity.
- the plunger 2 is already located in the conveying state with increasing conveying quantity at crank angle zero.
- the plunger 3 is located in the upper dead point OT and the speed curve g 3 intersects the crank angle axis in a descending manner whilst plunger 2 reaches the maximum speed and conveys at maximum capacity.
- plunger 1 conveys at the highest speed at maximum capacity whilst plunger 6 has reached the speed 0 m/s in OT etc.
- Curve f in the middle diagram of FIG. 7 shows the periodic fluctuation of the conveyed fluid amount in l/min between approximately 1550 l/min and 1610 l/min achieved with a displacement pump according to FIGS. 1 to 5 .
- curve d in the lowest diagram in FIG. 7 shows the pressure pulsation of the conveyed liquid which fluctuates between 375 bar minimum pressure and 400 bar maximum pressure.
- FIGS. 8 and 9 show an alternative displacement device wherein FIG. 9 shows the right half of the device according to FIG. 8 in a side view according to FIG. 1 a .
- FIGS. 8 and 9 the same reference numbers as in FIGS. 1 to 6 are used for the same parts or those having the same effect.
- the displacement device possesses an electric motor 30 as drive whose continuous output shaft (not visible) is coupled with its output shaft ends 34 each to a crank shaft 10 of its own displacement pump 31 , 32 .
- a unit is formed comprising a central drive 30 and two displacement pumps 31 , 32 aligned with this, which are mounted in a flying manner on the motor 30 .
- Each displacement pump has a plunger group A with three plungers arranged in series, namely group A with plungers 1 , 3 , 5 (left in FIG. 8 ) and group B with plungers 2 , 4 , 6 (right of electric motor 30 in FIGS. 8 and 9 ).
- All the plungers 1 , 3 , 5 and 2 , 4 , 6 are each arranged in series and in the same vertical plane E.
- the crank pins 11 , 13 , 15 of the crank shaft 10 of group A are arranged according to FIG. 4 in the same plane E as the plungers 1 , 3 , 5 .
- the offset angle ⁇ can also be smaller than or greater than 30°.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
- The invention relates to a displacement device for fluids, in particular liquids, comprising displacement bodies which dip linearly into the displacement device, namely into cylindrical pump chambers in a pump housing which are each in fluidic communication via a suction valve and a pressure valve, wherein the displacement bodies are each connected via a connecting rod to crank pins of an externally driven crank shaft.
- Displacement pumps are known by means of which water can be brought to pressures of several hundred bar. Such pressurized water is used, for example, to descale rolled steel blocks or strips in order to achieve rolled products with high, uniform surface quality.
- When using displacement pumps with linearly movable displacement bodies, hereinafter also called plungers, pressure pulsations unavoidably occur which should be kept as small as possible in order to ensured desired uniformity of the descaling of the rolled products. In conventional displacement pumps the cylinders for the displacement bodies are arranged in series in the pump housing. Studies made by the applicant have shown that in such a series arrangement the pressure pulsations become smaller with increasing odd number of cylinders than with an even number of cylinders. However, obstacles to the use of a large odd number of cylinders, e.g. seven cylinders, are the large installation length, the poor mass balance and the non-uniform loading of the crank shaft.
- The invention is based on the object of providing a displacement device of the type described initially which leads to few pressure pulsations.
- This object is solved by
patent claim 1, wherein for a displacement device according to the invention -
- at least two groups of displacement bodies are provided,
- all the groups each have an equal number of displacement bodies,
- the crank pins for the displacement bodies are arranged distributed around the crank shaft at the same angular distances α,
- the crank pins assigned to one group are arranged around the crank shaft with respect to those of the other groups in each case offset by an offset angle β,
- the displacement bodies of each group are arranged in the axial direction of the crank shaft offset with respect to those of the other groups and
- the groups of displacement bodies are each arranged offset to one another by a group offset angle γ around the crank shaft.
- A particularly compact design can be achieved here if two groups of displacement bodies are provided and the displacement bodies of one group are arranged alternately with the displacement bodies of the other group in the axial direction of the crank shaft.
- With this arrangement it is possible to provide the displacement bodies in a V or boxer arrangement.
- With regard to better compensation of the mass forces, it is advantageous if the two groups of displacement bodies are arranged in a boxer arrangement, wherein the group offset angle is 180° but can also be modified, e.g. can be 150°. In a boxer arrangement the stressing of the crank shaft is minimized compared to a series arrangement with an odd number of displacement bodies.
- In a displacement device designed with two groups of displacement bodies according to the invention, each group comprises three displacement bodies each arranged at the angular distance α of 120° distributed around the crank shaft. An offset angle β of 30° of the crank pins assigned to the first group with respect to those of the second group results in a particularly low pressure pulsation here.
- The formulated object can also be solved by a displacement device of the type described initially in which
-
- a drive is provided with two opposite output shaft ends to which respectively one crank shaft of a displacement pump is coupled, which in each case comprises a group of displacement bodies,
- the two groups of displacement bodies have an equal number of displacement bodies,
- the crank pins for the displacement bodies of each group are arranged offset with respect to one another around the appurtenant crank shaft at the same angular distances α and
- the crank pins of one group are arranged offset with respect to those of the other group by an offset angle β around the appurtenant crank shaft.
- Further advantageous embodiments of the invention with a common drive for two displacement pumps are specified in subclaims 7 to 12.
- The invention is explained in detail hereinafter with reference to schematic drawings with further details. In the figures:
-
FIGS. 1a and 1b shows the side view and front view of a crank shaft with two groups of three displacement bodies each attached thereto in boxer arrangement with a group offset angle γ of 180° in a displacement pump according to the invention; -
FIG. 2 shows the front view of a modified displacement pump according toFIG. 1a , here however with a group offset angle γ of 150°; -
FIG. 3 shows the crank shaft according toFIG. 1 or 2 without displacement bodies in side view; -
FIGS. 4 and 5 shows two schematic views of the crank pin arrangements of the crank shaft according toFIG. 2 and specifically -
FIG. 4 shows the crank pin arrangement of a first group of three displacement bodies and -
FIG. 5 shows the crank pin arrangement of the second group of three displacement bodies turned through an offset angle β with respect to this; -
FIGS. 6a, b and c show examples for the crank pin positions of a displacement pump according toFIGS. 1a, 1b and 2 in three different rotational positions of the crank shaft; -
FIG. 7 shows three diagrams arranged one above the other for an arrangement according toFIGS. 1a and ab in each case as a function of a crank angle between 0 and 360°, namely in the upper diagram six speed curves for the speed of the fixed displacement bodies, in the middle diagram the conveying volume and in the lowest diagram the pressure pulsations; -
FIG. 8 shows a perspective view of parts of another displacement device according to the invention with a common drive for two displacement pumps; -
FIG. 9 shows a partial view of the displacement device according toFIG. 8 . -
FIGS. 1a and 1b show in a side view and a front view of acrank shaft 10 with two opposite groups A, B of displacement bodies orplungers FIG. 1a . The groups A and B are arranged offset with respect to one another by a group offset angle γ of 180° in boxer arrangement. The angle γ according toFIGS. 1a and 1b is 180°, but can differ from this. - The
crank shaft 10 and theplungers 1 to 6 form part of a displacement pump whose housing and further parts are not shown; it is understood however that theplungers 1 to 6 are guided in a slidable and sealed manner in cylindrical pump chambers of the usual design, wherein the pump chambers are in fluidic communication via respectively one suction valve and one pressure valve in order to bring a fluid, e.g. water to high pressures. -
FIG. 3 shows thecrank shaft 10 alone. At its right end inFIG. 3 it is provided with adrive spigot 17 by means of which it can be coupled to an output shaft of a drive (not shown) such as an electric motor. Furthermore it has two bearingbosses crank pins 11 to 16 are arranged adjacent to one another in the axial direction. The three crank pins in each case of the two groups are each arranged distributed at an angular distance α=120°. Thereference numbers 1 to 6 for the plungers not shown inFIG. 3 here relate to the assignment to theappurtenant crank pins 11 to 16, i.e., 1 to 11, 2 to 12 etc. Theplungers 1 to 6 are connected to these crank pins via connectingrods 20 in the usual manner by means ofcrossheads 21. The threecrank pins FIG. 5 arranged on the crank shaft offset with respect to thecrank pins plungers FIGS. 6a, 6b and 6c as well as toFIG. 7 . -
FIGS. 6a, b and c show the crank shaft according toFIGS. 1 to 5 in the threerotational positions 0°, 60° and 90°. Similarly to the diagram inFIGS. 4 and 5 , the crank pins 11 to 16 are symbolized by circles which are shown smaller here than inFIGS. 4 and 5 for simpler representation. Other than in these figures however, all six crank pins are shown here in each case in the threeFIGS. 6a, 6b and 6c in order to make the tracking of the crank pins by the offset angle β clear. Areference number 1 to 6 designating one of the respective plungers is indicated in each circle. Plungers withodd reference numbers FIGS. 1a, 1b and 2 whereas plungers with evenreference numbers - In the uppermost diagram in
FIG. 7 , the speed curves g1 to g6 of theindividual plungers 1 to 6 are shown as a function of the crank angle of the crank shaft from 0 to 360°, wherein the reference to the respective plunger is characterized by its reference number. Thus curve g1 pertains toplunger 1, curve g2 toplunger 2 etc. - Plungers at the upper dead point OT or lower dead point UT have the speed zero, and therefore intersect the crank angle axis x. Here the conveying process begins or ends. For example, the
plunger 1 is located at crank angle zero in UT and begins to convey with increasing conveying quantity. Theplunger 2 is already located in the conveying state with increasing conveying quantity at crank angle zero. - At crank angle 60° according to
FIG. 6b , theplunger 3 is located in the upper dead point OT and the speed curve g3 intersects the crank angle axis in a descending manner whilstplunger 2 reaches the maximum speed and conveys at maximum capacity. - At 90°
plunger 1 conveys at the highest speed at maximum capacity whilstplunger 6 has reached the speed 0 m/s in OT etc. - Curve f in the middle diagram of
FIG. 7 shows the periodic fluctuation of the conveyed fluid amount in l/min between approximately 1550 l/min and 1610 l/min achieved with a displacement pump according toFIGS. 1 to 5 . - Finally curve d in the lowest diagram in
FIG. 7 shows the pressure pulsation of the conveyed liquid which fluctuates between 375 bar minimum pressure and 400 bar maximum pressure. - This constitutes a very low pressure pulsation which is small than that which can be achieved with a conventional displacement pump with seven pumps in series.
-
FIGS. 8 and 9 show an alternative displacement device whereinFIG. 9 shows the right half of the device according toFIG. 8 in a side view according toFIG. 1a . InFIGS. 8 and 9 the same reference numbers as inFIGS. 1 to 6 are used for the same parts or those having the same effect. - As
FIG. 8 shows, the displacement device possesses anelectric motor 30 as drive whose continuous output shaft (not visible) is coupled with its output shaft ends 34 each to a crankshaft 10 of itsown displacement pump central drive 30 and twodisplacement pumps motor 30. Each displacement pump has a plunger group A with three plungers arranged in series, namely group A withplungers FIG. 8 ) and group B withplungers electric motor 30 inFIGS. 8 and 9 ). All theplungers crank shaft 10 of group A are arranged according toFIG. 4 in the same plane E as theplungers crank shaft 10 of group B as inFIG. 5 are arranged offset by an offset angle β=30° on thesecond crank shaft 10. As a result of this offset, a lower pressure pulsation can be achieved with a displacement device according toFIGS. 8 and 9 than with a conventional displacement pump with an odd number of plungers. - The invention is not restricted to the embodiments shown. Thus, each plunger group of one embodiment according to
FIGS. 1 to 9 can also have more than three plungers for each group. It is also possible to have more than three crank pin arrangements distributed uniformly around a common crank shaft, e.g. four crank pins, which are distributed around the circumference of the crank shaft by an angular spacing α=90°. The offset angle β can also be smaller than or greater than 30°. - The features disclosed in the preceding description, the claims and the drawings can be important, both individually and in any combination, for the implementation of the invention in its various configurations.
-
- A, B Plunger group
- 1 to 6 Displacement body, plunger
- 10 Crank shaft
- 11 to 16 Crank pin
- 17 Drive end
- 18, 19 Bearing boss
- 20 Connecting rod
- 21 Cross head
- α Angular distance of the plungers of one group
- β Offset angle of the crank pins of one group to those of the other group
- γ Group offset angle of the plunger groups
- 30 Electric motor
- 31, 32 Displacement pump
- 34 Output shaft end
- E, F Plane
- x Crank angle axis
- f Conveying quantity curve
- d Pressure pulsation curve
- g1 to g6 Speed curves
Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2014/069431 WO2016037655A1 (en) | 2014-09-11 | 2014-09-11 | Displacing device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20170276123A1 true US20170276123A1 (en) | 2017-09-28 |
Family
ID=51535441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/509,379 Abandoned US20170276123A1 (en) | 2014-09-11 | 2014-09-11 | Displacing device |
Country Status (7)
Country | Link |
---|---|
US (1) | US20170276123A1 (en) |
EP (2) | EP3181902A1 (en) |
CN (1) | CN107076125A (en) |
BR (1) | BR112017004768A2 (en) |
CA (1) | CA2960908A1 (en) |
ES (1) | ES2687955T3 (en) |
WO (1) | WO2016037655A1 (en) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE315794C (en) | 1915-01-06 | 1919-11-13 | Giulio Silvestri | STAGE COMPRESSORS CONSISTING OF SIX AND MORE EVEN-NUMBERED ELEMENTS IN A STAR-SHAPED ARRANGEMENT |
US2394285A (en) | 1944-07-27 | 1946-02-05 | Bendix Aviat Corp | Pump |
FR1563223A (en) | 1968-03-01 | 1969-04-11 | ||
DE10153189A1 (en) * | 2001-10-27 | 2003-05-15 | Bosch Gmbh Robert | Fuel pump, fuel system, method for operating a fuel system and internal combustion engine |
US6832900B2 (en) | 2003-01-08 | 2004-12-21 | Thomas Industries Inc. | Piston mounting and balancing system |
DE102004048714A1 (en) | 2004-10-06 | 2006-04-13 | Siemens Ag | Radial piston pump |
US7654802B2 (en) | 2005-12-22 | 2010-02-02 | Newport Medical Instruments, Inc. | Reciprocating drive apparatus and method |
DE102007035100A1 (en) * | 2007-07-26 | 2009-01-29 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
DE102009027312A1 (en) * | 2009-06-30 | 2011-01-05 | Robert Bosch Gmbh | Multi-piston pump |
US20120234270A1 (en) * | 2011-03-17 | 2012-09-20 | GM Global Technology Operations LLC | Engine assembly including crankshaft for v4 arrangement |
AU2012258841B2 (en) | 2011-05-24 | 2016-09-29 | Invacare Corp. | Oxygen compressor with boost stage |
EP2802776A4 (en) | 2011-12-22 | 2015-12-09 | Ssig Medical Device Co Ltd | Pump |
US20150086402A1 (en) | 2012-03-30 | 2015-03-26 | Ulvac Kiko, Inc. | Pump device |
CN203868143U (en) * | 2013-12-12 | 2014-10-08 | 北京中清能发动机技术有限公司 | Bearing block, equipment body and reciprocating plunger pump using bearing block |
-
2014
- 2014-09-11 CA CA2960908A patent/CA2960908A1/en not_active Abandoned
- 2014-09-11 EP EP16207067.6A patent/EP3181902A1/en not_active Withdrawn
- 2014-09-11 CN CN201480081909.2A patent/CN107076125A/en active Pending
- 2014-09-11 EP EP14762011.6A patent/EP3060800B1/en not_active Not-in-force
- 2014-09-11 BR BR112017004768A patent/BR112017004768A2/en not_active Application Discontinuation
- 2014-09-11 WO PCT/EP2014/069431 patent/WO2016037655A1/en active Application Filing
- 2014-09-11 ES ES14762011.6T patent/ES2687955T3/en active Active
- 2014-09-11 US US15/509,379 patent/US20170276123A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
WO2016037655A1 (en) | 2016-03-17 |
BR112017004768A2 (en) | 2017-12-12 |
ES2687955T3 (en) | 2018-10-30 |
EP3060800B1 (en) | 2018-04-18 |
CA2960908A1 (en) | 2016-03-17 |
CN107076125A (en) | 2017-08-18 |
EP3181902A1 (en) | 2017-06-21 |
EP3060800A1 (en) | 2016-08-31 |
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