US20130230419A1 - Force-equalization stationary-coil actuator for fluid movers - Google Patents
Force-equalization stationary-coil actuator for fluid movers Download PDFInfo
- Publication number
- US20130230419A1 US20130230419A1 US13/877,570 US201113877570A US2013230419A1 US 20130230419 A1 US20130230419 A1 US 20130230419A1 US 201113877570 A US201113877570 A US 201113877570A US 2013230419 A1 US2013230419 A1 US 2013230419A1
- Authority
- US
- United States
- Prior art keywords
- fluid
- armatures
- coil
- fluid chamber
- housing
- 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
- 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
- F04B35/04—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 electric
-
- 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/047—Pumps having electric drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
-
- 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
- F04B35/04—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 electric
- F04B35/045—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 electric using solenoids
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/025—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel
-
- 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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
-
- 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
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/043—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms two or more plate-like pumping flexible members in parallel
Definitions
- This application relates to high-power long-life actuators for positive displacement fluid movers such as liquid pumps, gas compressors and synthetic jets.
- Positive displacement fluid movers can provide high flow and pressure however in order to be suitable for many applications such as medical devices; thermal management of computers, servers, LED lighting; and other electronics cooling applications these fluid movers must operate with low vibration and provide long life. Further, these applications require the fluid movers to be constructed in smaller and smaller sizes in order to fit in space constrained product platforms without loss of fluid performance.
- the present application discloses a dual armature/diaphragm actuator with a stationary coil mounted between the armatures, where the resulting magnetic force is applied directly between the two pistons thereby assuring that both pistons experience the same instantaneous actuation force in order to minimize vibration.
- the means of actuation integrates the piston and actuator components to reduce the size of fluid movers for a given pumping power output, while eliminating any dynamic electrical components, such as vibrating wires that could lead to failure and reduced life.
- FIG. 1 illustrates an embodiment of a fluid mover actuator that provides for the same actuator force being applied to both armatures.
- FIG. 2 is a sectional view of the actuator of FIG. 1 showing the flux path that occurs when the coil is energized.
- FIG. 3 is a sectional view that illustrates how the actuation system of FIG. 1 is applied to a fluid mover.
- FIG. 4 is sectional view of the fluid mover of FIG. 3 that shows the mounting of the stationary coil.
- FIG. 5 is a sectional view illustrating how both sides of each diaphragm can be used to form additional fluid chambers for applying energy to fluids.
- FIG. 6 provides sectional and exploded views of an armature design that increases actuator efficiency by improving coil utilization.
- FIG. 1 illustrates certain key functional concepts of a fluid actuator according to an exemplary embodiment of the present invention where a stationary coil 6 is positioned between an identical pair of armatures 2 and 4 .
- a magnetic field is generated within armatures 2 and 4 and the resulting flux loop path of the field is illustrated by the dotted lines in FIG. 2 .
- the magnetic field creates an attractive force in the air gap between the armatures that pulls the two armatures towards each other. Applying the force directly between the two armatures assures that the instantaneous forces, and therefore the force waveform, experienced by armatures 2 and 4 are always identical.
- FIG. 3 illustrates how the actuator of FIG. 1 is used in a fluid moving device.
- Armatures 16 and 18 are bonded to respective diaphragms 8 and 10 .
- Diaphragms 8 and 10 each have an annular cantilever spring matrix making the diaphragms capable of larger axial displacements.
- diaphragms 8 and 10 would have an elastomeric over molding (not shown) to provide a pressure seal.
- Diaphragms 8 and 10 represent one of many kinds of diaphragms that could be used within the scope of the present invention while still exploiting the actuation principles thereof.
- the diaphragms may be configured, for example, as shown in International Patent Application No.
- Diaphragms 8 and 10 form a pressure tight seal with housing 12 .
- Compression chamber 20 is bounded by diaphragms 8 and 10 and housing 12 .
- the coil When the coil is energized the magnetic forces cause armatures 16 and 18 to move towards each other along with their respective diaphragms 8 and 10 resulting in a volume reduction of fluid chamber 20 .
- the coil When the coil is turned off, the potential energy stored in the diaphragm springs will push the armatures and diaphragms back in the opposite direction resulting in a volume increase of fluid chamber 20 .
- the resulting cyclic volume decrease and increase associated with switching the coil off and on will impart energy to the fluid in fluid chamber 20 providing the fluid energy needed for the particular application such as, for example, pumping liquids and gases or powering synthetic jets or other fluid moving applications such as mixing, metering or sampling to name a few.
- armatures 16 and 18 result in reaction forces being transmitted to housing 12 via respective diaphragms 8 and 10 .
- the reactions forces will cancel resulting in minimal housing vibration if the displacements of armatures 16 and 18 are equal.
- a fluid moving actuator as disclosed herein may operate so that each armature will execute the same displacement amplitude and displacement waveform, thereby fulfilling the conditions required for zero or minimal housing vibration.
- the fluid mover of FIG. 3 can be operated at its mechanical mass-spring resonance frequency where the resonance frequency is determined by the combined spring stiffness of the diaphragm and fluid and the mass of the fluid and armature.
- FIG. 4 The fluid mover of FIG. 3 is shown in FIG. 4 with a different sectional view in order to show how the coil may be rigidly mounted to housing 12 .
- Coil 14 is held by coil clamps 22 and 24 which in turn are clamped into housing 12 .
- This stationary coil design eliminates the need for the moving power leads of a dynamic coil and also eliminates the potential failure of those leads or wires thereby promoting life and reliability.
- FIG. 5 shows the addition of end plates 26 and 28 which create respective fluid chambers 30 and 32 .
- Fluid chambers 30 and 32 can be used to convey energy to fluid for any of the above mentioned applications.
- FIG. 6 shows an armature design for improving electro-mechanical transduction efficiency.
- opposing armatures 40 and 42 are attached to respective diaphragms 34 and 36 with the diaphragms in turn being attached to housing 38 .
- a stationary coil 44 is rigidly mounted to housing 38 by coil arms 46 and 48 .
- the coil is more completely surrounded with the armature material compared to the design shown in FIGS.
- a fluid actuator according to the present invention can be driven at any frequency within the scope of the present invention. While performance advantages can be provided by operating the actuator at drive frequencies that are equal to or close to its mass-spring resonance, the scope of the present invention is not limited to the proximity of the drive frequency to the mass-spring resonance frequency. When drive frequencies are close enough to the mass-spring resonance that energy is stored in the resonance, then armature-diaphragm amplitudes will increase in proportion to the stored energy. The closer the drive frequency is to the instantaneous resonance frequency, the greater the stored energy and the greater the armature/diaphragm displacement and the greater the power transferred to the fluid in the fluid chamber for a given input power level. Operation of an actuator according to the present invention, either with or without stored energy, is considered within the scope of the present invention.
- the armatures would typically be made of ferrous type metals having high magnetic permeability but that the degree of permeability and loss characteristics required will be based on the requirements of a given application.
- drive circuits may be used to power a fluid mover actuator according to the present invention and will be apparent to one skilled in the art and these drive circuits may include resonance locking controls, such as a phase locked loop control or other CPU-based controls, to keep the drive frequency locked to the mechanical resonance frequency which can change due to changing system conditions.
- resonance locking controls such as a phase locked loop control or other CPU-based controls
- Many different voltage waveforms can also be used to drive the fluid mover actuator according to the present invention and waveform characteristics and duty cycles will be chosen according to the requirements of the end product or application.
- Applications for a fluid mover actuator according to the present invention include moving air or liquids for heat exchange in thermal management applications via air pumps, liquid pumps or synthetic jets for a wide range of hot objects including electronics components such as microprocessors, power electronics components such as MODFETS, HBLEDs and any electronics components needing cooling as well as secondary heat exchange targets such as heatsinks, printed circuit cards and electronics enclosures.
- Products needing such cooling include servers, PC towers, laptops, HBLED lamps, consumer electronics, PDAs or sealed electronics enclosures such as in cell phones, telecommunications and military applications.
Abstract
Description
- This application relates to high-power long-life actuators for positive displacement fluid movers such as liquid pumps, gas compressors and synthetic jets.
- Positive displacement fluid movers can provide high flow and pressure however in order to be suitable for many applications such as medical devices; thermal management of computers, servers, LED lighting; and other electronics cooling applications these fluid movers must operate with low vibration and provide long life. Further, these applications require the fluid movers to be constructed in smaller and smaller sizes in order to fit in space constrained product platforms without loss of fluid performance.
- If fluid movers could use two pistons that move in opposition to each other then vibration would be minimized but to make this two piston approach practical requires that the same force waveform be applied to each piston. Separate actuation of each piston adds size, mechanical complexity and cost and the challenge of matching the force on each piston would require a control scheme which adds further complexity and cost.
- As such an unmet need exists for improvements in fluid mover actuation that enables integration of fluid mover components to achieve smaller sizes without loss of performance or life while providing a simple means to assure that an identical force waveform is applied to each piston.
- To satisfy these needs and overcome the limitations of previous efforts, the present application discloses a dual armature/diaphragm actuator with a stationary coil mounted between the armatures, where the resulting magnetic force is applied directly between the two pistons thereby assuring that both pistons experience the same instantaneous actuation force in order to minimize vibration. To further satisfy these needs and overcome the limitations of previous efforts, the means of actuation integrates the piston and actuator components to reduce the size of fluid movers for a given pumping power output, while eliminating any dynamic electrical components, such as vibrating wires that could lead to failure and reduced life.
- The accompanying drawings, which are incorporated in and form a part of the specification, illustrate the embodiments of the present invention and, together with the description, serve to explain the principles of the invention. In the drawings:
-
FIG. 1 illustrates an embodiment of a fluid mover actuator that provides for the same actuator force being applied to both armatures. -
FIG. 2 is a sectional view of the actuator ofFIG. 1 showing the flux path that occurs when the coil is energized. -
FIG. 3 is a sectional view that illustrates how the actuation system ofFIG. 1 is applied to a fluid mover. -
FIG. 4 is sectional view of the fluid mover ofFIG. 3 that shows the mounting of the stationary coil. -
FIG. 5 is a sectional view illustrating how both sides of each diaphragm can be used to form additional fluid chambers for applying energy to fluids. -
FIG. 6 provides sectional and exploded views of an armature design that increases actuator efficiency by improving coil utilization. -
FIG. 1 illustrates certain key functional concepts of a fluid actuator according to an exemplary embodiment of the present invention where astationary coil 6 is positioned between an identical pair ofarmatures armatures FIG. 2 . The magnetic field creates an attractive force in the air gap between the armatures that pulls the two armatures towards each other. Applying the force directly between the two armatures assures that the instantaneous forces, and therefore the force waveform, experienced byarmatures -
FIG. 3 illustrates how the actuator ofFIG. 1 is used in a fluid moving device. Armatures 16 and 18 are bonded torespective diaphragms diaphragms housing 12.Compression chamber 20 is bounded bydiaphragms housing 12. When the coil is energized the magnetic forces causearmatures respective diaphragms fluid chamber 20. When the coil is turned off, the potential energy stored in the diaphragm springs will push the armatures and diaphragms back in the opposite direction resulting in a volume increase offluid chamber 20. The resulting cyclic volume decrease and increase associated with switching the coil off and on will impart energy to the fluid influid chamber 20 providing the fluid energy needed for the particular application such as, for example, pumping liquids and gases or powering synthetic jets or other fluid moving applications such as mixing, metering or sampling to name a few. - The oscillation of
armatures housing 12 viarespective diaphragms armatures diaphragms armatures - The fluid mover of
FIG. 3 can be operated at its mechanical mass-spring resonance frequency where the resonance frequency is determined by the combined spring stiffness of the diaphragm and fluid and the mass of the fluid and armature. - The fluid mover of
FIG. 3 is shown inFIG. 4 with a different sectional view in order to show how the coil may be rigidly mounted tohousing 12. In order to show the mounting arrangement, only one of the diaphragms is now shown inFIG. 4 .Coil 14 is held bycoil clamps housing 12. This stationary coil design eliminates the need for the moving power leads of a dynamic coil and also eliminates the potential failure of those leads or wires thereby promoting life and reliability. - With any of the above mentioned fluid moving applications, both sides of the diaphragms can be used for fluid work. For example,
FIG. 5 shows the addition ofend plates respective fluid chambers Fluid chambers - The scope of the present invention includes numerous additional variations to the fluid mover actuator described herein. For example the design of the armatures and the resulting flux path may be altered in many ways while still providing a force directly between the armatures by means of a stationary coil located between the armatures.
FIG. 6 shows an armature design for improving electro-mechanical transduction efficiency. As shown inFIG. 6 ,opposing armatures respective diaphragms housing 38. Astationary coil 44 is rigidly mounted tohousing 38 bycoil arms FIG. 6 , the coil is more completely surrounded with the armature material compared to the design shown inFIGS. 3 and 4 , where a portion of the coil is outside the armature material. Sections of the coil that are outside the armature material generate less of a magnetic field in the armatures which reduces the actuator's efficiency. Further variations may include alternate components used to create the force such as permanent magnets and moving-magnet stationary-coil voice coil type actuators, where the armatures would be replaced with a voice-coil type magnet and backing magnet iron to provide a coil air gap having a permanent magnetic field. Specific subcomponent designs for an actuator according to the present invention will be determined by good design practice in response to specific design and end-product requirements. - The various embodiments of a fluid actuator according to the present invention can be driven at any frequency within the scope of the present invention. While performance advantages can be provided by operating the actuator at drive frequencies that are equal to or close to its mass-spring resonance, the scope of the present invention is not limited to the proximity of the drive frequency to the mass-spring resonance frequency. When drive frequencies are close enough to the mass-spring resonance that energy is stored in the resonance, then armature-diaphragm amplitudes will increase in proportion to the stored energy. The closer the drive frequency is to the instantaneous resonance frequency, the greater the stored energy and the greater the armature/diaphragm displacement and the greater the power transferred to the fluid in the fluid chamber for a given input power level. Operation of an actuator according to the present invention, either with or without stored energy, is considered within the scope of the present invention.
- It is also understood that according to the various embodiments of a fluid mover actuator according to the present invention, the armatures would typically be made of ferrous type metals having high magnetic permeability but that the degree of permeability and loss characteristics required will be based on the requirements of a given application.
- Many different drive circuits may be used to power a fluid mover actuator according to the present invention and will be apparent to one skilled in the art and these drive circuits may include resonance locking controls, such as a phase locked loop control or other CPU-based controls, to keep the drive frequency locked to the mechanical resonance frequency which can change due to changing system conditions. Many different voltage waveforms can also be used to drive the fluid mover actuator according to the present invention and waveform characteristics and duty cycles will be chosen according to the requirements of the end product or application.
- Applications for a fluid mover actuator according to the present invention include moving air or liquids for heat exchange in thermal management applications via air pumps, liquid pumps or synthetic jets for a wide range of hot objects including electronics components such as microprocessors, power electronics components such as MODFETS, HBLEDs and any electronics components needing cooling as well as secondary heat exchange targets such as heatsinks, printed circuit cards and electronics enclosures. Products needing such cooling include servers, PC towers, laptops, HBLED lamps, consumer electronics, PDAs or sealed electronics enclosures such as in cell phones, telecommunications and military applications.
- Other applications include general mixing of gases and particulate matter for chemical reactions, fluid metering; miniature air and fuel pumps for micro fuel cells; miniature pumps for liquid sampling, air sampling for bio-chem warfare agents and general chemical analysis or creating other material changes in suspended particulates such as comminution or agglomeration, or a combination of any of these processes, to name a few.
- The foregoing description of some of the embodiments of the present invention have been presented for purposes of illustration and description. In the drawings provided, the subcomponents of individual embodiments provided herein are not necessarily drawn in proportion to each other, for the sake of functional clarity. In an actual product, the relative proportions of the individual components are determined by specific engineering design requirements. The embodiments provided herein are not intended to be exhaustive or to limit the invention to a precise form disclosed, and obviously many modifications and variations are possible in light of the above teachings. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application to thereby enable others skilled in the art to best utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. Although the above description contains multiple specifications, these should not be construed as limitations on the scope of the invention, but rather as an exemplification of alternative embodiments thereof.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/877,570 US20130230419A1 (en) | 2010-10-08 | 2011-10-07 | Force-equalization stationary-coil actuator for fluid movers |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US39152410P | 2010-10-08 | 2010-10-08 | |
US13/877,570 US20130230419A1 (en) | 2010-10-08 | 2011-10-07 | Force-equalization stationary-coil actuator for fluid movers |
PCT/US2011/055196 WO2012048179A2 (en) | 2010-10-08 | 2011-10-07 | Force-equalization stationary-coil actuator for fluid movers |
Publications (1)
Publication Number | Publication Date |
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US20130230419A1 true US20130230419A1 (en) | 2013-09-05 |
Family
ID=45928449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/877,570 Abandoned US20130230419A1 (en) | 2010-10-08 | 2011-10-07 | Force-equalization stationary-coil actuator for fluid movers |
Country Status (7)
Country | Link |
---|---|
US (1) | US20130230419A1 (en) |
EP (1) | EP2625434A4 (en) |
JP (1) | JP5941471B2 (en) |
CN (1) | CN103210218B (en) |
BR (1) | BR112013008181A2 (en) |
IN (1) | IN2013MN00704A (en) |
WO (1) | WO2012048179A2 (en) |
Cited By (2)
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US20170198687A1 (en) * | 2016-01-13 | 2017-07-13 | Robert Bosch Gmbh | Pump apparatus and particle detector having a pump apparatus |
US9855186B2 (en) | 2014-05-14 | 2018-01-02 | Aytu Women's Health, Llc | Devices and methods for promoting female sexual wellness and satisfaction |
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ATE456383T1 (en) | 2006-09-28 | 2010-02-15 | Tyco Healthcare | PORTABLE WOUND THERAPY SYSTEM |
CN101868203B (en) | 2007-11-21 | 2014-10-22 | 史密夫及内修公开有限公司 | Wound dressing |
GB201015656D0 (en) | 2010-09-20 | 2010-10-27 | Smith & Nephew | Pressure control apparatus |
US9084845B2 (en) | 2011-11-02 | 2015-07-21 | Smith & Nephew Plc | Reduced pressure therapy apparatuses and methods of using same |
WO2013140255A1 (en) | 2012-03-20 | 2013-09-26 | Smith & Nephew Plc | Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination |
US9427505B2 (en) | 2012-05-15 | 2016-08-30 | Smith & Nephew Plc | Negative pressure wound therapy apparatus |
WO2015042098A1 (en) * | 2013-09-18 | 2015-03-26 | Aavid Thermalloy, Llc | Split fluidic diaphragm |
CN106460825B (en) * | 2014-05-05 | 2019-05-10 | 阿威德热合金有限公司 | The planar coil and supporting element of actuator for fluid mover |
US10780202B2 (en) | 2014-12-22 | 2020-09-22 | Smith & Nephew Plc | Noise reduction for negative pressure wound therapy apparatuses |
WO2016176132A1 (en) | 2015-04-29 | 2016-11-03 | Aavid Thermalloy, Llc | Planar spring for fluid mover |
CN109185554B (en) * | 2018-09-30 | 2019-10-18 | 浙江大学 | A kind of miniature flexible valve of voice coil driving |
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2011
- 2011-10-07 EP EP11831649.6A patent/EP2625434A4/en not_active Withdrawn
- 2011-10-07 US US13/877,570 patent/US20130230419A1/en not_active Abandoned
- 2011-10-07 CN CN201180054608.7A patent/CN103210218B/en not_active Expired - Fee Related
- 2011-10-07 WO PCT/US2011/055196 patent/WO2012048179A2/en active Application Filing
- 2011-10-07 BR BR112013008181A patent/BR112013008181A2/en not_active Application Discontinuation
- 2011-10-07 JP JP2013532964A patent/JP5941471B2/en not_active Expired - Fee Related
-
2013
- 2013-04-10 IN IN704MUN2013 patent/IN2013MN00704A/en unknown
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US20030162071A1 (en) * | 2001-02-21 | 2003-08-28 | Hisafumi Yasuda | Actuator device for force-feeding air, and air force-feed type air cell |
US6969345B2 (en) * | 2002-12-06 | 2005-11-29 | World Heart Corporation | Miniature, pulsatile implantable ventricular assist devices and methods of controlling ventricular assist devices |
US8272851B2 (en) * | 2006-03-07 | 2012-09-25 | Influent Corporation | Fluidic energy transfer devices |
US20080240942A1 (en) * | 2007-03-23 | 2008-10-02 | Carl Freudenberg Kg | Diaphragm pump for pumping a fluid |
US20110277968A1 (en) * | 2010-05-14 | 2011-11-17 | Foxconn Technology Co., Ltd. | Airflow generator and heat dissipation device incorporating the same |
Cited By (2)
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US9855186B2 (en) | 2014-05-14 | 2018-01-02 | Aytu Women's Health, Llc | Devices and methods for promoting female sexual wellness and satisfaction |
US20170198687A1 (en) * | 2016-01-13 | 2017-07-13 | Robert Bosch Gmbh | Pump apparatus and particle detector having a pump apparatus |
Also Published As
Publication number | Publication date |
---|---|
BR112013008181A2 (en) | 2016-06-21 |
WO2012048179A3 (en) | 2012-08-30 |
EP2625434A4 (en) | 2017-06-21 |
JP5941471B2 (en) | 2016-06-29 |
JP2013545007A (en) | 2013-12-19 |
EP2625434A2 (en) | 2013-08-14 |
CN103210218B (en) | 2016-05-11 |
CN103210218A (en) | 2013-07-17 |
WO2012048179A2 (en) | 2012-04-12 |
IN2013MN00704A (en) | 2015-06-12 |
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