US20060073039A1 - Linear oscillating pressurizing device - Google Patents
Linear oscillating pressurizing device Download PDFInfo
- Publication number
- US20060073039A1 US20060073039A1 US10/957,585 US95758504A US2006073039A1 US 20060073039 A1 US20060073039 A1 US 20060073039A1 US 95758504 A US95758504 A US 95758504A US 2006073039 A1 US2006073039 A1 US 2006073039A1
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- United States
- Prior art keywords
- piston element
- pressurizing device
- recited
- electromagnetic
- control circuit
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- 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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- 239000012530 fluid Substances 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 230000001131 transforming effect Effects 0.000 claims 2
- 230000033001 locomotion Effects 0.000 abstract description 7
- 230000036772 blood pressure Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002085 persistent effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- 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
Definitions
- the present invention relates generally to a linear oscillating pressurizing device, and more particularly to a linear oscillating pressurizing device that employs a permanent magnetic piston and two electromagnetic element to drive a piston element having an air inlet performing a reciprocating movement via a series of oscillating current pulse generated from a digital control circuit, thereby completing a pressuring action by employing the reciprocating movement of the piston element.
- pumps such as pumps, or hydraulic or air pressurizing device, add energy or pressure to air or liquid.
- pumps can be divided into centrifugal pumps and reciprocating pumps.
- the centrifugal pumps employ rotating blades to perform pressurizing actions, which is suitable for systems of high flow volume, low viscosity and static pressure.
- the aforementioned reciprocating pumps are widely used in low flow volume pumping device or system. In other words, this type of pump can not be used in devices that require high flow volume or high pressure.
- the reciprocating pumps include steam pump and power pump.
- the power pump uses the persistent rotation of a motor to drive a piston through a shaft to generate persistent reciprocating motion of the piston.
- a pressure difference is formed between inside and outside of the pump, resulting into opening and closing of a valve element so as to complete one cycle of pressure transfer.
- such shaft transmission structure can easily waste energy output from the motor, especially when changing the moving direction of the shaft.
- the presence of the shaft requires the pump to have a larger volume. Therefore, it is not suitable for products of small volume, such as a blood pressure meter, especially a wrist type blood pressure meter or a finger type blood pressure meter.
- oscillating linear motor/driver is primarily applied to an actuator or an oscillating pump.
- the most commonly seen oscillating drivers include electromagnetic force only drivers and hybrid drivers.
- the electromagnetic force only drivers are driven purely by electromagnetic force.
- an armature that reacts to magnetic force is driven to reciprocate between two external electromagnetic elements.
- the present invention is to provide a linear oscillating pressurizing device that employs a piston element made of permanent magnet and two electromagnetic elements.
- a series of oscillating current pulse cycle generated from a control circuit can drive the piston element having an air inlet valve to perform reciprocating movement and the air inlet control during the reciprocating movement, so as to complete the pressurizing action.
- the present invention is also to provide a linear oscillating pressurizing device that employs a control circuit to generate a series of current pulses to magnetize the two electromagnetic elements to have the same polarity and to change polarity in response to current pulse cycle.
- the simultaneous attractive and repulsive forces exerted on the piston element by the two electromagnetic elements double the pressurizing effect.
- the present invention is yet also to provide a linear oscillating pressurizing device that employs a control circuit to generate a series of oscillating current pulse cycle to directly drive the piston element made of permanent magnet and the direction of magnetic forces of the two electromagnetic elements.
- the size of such a pressurizing device can largely be reduced and applicable to micro devices such as wrist or finger electronic blood pressure meters, or other pressurizing devices.
- the operation noise of the present invention is also very low.
- FIG. 1 illustrates a conventional reciprocating actuator of electromagnetic force only type.
- FIG. 2 illustrates a conventional reciprocating actuator of hybrid type.
- FIG. 3 is a sectional view of the linear oscillating pressurizing device, in accordance with one embodiment of the present invention.
- FIG. 4 is a block diagram of a control circuit, in accordance with one embodiment of the present invention.
- FIG. 5 is a schematic diagram illustrating the pressurizing and air flow status, in accordance with one embodiment of the present invention.
- the pressurizing device includes: a main body 1 to contain all necessary elements of the present invention; two electromagnetic elements 21 , 22 disposed in the main body 1 ; a piston element 3 disposed between the two electromagnetic elements 21 , 22 ; and a control circuit 4 (not shown) electrically coupling the two electromagnetic elements 21 , 22 to control magnetic properties.
- the main body 1 includes an air room 14 and an air chamber 15 , thereby defining a hollow space for proper operation.
- An air outlet end 11 is formed on one end of the main body 1 to provide air (or liquid) output.
- the output of fluid is controlled by turning on and off of a outlet valve 12 .
- An air inlet end 12 is formed on the other end of the main body 1 to provide air (or liquid) input.
- the magnetic elements 21 , 22 are periodically driven by current pulses from a digital control circuit to make the magnetic elements 21 , 22 magnetized and change the magnetic properties thereof.
- the electromagnetic elements 21 , 22 are disposed inside of the main body 1 (such as the upper and lower ends of FIG. 3 ). Air passages 91 , 92 are formed corresponding to the holes 13 , 10 .
- the space between the two electromagnetic elements 21 , 22 is substantially the reciprocating space of the piston element 3 .
- the piston element 3 is disposed between the two electromagnetic elements 21 , 22 , as shown in FIG. 3 .
- the piston element 3 is made of a permanent magnet. In this manner, when the electromagnetic element 21 , 22 are magnetically excited, the piston element 3 can be attractively and repulsively driven towards one direction. Next, when changing the magnetic properties of the electromagnetic elements 21 , 22 , which will be described in detail in the following, the piston element 3 is driven to move towards the other direction. By changing the magnetic properties of the electromagnetic elements 21 , 22 , the piston element 3 reciprocates and repeatedly guides external air into the air bag 36 . It is appreciated that the present invention is not applicable only to the air bag 36 , but applicable to other things that needs pressurization and pumping.
- a hole 31 is formed on the end surface of the piston element 3 to dispose an air inlet valve 30 , thereby providing the piston element 3 to turn on and off of air (or fluid) inlet during the reciprocating movement.
- the control circuit 4 can be of a digital type.
- the output end of the control circuit 4 is connected to the two electromagnetic element 21 , 22 , so as to use the generated series of current pulse cycle to excite and change the polarity of the two electromagnetic elements 21 , 22 .
- the control circuit 4 includes a power switch circuit 41 for switching the external direct current power source, such as a battery, to alternating current. In this manner, the alternating current power source then has positive and negative pulse cycles to generate magnetic properties of different sort.
- An oscillating circuit 42 is connected to the power switch circuit 4 for generating a series of positive and negative current pulse cycle according to the input current described above, so as to drive and control the electromagnetic element 21 , 22 for generating magnetic excitation and polarity changes.
- FIG. 5 a to FIG. 5 c illustrate the pressurizing operation of the linear oscillating pressurizing device.
- the piston element 3 is in its standby status before any reciprocation.
- the piston element adjacent the electromagnetic element 21 is an S pole, while the other end is an N pole.
- the piston element 3 is located more adjacent to the electromagnetic element 21 , and the air inlet valve 30 and air outlet valve 12 are both closed.
- the control circuit 4 feeds in one cycle of a half wave current pulse (e.g. positive half wave current pulse) to the two electromagnetic elements 21 , 22 , the two electromagnetic elements 21 , 22 are both magnetically excited to have the same polarity (e.g. S pole).
- a half wave current pulse e.g. positive half wave current pulse
- the electromagnetic element 21 and the piston element 3 form a repulsive magnetic force F 1 (S pole to S pole), while the electromagnetic element 22 and the piston element 3 form an attractive magnetic force F 2 (S pole to N pole).
- F 1 S pole to S pole
- F 2 S pole to N pole
- the piston element 3 moves towards the magnetic element 22 , the air pressure in the air chamber 15 is lower than the atmospheric pressure, while the air pressure outside of the air chamber 15 is equal to the atmospheric pressure, thereby forming a pressure difference therebetween.
- the air flow enters into the air chamber 15 through the air inlet end 13 from outside.
- This air flow (or fluid flow) opens the air inlet valve 30 and closes the air outlet valve 12 . This is because that pressure in the air room 14 is higher than that of the air chamber 15 .
- the control circuit feeds in a negative half wave current pulse to the two magnetic elements 21 , 22 .
- the two magnetic elements 21 , 22 are both excited to another polarity (e.g. N pole).
- the electromagnetic element 22 and the piston element 3 form a repulsive magnetic force F 3
- the electromagnetic element 21 and the piston element 3 form an attractive magnetic force F 4 .
- one can derive a magnetic force double to that of the conventional reciprocating magnetic pump to drive the piston element 3 moving towards the magnetic element 21 i.e. marked as an arrow M, as shown in FIG. 5 c ).
- the piston element 3 moves towards the magnetic element 21 , there is formed a pressure difference.
- the air pressure in the air chamber 15 is higher than the atmospheric pressure, while the air pressure outside of the air chamber 15 is equal to the atmospheric pressure.
- the air pressure in the air room 14 is higher than the atmospheric pressure but smaller than that of the air chamber 15 .
- This pressure difference causes an air flow (or fluid flow) from high pressure area to low pressure area.
- This air flow (or fluid flow) closes the air inlet valve 30 and opens the air outlet valve 12 , as shown in FIG. 5 c .
- the pressurized air flow is thus input into the air bag 36 through the air valve 12 .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
A linear oscillating pressurizing includes a main body having an air outlet end and an air outlet valve, two electromagnetic elements disposed in the main body, a piston element disposed between the two electromagnetic elements, which has an air inlet valve disposed thereon, and a control circuit to generate oscillating current pulses. By using a series of current pulses generated from the control circuit, one can magnetize the two electromagnetic elements to the same polarity. By changing the polarity of the electromagnetic element, the attractive force and the repulsive force exerted on the piston element doubles the magnetic force used for reciprocating the piston element. By further incorporating the reciprocating movement of the piston element with the air flow, a pressurizing device having a doubled pressurizing output is obtained.
Description
- The present invention relates generally to a linear oscillating pressurizing device, and more particularly to a linear oscillating pressurizing device that employs a permanent magnetic piston and two electromagnetic element to drive a piston element having an air inlet performing a reciprocating movement via a series of oscillating current pulse generated from a digital control circuit, thereby completing a pressuring action by employing the reciprocating movement of the piston element.
- Conventional pressuring devices, such as pumps, or hydraulic or air pressurizing device, add energy or pressure to air or liquid. In general, pumps can be divided into centrifugal pumps and reciprocating pumps. The centrifugal pumps employ rotating blades to perform pressurizing actions, which is suitable for systems of high flow volume, low viscosity and static pressure.
- The aforementioned reciprocating pumps are widely used in low flow volume pumping device or system. In other words, this type of pump can not be used in devices that require high flow volume or high pressure. The reciprocating pumps include steam pump and power pump. The power pump uses the persistent rotation of a motor to drive a piston through a shaft to generate persistent reciprocating motion of the piston. By incorporating the displacement of the piston and the change of direction, a pressure difference is formed between inside and outside of the pump, resulting into opening and closing of a valve element so as to complete one cycle of pressure transfer. However, such shaft transmission structure can easily waste energy output from the motor, especially when changing the moving direction of the shaft. The presence of the shaft requires the pump to have a larger volume. Therefore, it is not suitable for products of small volume, such as a blood pressure meter, especially a wrist type blood pressure meter or a finger type blood pressure meter.
- Till now, an oscillating linear motor/driver is primarily applied to an actuator or an oscillating pump. The most commonly seen oscillating drivers include electromagnetic force only drivers and hybrid drivers. The electromagnetic force only drivers are driven purely by electromagnetic force. By purely relying on the attractive force of the magnetic force, an armature that reacts to magnetic force is driven to reciprocate between two external electromagnetic elements.
- The present invention is to provide a linear oscillating pressurizing device that employs a piston element made of permanent magnet and two electromagnetic elements. A series of oscillating current pulse cycle generated from a control circuit can drive the piston element having an air inlet valve to perform reciprocating movement and the air inlet control during the reciprocating movement, so as to complete the pressurizing action.
- The present invention is also to provide a linear oscillating pressurizing device that employs a control circuit to generate a series of current pulses to magnetize the two electromagnetic elements to have the same polarity and to change polarity in response to current pulse cycle. The simultaneous attractive and repulsive forces exerted on the piston element by the two electromagnetic elements double the pressurizing effect.
- The present invention is yet also to provide a linear oscillating pressurizing device that employs a control circuit to generate a series of oscillating current pulse cycle to directly drive the piston element made of permanent magnet and the direction of magnetic forces of the two electromagnetic elements. The size of such a pressurizing device can largely be reduced and applicable to micro devices such as wrist or finger electronic blood pressure meters, or other pressurizing devices. In addition, the operation noise of the present invention is also very low.
-
FIG. 1 illustrates a conventional reciprocating actuator of electromagnetic force only type. -
FIG. 2 illustrates a conventional reciprocating actuator of hybrid type. -
FIG. 3 is a sectional view of the linear oscillating pressurizing device, in accordance with one embodiment of the present invention. -
FIG. 4 is a block diagram of a control circuit, in accordance with one embodiment of the present invention. -
FIG. 5 is a schematic diagram illustrating the pressurizing and air flow status, in accordance with one embodiment of the present invention. - In order to better understanding the features and technical contents of the present invention, the present invention is hereinafter described in detail by incorporating with the accompanying drawings. However, the accompanying drawings are only for the convenience of illustration and description, no limitation is intended thereto.
- Referring first to
FIG. 3 andFIG. 4 , a linear oscillating pressurizing device in accordance with one embodiment of the present invention is illustrated. As shown, the pressurizing device includes: amain body 1 to contain all necessary elements of the present invention; twoelectromagnetic elements main body 1; apiston element 3 disposed between the twoelectromagnetic elements electromagnetic elements - The
main body 1 includes anair room 14 and anair chamber 15, thereby defining a hollow space for proper operation. Anair outlet end 11 is formed on one end of themain body 1 to provide air (or liquid) output. The output of fluid is controlled by turning on and off of aoutlet valve 12. Anair inlet end 12 is formed on the other end of themain body 1 to provide air (or liquid) input. - The
magnetic elements magnetic elements electromagnetic elements FIG. 3 ).Air passages holes electromagnetic elements piston element 3. - The
piston element 3 is disposed between the twoelectromagnetic elements FIG. 3 . Thepiston element 3 is made of a permanent magnet. In this manner, when theelectromagnetic element piston element 3 can be attractively and repulsively driven towards one direction. Next, when changing the magnetic properties of theelectromagnetic elements piston element 3 is driven to move towards the other direction. By changing the magnetic properties of theelectromagnetic elements piston element 3 reciprocates and repeatedly guides external air into theair bag 36. It is appreciated that the present invention is not applicable only to theair bag 36, but applicable to other things that needs pressurization and pumping. Ahole 31 is formed on the end surface of thepiston element 3 to dispose anair inlet valve 30, thereby providing thepiston element 3 to turn on and off of air (or fluid) inlet during the reciprocating movement. - As shown in
FIG. 4 , thecontrol circuit 4 can be of a digital type. The output end of thecontrol circuit 4 is connected to the twoelectromagnetic element electromagnetic elements control circuit 4 includes apower switch circuit 41 for switching the external direct current power source, such as a battery, to alternating current. In this manner, the alternating current power source then has positive and negative pulse cycles to generate magnetic properties of different sort. An oscillatingcircuit 42 is connected to thepower switch circuit 4 for generating a series of positive and negative current pulse cycle according to the input current described above, so as to drive and control theelectromagnetic element circuit 42 to generate directly a series of positive and negative current pulse cycle of different frequencies, thereby directly controlling or change the pressurization speed. -
FIG. 5 a toFIG. 5 c illustrate the pressurizing operation of the linear oscillating pressurizing device. Referring toFIG. 5 a, thepiston element 3 is in its standby status before any reciprocation. Here, we assume that the piston element adjacent theelectromagnetic element 21 is an S pole, while the other end is an N pole. Before thepiston element 3 starts reciprocating, thepiston element 3 is located more adjacent to theelectromagnetic element 21, and theair inlet valve 30 andair outlet valve 12 are both closed. When thecontrol circuit 4 feeds in one cycle of a half wave current pulse (e.g. positive half wave current pulse) to the twoelectromagnetic elements electromagnetic elements electromagnetic element 21 and thepiston element 3 form a repulsive magnetic force F1 (S pole to S pole), while theelectromagnetic element 22 and thepiston element 3 form an attractive magnetic force F2 (S pole to N pole). Thus, one can derive a magnetic force double to that of the conventional reciprocating magnetic pump to drive thepiston element 3 moving towards the magnetic element 22 (i.e. marked as an arrow M, as shown inFIG. 5 b). When thepiston element 3 moves towards themagnetic element 22, the air pressure in theair chamber 15 is lower than the atmospheric pressure, while the air pressure outside of theair chamber 15 is equal to the atmospheric pressure, thereby forming a pressure difference therebetween. By employing such a pressure difference, the air flow (or fluid flow) enters into theair chamber 15 through theair inlet end 13 from outside. This air flow (or fluid flow) opens theair inlet valve 30 and closes theair outlet valve 12. This is because that pressure in theair room 14 is higher than that of theair chamber 15. - After completing the air flow or fluid flow input described above, the control circuit feeds in a negative half wave current pulse to the two
magnetic elements magnetic elements electromagnetic element 22 and thepiston element 3 form a repulsive magnetic force F3, while theelectromagnetic element 21 and thepiston element 3 form an attractive magnetic force F4. Thus, one can derive a magnetic force double to that of the conventional reciprocating magnetic pump to drive thepiston element 3 moving towards the magnetic element 21 (i.e. marked as an arrow M, as shown inFIG. 5 c). When thepiston element 3 moves towards themagnetic element 21, there is formed a pressure difference. That is, the air pressure in theair chamber 15 is higher than the atmospheric pressure, while the air pressure outside of theair chamber 15 is equal to the atmospheric pressure. In addition, the air pressure in theair room 14 is higher than the atmospheric pressure but smaller than that of theair chamber 15. This pressure difference causes an air flow (or fluid flow) from high pressure area to low pressure area. This air flow (or fluid flow) closes theair inlet valve 30 and opens theair outlet valve 12, as shown inFIG. 5 c. The pressurized air flow is thus input into theair bag 36 through theair valve 12. - The present invention includes the following features and advantages:
-
- 1. Since two electromagnetic elements incorporating with the piston element made of permanent magnet can form an attractive force at one end and a repulse force in the other end, the driving force is doubled than the conventional pressurizing device, which obtains a high pressure (or high flow volume) pressurizing effect.
- 2. The pressurizing device including a main body, electromagnetic elements and a piston element is driven by a control circuit, which can further reduce the size of the pressurizing device to be applicable to micro device.
- 3. The control circuit is independent of the pressurizing operation. Therefore, a series of positive and negative current pulse cycle of different frequencies can be generated directly by adjusting the capacitance and resistance thereof, thereby controlling the flow rate and the pressurizing speed.
- 4. The pressurizing device includes a main body, electromagnetic elements and a piston element, which is driven by a control circuit. Therefore the structure of the pressurizing device is simplified and the manufacturing cost is reduced.
- 5. In contrast to the conventional motor control, the present invention does not require the use of a brush motor. Therefore, the present invention is quiet in operation.
- Since, any person having ordinary skill in the art may readily find various equivalent alterations or modifications in light of the features as disclosed above, it is appreciated that the scope of the present invention is defined in the following claims. Therefore, all such equivalent alterations or modifications without departing from the subject matter as set forth in the following claims is considered within the spirit and scope of the present invention.
Claims (12)
1. A linear oscillating pressurizing device, comprising:
a main body with fluid contained therein;
two electromagnetic elements disposed in the main body; and
a piston element made of permanent magnet, which is disposed between the two electromagnetic elements, comprising an air inlet valve;
whereby the two magnetic elements are temporarily magnetized to drive the piston element so that the fluid is guided through the air inlet valve to be pressurized.
2. The pressurizing device as recited in claim 1 , further comprising an air outlet end and an air outlet valve disposed on one end of the main body, and an air inlet end disposed on the other end of the main body.
3. The pressurizing device as recited in claim 2 , wherein the air inlet valve is opened when the piston element is driven to move towards the air inlet end, while the air inlet valve of the piston element is closed when the piston element is driven to move towards the air outlet end.
4. The pressurizing device as recited in claim 1 , wherein the two magnetic elements are simultaneously magnetized to have the same magnetic polarity, thereby forming an attractive force to one end of the piston element and a repulsive force to the other end of the piston element.
5. The pressurizing device as recited in claim 1 , wherein the fluid is air.
6. The pressurizing device as recited in claim 1 , wherein the fluid is liquid.
7. The pressurizing device as recited in claim 1 , further comprising a control circuit electrically connecting the two electromagnetic element to magnetize the electromagnetic elements and to change polarity thereof, the control circuit including:
a current switch circuit transforming an input current into alternating current; and
an oscillating circuit to generate a series of positive and negative current pulse cycles.
8. The pressurizing device as recited in claim 7 , wherein a frequency of the positive and negative current pulse cycles is adjusted by tuning a resistance and a capacitance of the control circuit, thereby controlling a pressurizing speed.
9. A linear oscillating pressurizing device, comprising:
a main body;
two magnetic elements disposed in the main body;
a piston element disposed between the two magnetic elements;
air inlet valve disposed on the piston element; and
a control circuit electrically connecting the two electromagnetic element to magnetize the electromagnetic elements and to change polarity thereof;
wherein the two magnetic elements are temporarily magnetized to drive the piston element.
10. The pressurizing device as recited in claim 9 , wherein the control circuit comprising:
a current switch circuit transforming an input current into alternating current; and
an oscillating circuit to generate a series of positive and negative current pulse cycles.
11. The pressurizing device as recited in claim 10 , wherein a frequency of the positive and negative current pulse cycles is adjusted by tuning a resistance and a capacitance of the control circuit, thereby controlling a pressurizing speed.
12. The pressurizing device as recited in claim 9 , wherein the two magnetic elements are simultaneously magnetized to have the same magnetic polarity, thereby forming an attractive force to one end of the piston element and a repulsive force to the other end of the piston element.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/957,585 US20060073039A1 (en) | 2004-10-05 | 2004-10-05 | Linear oscillating pressurizing device |
US12/128,899 US20080226477A1 (en) | 2004-10-05 | 2008-05-29 | Electromagnetic oscillating fluid pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/957,585 US20060073039A1 (en) | 2004-10-05 | 2004-10-05 | Linear oscillating pressurizing device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/128,899 Continuation-In-Part US20080226477A1 (en) | 2004-10-05 | 2008-05-29 | Electromagnetic oscillating fluid pump |
Publications (1)
Publication Number | Publication Date |
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US20060073039A1 true US20060073039A1 (en) | 2006-04-06 |
Family
ID=36125739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/957,585 Abandoned US20060073039A1 (en) | 2004-10-05 | 2004-10-05 | Linear oscillating pressurizing device |
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US (1) | US20060073039A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060200032A1 (en) * | 2005-03-04 | 2006-09-07 | Rossmax International Ltd. | Linear oscillation pressurization type electronic sphygmomanometer |
CN110017958A (en) * | 2019-04-01 | 2019-07-16 | 苏州东菱振动试验仪器有限公司 | A method of balance moves back and forth object centrifugal force |
CN110360082A (en) * | 2019-08-09 | 2019-10-22 | 深圳市安保科技有限公司 | A kind of turbine unit and its application method, turbine apparatus |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3162134A (en) * | 1961-11-24 | 1964-12-22 | Mark E Lovell | Electromagnetic pump and energizing means therefor |
US3384021A (en) * | 1966-08-29 | 1968-05-21 | Little Inc A | Electromagnetic reciprocating fluid pump |
US4583027A (en) * | 1982-12-27 | 1986-04-15 | Hitachi Metals International, Ltd. | Moving magnet linear motor |
US5501581A (en) * | 1992-12-15 | 1996-03-26 | Samsung Electronics Co., Ltd. | Magnetic fluid pump and a method for transporting fluid using the same |
-
2004
- 2004-10-05 US US10/957,585 patent/US20060073039A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3162134A (en) * | 1961-11-24 | 1964-12-22 | Mark E Lovell | Electromagnetic pump and energizing means therefor |
US3384021A (en) * | 1966-08-29 | 1968-05-21 | Little Inc A | Electromagnetic reciprocating fluid pump |
US4583027A (en) * | 1982-12-27 | 1986-04-15 | Hitachi Metals International, Ltd. | Moving magnet linear motor |
US5501581A (en) * | 1992-12-15 | 1996-03-26 | Samsung Electronics Co., Ltd. | Magnetic fluid pump and a method for transporting fluid using the same |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060200032A1 (en) * | 2005-03-04 | 2006-09-07 | Rossmax International Ltd. | Linear oscillation pressurization type electronic sphygmomanometer |
CN110017958A (en) * | 2019-04-01 | 2019-07-16 | 苏州东菱振动试验仪器有限公司 | A method of balance moves back and forth object centrifugal force |
CN110360082A (en) * | 2019-08-09 | 2019-10-22 | 深圳市安保科技有限公司 | A kind of turbine unit and its application method, turbine apparatus |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: ROSSMAX INTERNATIONAL LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WU, CHAU-CHUAN;WU, TOWER S.J.;REEL/FRAME:015874/0519 Effective date: 20040913 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |