US20020061251A1 - Windmill with multiple double-acting piston/cylinder compressor system and apparatus and method of mounting multiple windmill blades to enhance performance - Google Patents
Windmill with multiple double-acting piston/cylinder compressor system and apparatus and method of mounting multiple windmill blades to enhance performance Download PDFInfo
- Publication number
- US20020061251A1 US20020061251A1 US09/990,855 US99085501A US2002061251A1 US 20020061251 A1 US20020061251 A1 US 20020061251A1 US 99085501 A US99085501 A US 99085501A US 2002061251 A1 US2002061251 A1 US 2002061251A1
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- US
- United States
- Prior art keywords
- windmill
- piston
- shaft
- compressor apparatus
- blades
- 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
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/28—Wind motors characterised by the driven apparatus the apparatus being a pump or a compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/10—Combinations of wind motors with apparatus storing energy
- F03D9/17—Combinations of wind motors with apparatus storing energy storing energy in pressurised fluids
-
- 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
- F04B17/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Definitions
- This invention relates to improvements in windmill compressed air systems, and more particularly, to a multiple double acting piston/cylinder system actuated by a windmill, which additionally has multiple airfoils in a stack to enhance power output and lift.
- the larger diameter piston is used to quickly pump up the volume of the storage tank for the compressed air to a desired level. After that, the smaller diameter piston takes over.
- the larger diameter piston cuts off at lower air speeds, so that at least some useful work can be gained from the windmill turning and driving the smaller diameter piston.
- the improved airfoil arrangement comprises airfoils in combination which provide needed structural strength while causing windmill air flow enhancement which is greater than the sum of the individual air flows (under the same air flow conditions).
- windmill means mounted to a windmill shaft to rotate said shaft in response to air flow through said windmill means
- multiple double-acting piston/cylinder means each having a piston operating within a cylinder to compress air upon movement of the piston within the cylinder;
- each of said cylinders having a piston shaft connected to said piston therein; said piston shaft extending from said cylinder;
- drive means connecting said piston shafts to said windmill shaft to drive said piston shafts in response to rotation of said windmill shaft
- conduit means connected to the piston/cylinder means to permit the flow of air into said cylinders to receive compressed air from said cylinders.
- the cylinders are of different diameters.
- Pressure relief valves are disposed in discharge lines exiting said cylinders of different diameters.
- the pressure relief valve for the cylinder with the largest diameter is set to be actuated at a pressure which is less than the pressure relief valve for the cylinder with the smaller diameter.
- the drive means comprises a crank arm attached to the windmill shaft to rotate therewith; said crank arm having a portion thereof connected to the piston shafts to rotate said piston shafts, thereby withdrawing and inserting the shafts with respect to the cylinders to compress air.
- the crank arm has a portion thereof opposite to the end which is connected to the piston shafts, which portion acts as a counterbalance to the pistons.
- the windmill compressor apparatus as defined above may further comprise multiple pairs of windmill blades.
- the multiple pairs of blades are attached to multiple hubs on said windmill shaft.
- FIG. 1 is a rear view of a windmill system
- FIG. 2 is a side view of the windmill system shown in FIG. 1;
- FIG. 3 is a top view of a portion of the windmill system shown in FIG. 2.
- FIG. 10 show a windmill system apparatus which comprises a windmill designated generally 10 having a plurality of blades 12 mounted to a hubs 14 and 15 connected to a shaft 16 which is journaled in bearings 18 mounted on a horizontal beam 20 which is rigidly connected to a vertical tube 22 and a base 24 supporting the entire structure.
- FIG. 2 shows a side view of a plurality of air foils or blades 12 positioned with respect to one another.
- the blades are shown as being predominantly flat, of uniform crosssection and having a lip at the down wind edge (as shown in my prior U.S. patents for air foils and windmill structures such as U.S. Pat. No. 6,132,181, issued Oct. 17, 2000).
- the blades are positioned with respect to one another such that the center of the central portion of one blade is spaced approximately 50% of the blade cord length from the center to the center of the central portion of the other blade.
- FIG. 2 shows the mounting at the ends of the blades to the hub plates 14 and 15 .
- additional braces 17 and 19 may be provided for the purposes of stiffening.
- a plurality of such blade arrangements are provided spaced radially from one another.
- the outboard end of the shaft 16 is connected for rotation to a crank arm 28 .
- One end 29 of the crank arm 28 is “T” shaped and is used to counterbalance the stroke of the pistons in the piston/cylinders 42 , 44 .
- the other end 30 of the crank arm has a shaft 32 extending therefrom which supports bearings 34 and 36 . Mounting means disposed about these bearings support and are connected respectively to the piston shafts 38 and 40 of the dual acting piston/cylinders 42 and 44 , respectively.
- the other ends of the air cylinders are mounted to be pivoted on bases 46 and 48 , respectively.
- each cylinder Since there are check valves at each end of the cylinders, each cylinder is double acting in that on the withdrawal stroke of the piston shafts 38 , 40 , compressed air is forced out of the upper end of the cylinders of the piston/cylinders 42 , 44 in FIG. 3; and on the down stroke, compressed air is forced out of the lower end of the cylinders.
- check valves 50 , 52 , FIG. 2 at both ends to keep the air from flowing back in once it has been exhausted from the cylinder.
- check valves 54 , 56 , FIG. 2 at the air intake to keep the air from flowing out once it has been drawn into the cylinder.
- the pressure relief valves 57 , 59 are set at predetermined pressures.
- relief valve 57 might be set at 55 or 60 pounds per square inch.
- pressure relief valve 59 might be set at approximately 86 pounds per square inch pressure.
- the valve 57 simply exhausts its compressed air. Therefore, the windmill does not have to push against the combined forces of the bigger and smaller piston/cylinders. Once that pressure is reached, the smaller piston/cylinder nevertheless keeps working and keeps compressing air up to its limit of approximately 86 pounds.
- the smaller cylinder is designed to work with winds of approximately 6 to 10 mph. Once the volume is reached in the tank 62 and the lower pressure limit is reached, the bigger diameter cylinder drops out of the production of compressed air, so that at least something is gained from the windmill system. Otherwise, the windmill would stall because it cannot drive both pistons at low speeds. Thus, this arrangement extends the range of useful work that the windmill can perform.
- both cylinders pump compressed air into the storage tank as pressure in the tank climbs to the preset pressure of the larger cylinder.
Abstract
A windmill compressor apparatus has multiple double acting piston/cylinders actuated by the windmill. The windmill additionally has multiple pairs of blades to enhance power output and lift.
Description
- This application is a Continuation-in-Part of two of my prior applications, namely WINDMILL WITH TWO PISTON COMPRESSOR SYSTEM, Serial No. 60/252,772, filed Nov. 22,2000; and APPARATUS AND METHOD OF MOUNTING MULTIPLE BLADES TO ENHANCE PERFORMANCE, Serial No. 60/252,812, filed Nov. 22,2000; the disclosures of which are incorporated herein by reference as if fully set forth.
- 1. Technical Field
- This invention relates to improvements in windmill compressed air systems, and more particularly, to a multiple double acting piston/cylinder system actuated by a windmill, which additionally has multiple airfoils in a stack to enhance power output and lift.
- 2. Background Art
- In the prior art, it was known to use windmills to compress and store compressed air. Such a system is shown in my prior art U.S. Pat. No. 6,132,181, issued Oct. 17, 2000, which discloses windmill structures and systems. Therein I disclose a number of ways of attaching the rotating shaft of a windmill to various mechanical means and compressors.
- One of the problems that I have noted in my work with windmills is that there may be periods when the wind is either very slow or very fast for a sustained period of time. This can affect the usefulness of the windmill system in compressing and storing compressed air.
- Further, in the prior art, it has been known to mount air foils in stacks, such as the wing5 arrangement in bi-planes and tri-planes. I have discovered that the performance of such arrangements may be enhanced depending on the mounting and relative positioning of the air foils.
- Summary of the Invention
- I have invented a windmill compressed air system which utilizes two double acting pistons and cylinders. These are most preferably of different volume, but have the same stroke length. They have pressure control valves to provide for alternative choices depending on wind availability. The larger diameter piston is used to quickly pump up the volume of the storage tank for the compressed air to a desired level. After that, the smaller diameter piston takes over.
- The larger diameter piston cuts off at lower air speeds, so that at least some useful work can be gained from the windmill turning and driving the smaller diameter piston.
- Further, the improved airfoil arrangement comprises airfoils in combination which provide needed structural strength while causing windmill air flow enhancement which is greater than the sum of the individual air flows (under the same air flow conditions).
- I have invented a windmill compressor apparatus comprising:
- windmill means mounted to a windmill shaft to rotate said shaft in response to air flow through said windmill means;
- multiple double-acting piston/cylinder means each having a piston operating within a cylinder to compress air upon movement of the piston within the cylinder;
- each of said cylinders having a piston shaft connected to said piston therein; said piston shaft extending from said cylinder;
- drive means connecting said piston shafts to said windmill shaft to drive said piston shafts in response to rotation of said windmill shaft; and
- conduit means connected to the piston/cylinder means to permit the flow of air into said cylinders to receive compressed air from said cylinders.
- I have further invented a windmill compressor apparatus in which I position the multiple double-acting piston/cylinder means such that the cylinders are radially space from one another.
- Most preferably, the cylinders are of different diameters. Pressure relief valves are disposed in discharge lines exiting said cylinders of different diameters. The pressure relief valve for the cylinder with the largest diameter is set to be actuated at a pressure which is less than the pressure relief valve for the cylinder with the smaller diameter.
- The drive means comprises a crank arm attached to the windmill shaft to rotate therewith; said crank arm having a portion thereof connected to the piston shafts to rotate said piston shafts, thereby withdrawing and inserting the shafts with respect to the cylinders to compress air. The crank arm has a portion thereof opposite to the end which is connected to the piston shafts, which portion acts as a counterbalance to the pistons.
- The windmill compressor apparatus as defined above may further comprise multiple pairs of windmill blades. The multiple pairs of blades are attached to multiple hubs on said windmill shaft.
- The blades in each pair of windmill blades are interconnected with braces.
- FIG. 1 is a rear view of a windmill system;
- FIG. 2 is a side view of the windmill system shown in FIG. 1; and
- FIG. 3 is a top view of a portion of the windmill system shown in FIG. 2.
- Referring to the Figures, they show a windmill system apparatus which comprises a windmill designated generally10 having a plurality of
blades 12 mounted to ahubs shaft 16 which is journaled inbearings 18 mounted on ahorizontal beam 20 which is rigidly connected to avertical tube 22 and abase 24 supporting the entire structure. - Referring to FIG. 2, this shows a side view of a plurality of air foils or
blades 12 positioned with respect to one another. The blades are shown as being predominantly flat, of uniform crosssection and having a lip at the down wind edge (as shown in my prior U.S. patents for air foils and windmill structures such as U.S. Pat. No. 6,132,181, issued Oct. 17, 2000). The blades are positioned with respect to one another such that the center of the central portion of one blade is spaced approximately 50% of the blade cord length from the center to the center of the central portion of the other blade. - I discovered that this arrangement provides for more air flow deflected in a downward direction.
- FIG. 2 shows the mounting at the ends of the blades to the
hub plates additional braces - A plurality of such blade arrangements are provided spaced radially from one another.
- The outboard end of the
shaft 16 is connected for rotation to acrank arm 28. Oneend 29 of thecrank arm 28 is “T” shaped and is used to counterbalance the stroke of the pistons in the piston/cylinders other end 30 of the crank arm has ashaft 32 extending therefrom which supportsbearings piston shafts cylinders bases - In operation, as the windmill rotates, it turns the
shaft 16 which, in turn, rotates thecrank arm 28. Since theshafts shaft 32, as the crank arm rotates, it drives the pistons in and out of their respective cylinders. One of these cylinders of the piston/cylinder 44 is of a greater diameter than the other, 42. Both of the cylinders are double acting and both have the same stroke length on rotation of the crank arm. However, they are spaced radially so as to sequence top and bottom dead center points (by approximately 30 degrees), thereby distributing the loading over a longer duration of rotation and reducing the maximum force needed for a given pounds per square inch/cubic feet per minute rate. - Referring to the Figures, they show the air exchange system using these two piston/cylinders.
- Since there are check valves at each end of the cylinders, each cylinder is double acting in that on the withdrawal stroke of the
piston shafts cylinders check valves check valves adjustment relief valves check valves 58; to keep air from flowing back into the system. Downstream from thatvalve 58, there is a hose or piping 60 to the compressedair reservoir tank 62. The same piping system is provided for both cylinders. - System Operation
- In operation, the
pressure relief valves bigger diameter cylinder 44;relief valve 57 might be set at 55 or 60 pounds per square inch. For the smaller diameter cylinder,pressure relief valve 59 might be set at approximately 86 pounds per square inch pressure. Thus, after the pressure reaches 55 psi, thevalve 57 simply exhausts its compressed air. Therefore, the windmill does not have to push against the combined forces of the bigger and smaller piston/cylinders. Once that pressure is reached, the smaller piston/cylinder nevertheless keeps working and keeps compressing air up to its limit of approximately 86 pounds. - The smaller cylinder is designed to work with winds of approximately 6 to 10 mph. Once the volume is reached in the
tank 62 and the lower pressure limit is reached, the bigger diameter cylinder drops out of the production of compressed air, so that at least something is gained from the windmill system. Otherwise, the windmill would stall because it cannot drive both pistons at low speeds. Thus, this arrangement extends the range of useful work that the windmill can perform. - Note that when no pressure is in the
tank 62 and the windmill first starts up, both cylinders pump compressed air into the storage tank as pressure in the tank climbs to the preset pressure of the larger cylinder.
Claims (13)
1. A windmill compressor apparatus comprising:
windmill means mounted to a windmill shaft to rotate said shaft in response to air flow through said windmill means;
multiple double-acting piston/cylinder means each having a piston operating within a cylinder to compress air upon movement of the piston within the cylinder;
each of said cylinders having a piston shaft connected to said piston therein; said piston shaft extending from said cylinder;
drive means connecting said piston shafts to said windmill shaft to drive said piston shafts in response to rotation of said windmill shaft; and
conduit means connected to the piston/cylinder means to permit the flow of air into said cylinders to receive compressed air from said cylinders.
2. The windmill compressor apparatus of claim 1 further comprising positioning the multiple double-acting piston/cylinder means such that the cylinders are radially space from one another.
3. A windmill compressor apparatus as set forth in claim 1 wherein said cylinders are of different diameters.
4. The windmill compressor apparatus of claim 3 wherein pressure relief valves are disposed in discharge lines exiting said cylinders of different diameters.
5. The windmill compressor apparatus of claim 4 wherein the pressure relief valve for the cylinder with the largest diameter is set to be actuated at a pressure which is less than the pressure relief valve for the cylinder with the smaller diameter.
6. The windmill compressor apparatus of claim 1 wherein the drive means comprises a crank arm attached to the windmill shaft to rotate therewith; said crank arm having a portion thereof connected to the piston shafts to rotate said piston shafts, thereby withdrawing and inserting the shafts with respect to the cylinders to compress air.
7. The windmill compressor apparatus of claim 1 wherein the crank arm has a portion thereof opposite to the end which is connected to the piston shafts, which portion acts as a counterbalance to the pistons.
8. The windmill compressor apparatus as in claim 1 further comprising multiple pairs of windmill blades.
9. The windmill compressor apparatus of claim 8 wherein the multiple pairs of blades are attached to multiple hubs on said windmill shaft.
10. The windmill compressor apparatus of claim 9 wherein the blades in each pair of windmill blades are interconnected with braces.
11. A windmill compressor apparatus comprising:
windmill means mounted to a windmill shaft to rotate said shaft in response to air flow through said windmill means; the windmill further comprising multiple pairs of windmill blades.
12. The windmill compressor apparatus of claim 11 wherein the multiple pairs of blades are attached to multiple hubs on said windmill shaft.
13. The windmill compressor apparatus of claim 11 wherein the blades of each pair of windmill blades are interconnected with braces.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/990,855 US20020061251A1 (en) | 2000-11-22 | 2001-11-21 | Windmill with multiple double-acting piston/cylinder compressor system and apparatus and method of mounting multiple windmill blades to enhance performance |
US10/026,334 US20020061252A1 (en) | 2000-11-22 | 2001-12-21 | Air propulsion apparatus with windmill having multiple windmill blades to enhance performance |
US10/783,800 US7267530B2 (en) | 2000-11-22 | 2004-02-21 | Windmill apparatuses and methods of mounting blades to enhance their performance |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25277200P | 2000-11-22 | 2000-11-22 | |
US25281200P | 2000-11-22 | 2000-11-22 | |
US09/990,855 US20020061251A1 (en) | 2000-11-22 | 2001-11-21 | Windmill with multiple double-acting piston/cylinder compressor system and apparatus and method of mounting multiple windmill blades to enhance performance |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/026,334 Continuation-In-Part US20020061252A1 (en) | 2000-11-22 | 2001-12-21 | Air propulsion apparatus with windmill having multiple windmill blades to enhance performance |
US10/783,800 Continuation-In-Part US7267530B2 (en) | 2000-11-22 | 2004-02-21 | Windmill apparatuses and methods of mounting blades to enhance their performance |
Publications (1)
Publication Number | Publication Date |
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US20020061251A1 true US20020061251A1 (en) | 2002-05-23 |
Family
ID=27400605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/990,855 Abandoned US20020061251A1 (en) | 2000-11-22 | 2001-11-21 | Windmill with multiple double-acting piston/cylinder compressor system and apparatus and method of mounting multiple windmill blades to enhance performance |
Country Status (1)
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US (1) | US20020061251A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060150629A1 (en) * | 2003-12-22 | 2006-07-13 | Eric Ingersoll | Use of intersecting vane machines in combination with wind turbines |
US7719127B2 (en) | 2004-06-15 | 2010-05-18 | Hamilton Sundstrand | Wind power system for energy production |
US7721641B2 (en) | 2004-05-21 | 2010-05-25 | Us Airflow | Air compression apparatus and method of use |
US20110044828A1 (en) * | 2006-11-08 | 2011-02-24 | Lund Morten A | Compression apparatus |
US8186976B2 (en) | 2006-11-08 | 2012-05-29 | Us Airflow | Combination compressor and vacuum pump apparatus and method of use |
CN102606435A (en) * | 2012-03-30 | 2012-07-25 | 三一电气有限责任公司 | Wind generating set and hydraulic pump aggregate thereof |
US20170122299A1 (en) * | 2015-11-03 | 2017-05-04 | Korea Institute Of Ocean Science & Technology (Kiost) | Multiple oscillating water pumping device |
US20180334894A1 (en) * | 2017-05-19 | 2018-11-22 | Juan Carlos Marie ARLANDIS | Gas pumping unit for oil wells |
US11149762B2 (en) | 2018-10-21 | 2021-10-19 | Chaoneng HUANG | Pistonless double-acting cylinder apparatus cross-reference to related applications |
US11415140B2 (en) | 2017-05-19 | 2022-08-16 | Hoerbiger Service Inc. | Gas compressor unit for oil wells |
-
2001
- 2001-11-21 US US09/990,855 patent/US20020061251A1/en not_active Abandoned
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060150629A1 (en) * | 2003-12-22 | 2006-07-13 | Eric Ingersoll | Use of intersecting vane machines in combination with wind turbines |
US7721641B2 (en) | 2004-05-21 | 2010-05-25 | Us Airflow | Air compression apparatus and method of use |
US7719127B2 (en) | 2004-06-15 | 2010-05-18 | Hamilton Sundstrand | Wind power system for energy production |
US20100187831A1 (en) * | 2004-06-15 | 2010-07-29 | Fabio Paolo Bertolotti | Wind power system for energy production |
US8324750B2 (en) | 2004-06-15 | 2012-12-04 | Hamilton Sundstrand Corporation | Wind power system for energy production |
US8657588B2 (en) | 2006-11-08 | 2014-02-25 | Us Airflow | Compression apparatus |
US20110044828A1 (en) * | 2006-11-08 | 2011-02-24 | Lund Morten A | Compression apparatus |
US8186976B2 (en) | 2006-11-08 | 2012-05-29 | Us Airflow | Combination compressor and vacuum pump apparatus and method of use |
CN102606435A (en) * | 2012-03-30 | 2012-07-25 | 三一电气有限责任公司 | Wind generating set and hydraulic pump aggregate thereof |
US20170122299A1 (en) * | 2015-11-03 | 2017-05-04 | Korea Institute Of Ocean Science & Technology (Kiost) | Multiple oscillating water pumping device |
US10605237B2 (en) * | 2015-11-03 | 2020-03-31 | Korea Institute Of Ocean Science & Technology (Kiost) | Multiple oscillating water pumping device |
US20180334894A1 (en) * | 2017-05-19 | 2018-11-22 | Juan Carlos Marie ARLANDIS | Gas pumping unit for oil wells |
US11415140B2 (en) | 2017-05-19 | 2022-08-16 | Hoerbiger Service Inc. | Gas compressor unit for oil wells |
US11149762B2 (en) | 2018-10-21 | 2021-10-19 | Chaoneng HUANG | Pistonless double-acting cylinder apparatus cross-reference to related applications |
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Legal Events
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |