US20120134829A1 - Fluid Turbine Featuring Dynamically Phase-Adjustable Cam - Google Patents
Fluid Turbine Featuring Dynamically Phase-Adjustable Cam Download PDFInfo
- Publication number
- US20120134829A1 US20120134829A1 US12/954,893 US95489310A US2012134829A1 US 20120134829 A1 US20120134829 A1 US 20120134829A1 US 95489310 A US95489310 A US 95489310A US 2012134829 A1 US2012134829 A1 US 2012134829A1
- Authority
- US
- United States
- Prior art keywords
- axis
- fluid turbine
- pitch angle
- rotor
- pitch
- 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
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 39
- 238000003491 array Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
Images
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
- F03D7/00—Controlling wind motors
- F03D7/06—Controlling wind motors the wind motors having rotation axis substantially perpendicular 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
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
- F03D3/066—Rotors characterised by their construction elements the wind engaging parts being movable relative to the rotor
- F03D3/067—Cyclic movements
- F03D3/068—Cyclic movements mechanically controlled by the rotor structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
-
- 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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Definitions
- the present disclosure relates to a fluid turbine comprising a rotor and a phase-adjustable mechanism.
- the rotor has an axis of rotation, and comprises at least two rotor blades disposed at a radius from the axis of rotation, each rotor blade having a pitch axis and a variable pitch angle.
- the phase-adjustable mechanism is operable to control the pitch angle of at least one rotor blade about its pitch axis and to vary the pitch angle of the rotor blade from a first pitch angle at a first circumferential location about the axis of rotation to a second pitch angle at a second circumferential location about the axis of rotation.
- the present disclosure relates to a fluid turbine comprising a rotor and a pitch angle control mechanism.
- the rotor has an axis of rotation, and comprises at least two rotor blades disposed at a radius from the axis of rotation, each rotor blade having a first end, a second end, a first mounting point, a second mounting point, a pitch axis and a variable pitch angle, each of the first and second mounting points being disposed inboard of the first and second ends.
- the pitch angle control mechanism is operable to control the pitch angle of at least one rotor blade about its pitch axis and to vary the pitch angle of the rotor blade from a first pitch angle at a first circumferential location about the axis of rotation to a second pitch angle at a second circumferential location about the axis of rotation.
- the present disclosure relates to a fluid turbine comprising a rotor and a pitch angle control mechanism.
- the rotor has an axis of rotation and comprises a first hub, a second hub, an array of at least two struts, having strut covers disposed thereabout, extending from each of the first and second hubs, and at least two rotor blades, each secured to the distal end of a strut and having a pitch axis and a variable pitch angle.
- the mechanism is operable to control the pitch angle of at least one rotor blade about its pitch axis and to vary the pitch angle of the rotor blade from a first pitch angle at a first circumferential location about the axis of rotation to a second pitch angle at a second circumferential location about the axis of rotation.
- FIG. 1 is an isometric view of a fluid turbine according to certain embodiments of the present disclosure
- FIG. 2 is an end view of the fluid turbine according to certain embodiments of the present disclosure
- FIG. 3 is an isomeric detail view of the hub at the first end of the fluid turbine according to certain embodiments of the present disclosure
- FIG. 4 is an end view of one embodiment of a cam clocking mechanism disposed in the hub at the first end of the fluid turbine;
- FIG. 5 is an isometric view of a second embodiment of a cam clocking mechanism
- FIG. 6 is a front view of the cam clocking mechanism of FIG. 5 ;
- FIG. 7 is a section view of the cam clocking mechanism of FIGS. 5 and 6 ;
- FIG. 8 is a back view of the cam clocking mechanism of FIGS. 5-7 ;
- FIG. 9 is a side view of the cam clocking mechanism of FIGS. 5-8 ;
- FIG. 10 is an exploded view of the cam clocking mechanism of FIGS. 5-9 .
- FIG. 1 is an isometric view of a fluid turbine 100 according to certain embodiments of the present disclosure.
- FIG. 2 is an end view of the fluid turbine according to certain embodiments of the present disclosure.
- turbine 100 consists of a rotor assembly comprising a torque tube 102 .
- Torque tube 102 is designed to prevent rotor hubs 108 from rotating independently of one another.
- Torque tube 102 is oriented along a central axis which is intended to be disposed generally perpendicular to the direction of fluid flow.
- the turbine 100 comprises arrays of radially-disposed struts 104 , each mounted to one of rotor hubs 108 at its proximal end and a rotor blade 106 at its distal end. Braces 110 between the struts provide additional structural integrity.
- the rotor blades 106 shown in FIG. 1 are high aspect ratio airfoils/hydrofoils having a clearly defined leading and trailing edge.
- Turbine 100 shown in FIG. 1 comprises 10 blades, but alternate embodiments may have more or fewer blades, depending on the application.
- the rotor blades 106 are pivotably attached to the struts 104 in such a manner as to allow the rotor blades 106 to be individually pivoted with respect to the axis of rotation of turbine 100 , thus altering the pitch angle of each rotor blade 106 with respect to the direction of fluid flow through turbine 100 .
- the angle of the rotor blades may be controlled via mechanical linkages, hydraulics, pneumatics, linear or rotary electromechanical actuators, or any combination thereof.
- the rotor pitch angle profile may be controlled by a cam-and-follower mechanism operating in concert with one or more of the above systems of actuation, as set forth in further detail below.
- FIG. 3 is an isometric view of a rotor hub 108 having a portion of its cover 200 removed to reveal a cam mechanism disposed therein.
- Hub 108 revolves about axle 202 as the rotor revolves about its axis of rotation.
- Cam 204 remains mostly stationary inside hub 108 as the rotor revolves around it.
- a set of rocker assemblies 206 pivotally secured to hub 108 , ride on the outer surface of cam 204 as the hub 108 revolves.
- Each rocker assembly 206 is connected to an actuation rod 208 and at least one spring 210 secured to a strut 104 at one end and the actuation rod 208 at the other.
- the springs 210 hold the cam followers securely against the outer surface of the cam 204 .
- Each actuation rod 208 runs parallel to the strut 104 for a rotor blade 106 , within a lengthwise aperture in the strut cover 212 .
- Each actuation rod 208 is secured to a rocker assembly 206 at its proximal end and to a rotor blade at its distal end.
- Each actuation rod 208 controls the pitch of a particular rotor blade according to the position of a particular rocker assembly 206 , which is, in turn, controlled by the profile of the outer surface of the cam 204 at the point of contact between the cam 204 and the cam follower of the rocker assembly 206 .
- a rotor blade at a given radial location will be articulated to a given blade pitch.
- As a rotor blade moves about the axis of rotation of the rotor it will be articulated according to the pattern of the cam.
- a clocking motor 222 actuates a clocking mechanism 220 secured to the cam 204 .
- the clocking mechanism is operable to vary the phase relationship between the cam 204 and the rotor blades 106 by advancing or retarding the angular position of the cam 204 with respect to the angular position of the rotor blades 106 .
- the structure of the clocking mechanism is set forth in further detail below.
- FIG. 4 is an end detail view of clocking mechanism 220 .
- clocking mechanism 220 comprises a clocking motor 222 secured to a worm gear mechanism 230 .
- Clocking motor 222 comprises a rotor-stator assembly 224 and a gearhead 226 , though in different embodiments, the gearhead 226 may or may not be included.
- Clocking motor 222 is secured to worm gear assembly 230 by motor mount 228 .
- the helical worm teeth 234 of worm gear 232 mesh with the helical gear teeth 236 of gear 238 .
- the helical worm teeth 234 exert pressure on the helical gear teeth 236 , thus imparting a torque on gear 238 , which is secured to cam 204 .
- the clocking motor 222 is able to vary the angle of cam 204 , and thereby vary the phase of the cam profile with respect to the rotor blades in order to optimize the blade pitch profile to match the prevailing conditions, which may include fluid velocity, fluid flow direction, fluid turbulence and fluid density, as examples.
- FIGS. 5-10 depict various aspects of a second embodiment of a cam clocking mechanism, designated 300 .
- FIG. 5 is an isometric view of mechanism 300 .
- FIG. 6 is a front view of cam clocking mechanism 300 of FIG. 5 .
- FIG. 7 is a section view of cam clocking mechanism 300 of FIGS. 5 and 6 .
- FIG. 8 is a back view of cam clocking mechanism 300 of FIGS. 5-7 .
- FIG. 9 is a side view of cam clocking mechanism 300 of FIGS. 5-8 .
- FIG. 10 is an exploded view of cam clocking mechanism 300 of FIGS. 5-9 .
- cam clocking mechanism 300 comprises a cam mounting plate 302 to which is secured a cam 306 , a cam bumper plate 304 , an encoder wheel 308 , a driven gear 310 and a mounting ring 316 .
- a driving gear 312 secured to a cam clocking motor 314 , is meshed to the driven gear 310 .
- the orientation and speed of the cam clocking mechanism can be controlled using the cam clocking motor 314 , in a manner well known to those of skill in the art.
- cam clocking motor 314 may be selectively engageable and disengageable from driven gear 310 . This may be effectuated by a mechanism operable to engage and disengage driving gear 312 to driven gear 310 . Alternately, this may be effectuated by a mechanism operable to engage and disengage cam clocking motor 314 to driving gear 312 .
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Hydraulic Turbines (AREA)
Abstract
Description
- According to a first aspect, the present disclosure relates to a fluid turbine comprising a rotor and a phase-adjustable mechanism. The rotor has an axis of rotation, and comprises at least two rotor blades disposed at a radius from the axis of rotation, each rotor blade having a pitch axis and a variable pitch angle. The phase-adjustable mechanism is operable to control the pitch angle of at least one rotor blade about its pitch axis and to vary the pitch angle of the rotor blade from a first pitch angle at a first circumferential location about the axis of rotation to a second pitch angle at a second circumferential location about the axis of rotation.
- According to a second aspect, the present disclosure relates to a fluid turbine comprising a rotor and a pitch angle control mechanism. The rotor has an axis of rotation, and comprises at least two rotor blades disposed at a radius from the axis of rotation, each rotor blade having a first end, a second end, a first mounting point, a second mounting point, a pitch axis and a variable pitch angle, each of the first and second mounting points being disposed inboard of the first and second ends. The pitch angle control mechanism is operable to control the pitch angle of at least one rotor blade about its pitch axis and to vary the pitch angle of the rotor blade from a first pitch angle at a first circumferential location about the axis of rotation to a second pitch angle at a second circumferential location about the axis of rotation.
- According to a third aspect, the present disclosure relates to a fluid turbine comprising a rotor and a pitch angle control mechanism. The rotor has an axis of rotation and comprises a first hub, a second hub, an array of at least two struts, having strut covers disposed thereabout, extending from each of the first and second hubs, and at least two rotor blades, each secured to the distal end of a strut and having a pitch axis and a variable pitch angle. The mechanism is operable to control the pitch angle of at least one rotor blade about its pitch axis and to vary the pitch angle of the rotor blade from a first pitch angle at a first circumferential location about the axis of rotation to a second pitch angle at a second circumferential location about the axis of rotation.
-
FIG. 1 is an isometric view of a fluid turbine according to certain embodiments of the present disclosure; -
FIG. 2 is an end view of the fluid turbine according to certain embodiments of the present disclosure; -
FIG. 3 is an isomeric detail view of the hub at the first end of the fluid turbine according to certain embodiments of the present disclosure; -
FIG. 4 is an end view of one embodiment of a cam clocking mechanism disposed in the hub at the first end of the fluid turbine; -
FIG. 5 is an isometric view of a second embodiment of a cam clocking mechanism; -
FIG. 6 is a front view of the cam clocking mechanism ofFIG. 5 ; -
FIG. 7 is a section view of the cam clocking mechanism ofFIGS. 5 and 6 ; -
FIG. 8 is a back view of the cam clocking mechanism ofFIGS. 5-7 ; -
FIG. 9 is a side view of the cam clocking mechanism ofFIGS. 5-8 ; and -
FIG. 10 is an exploded view of the cam clocking mechanism ofFIGS. 5-9 . - A system and method of the present patent application will now be described with reference to various examples of how the embodiments can best be made and used. Like reference numerals are used throughout the description and several views of the drawings to indicate like or corresponding parts, wherein the various elements are not necessarily drawn to scale.
-
FIG. 1 is an isometric view of afluid turbine 100 according to certain embodiments of the present disclosure.FIG. 2 is an end view of the fluid turbine according to certain embodiments of the present disclosure. - Structurally,
turbine 100 consists of a rotor assembly comprising atorque tube 102. Torquetube 102 is designed to preventrotor hubs 108 from rotating independently of one another.Torque tube 102 is oriented along a central axis which is intended to be disposed generally perpendicular to the direction of fluid flow. Theturbine 100 comprises arrays of radially-disposedstruts 104, each mounted to one ofrotor hubs 108 at its proximal end and arotor blade 106 at its distal end.Braces 110 between the struts provide additional structural integrity. Therotor blades 106 shown inFIG. 1 are high aspect ratio airfoils/hydrofoils having a clearly defined leading and trailing edge.Turbine 100 shown inFIG. 1 comprises 10 blades, but alternate embodiments may have more or fewer blades, depending on the application. - The
rotor blades 106 are pivotably attached to thestruts 104 in such a manner as to allow therotor blades 106 to be individually pivoted with respect to the axis of rotation ofturbine 100, thus altering the pitch angle of eachrotor blade 106 with respect to the direction of fluid flow throughturbine 100. The angle of the rotor blades may be controlled via mechanical linkages, hydraulics, pneumatics, linear or rotary electromechanical actuators, or any combination thereof. In certain embodiments, the rotor pitch angle profile may be controlled by a cam-and-follower mechanism operating in concert with one or more of the above systems of actuation, as set forth in further detail below. -
FIG. 3 is an isometric view of arotor hub 108 having a portion of itscover 200 removed to reveal a cam mechanism disposed therein.Hub 108 revolves aboutaxle 202 as the rotor revolves about its axis of rotation. Cam 204 remains mostly stationary insidehub 108 as the rotor revolves around it. A set of rocker assemblies 206, pivotally secured tohub 108, ride on the outer surface ofcam 204 as thehub 108 revolves. Eachrocker assembly 206 is connected to anactuation rod 208 and at least onespring 210 secured to astrut 104 at one end and theactuation rod 208 at the other. Thesprings 210 hold the cam followers securely against the outer surface of thecam 204. Eachactuation rod 208 runs parallel to thestrut 104 for arotor blade 106, within a lengthwise aperture in thestrut cover 212. - Each
actuation rod 208 is secured to arocker assembly 206 at its proximal end and to a rotor blade at its distal end. Eachactuation rod 208 controls the pitch of a particular rotor blade according to the position of aparticular rocker assembly 206, which is, in turn, controlled by the profile of the outer surface of thecam 204 at the point of contact between thecam 204 and the cam follower of therocker assembly 206. Thus, a rotor blade at a given radial location will be articulated to a given blade pitch. As a rotor blade moves about the axis of rotation of the rotor, it will be articulated according to the pattern of the cam. - A clocking
motor 222 actuates aclocking mechanism 220 secured to thecam 204. The clocking mechanism is operable to vary the phase relationship between thecam 204 and therotor blades 106 by advancing or retarding the angular position of thecam 204 with respect to the angular position of therotor blades 106. The structure of the clocking mechanism is set forth in further detail below. -
FIG. 4 is an end detail view ofclocking mechanism 220. As seen above,clocking mechanism 220 comprises a clockingmotor 222 secured to aworm gear mechanism 230. Clockingmotor 222 comprises a rotor-stator assembly 224 and agearhead 226, though in different embodiments, thegearhead 226 may or may not be included. Clockingmotor 222 is secured toworm gear assembly 230 bymotor mount 228. - Within
worm gear assembly 230, thehelical worm teeth 234 ofworm gear 232 mesh with thehelical gear teeth 236 ofgear 238. As theworm gear 232 rotates, thehelical worm teeth 234 exert pressure on thehelical gear teeth 236, thus imparting a torque ongear 238, which is secured to cam 204. Through the use ofclocking mechanism 220, the clockingmotor 222 is able to vary the angle ofcam 204, and thereby vary the phase of the cam profile with respect to the rotor blades in order to optimize the blade pitch profile to match the prevailing conditions, which may include fluid velocity, fluid flow direction, fluid turbulence and fluid density, as examples. -
FIGS. 5-10 depict various aspects of a second embodiment of a cam clocking mechanism, designated 300.FIG. 5 is an isometric view ofmechanism 300.FIG. 6 is a front view ofcam clocking mechanism 300 ofFIG. 5 .FIG. 7 is a section view ofcam clocking mechanism 300 ofFIGS. 5 and 6 .FIG. 8 is a back view ofcam clocking mechanism 300 ofFIGS. 5-7 .FIG. 9 is a side view ofcam clocking mechanism 300 ofFIGS. 5-8 .FIG. 10 is an exploded view ofcam clocking mechanism 300 ofFIGS. 5-9 . - As seen in
FIGS. 5-10 ,cam clocking mechanism 300 comprises acam mounting plate 302 to which is secured acam 306, acam bumper plate 304, anencoder wheel 308, a drivengear 310 and amounting ring 316. Adriving gear 312, secured to acam clocking motor 314, is meshed to the drivengear 310. The orientation and speed of the cam clocking mechanism can be controlled using thecam clocking motor 314, in a manner well known to those of skill in the art. According to certain embodiments of the present invention,cam clocking motor 314 may be selectively engageable and disengageable from drivengear 310. This may be effectuated by a mechanism operable to engage and disengage drivinggear 312 to drivengear 310. Alternately, this may be effectuated by a mechanism operable to engage and disengagecam clocking motor 314 to drivinggear 312. - It is believed that the operation and construction of the embodiments of the present patent application will be apparent from the detailed description set forth above. While the exemplary embodiments shown and described may have been characterized as preferred, it should be readily understood that various changes and modifications could be made therein without departing from the scope of the present invention as set forth herein.
Claims (20)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/954,893 US20120134829A1 (en) | 2010-11-28 | 2010-11-28 | Fluid Turbine Featuring Dynamically Phase-Adjustable Cam |
PCT/US2011/062259 WO2012071587A1 (en) | 2010-11-28 | 2011-11-28 | Fluid turbine featuring dynamically phase-adjustable cam |
US14/070,474 US20150125298A1 (en) | 2010-11-28 | 2013-11-01 | Fluid turbine for power generation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/954,893 US20120134829A1 (en) | 2010-11-28 | 2010-11-28 | Fluid Turbine Featuring Dynamically Phase-Adjustable Cam |
Publications (1)
Publication Number | Publication Date |
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US20120134829A1 true US20120134829A1 (en) | 2012-05-31 |
Family
ID=46126795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/954,893 Abandoned US20120134829A1 (en) | 2010-11-28 | 2010-11-28 | Fluid Turbine Featuring Dynamically Phase-Adjustable Cam |
Country Status (2)
Country | Link |
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US (1) | US20120134829A1 (en) |
WO (1) | WO2012071587A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100322769A1 (en) * | 2008-02-25 | 2010-12-23 | Thomas Glenn Stephens | Fluid turbine optimized for power generation |
US20110110779A1 (en) * | 2009-11-06 | 2011-05-12 | Thomas Glenn Stephens | Fluid turbine featuring articulated blades and phase-adjusted cam |
US20120055137A1 (en) * | 2009-02-27 | 2012-03-08 | Snecma | Fan blades with cyclic setting |
CN104929690A (en) * | 2014-05-13 | 2015-09-23 | 从宏锦 | Fluid engine |
FR3018868A1 (en) * | 2014-03-18 | 2015-09-25 | Patrick Claude Michel Bouquerel | VERTICAL WINDING DEVICE WITH VARIABLE GEOMETRY |
WO2015197878A1 (en) * | 2014-06-25 | 2015-12-30 | Renewable Innovative Sustainable Power, S.L. | Vertical axis wind turbine |
US11085417B2 (en) * | 2019-12-19 | 2021-08-10 | SJK Energy Solutions, LLC | Kinetic fluid energy conversion system |
US11396822B2 (en) | 2020-08-25 | 2022-07-26 | General Electric Company | Blade dovetail and retention apparatus |
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US335726A (en) * | 1886-02-09 | Feathering paddle-wheel | ||
US4979871A (en) * | 1989-11-17 | 1990-12-25 | Reiner Harold E | Wind turbine |
GB2241747A (en) * | 1990-02-24 | 1991-09-11 | John Jason Paul Goodden | Turbine or impeller rotor |
US20110110779A1 (en) * | 2009-11-06 | 2011-05-12 | Thomas Glenn Stephens | Fluid turbine featuring articulated blades and phase-adjusted cam |
Family Cites Families (2)
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US7329099B2 (en) * | 2005-08-23 | 2008-02-12 | Paul Harvey Hartman | Wind turbine and energy distribution system |
US7911076B2 (en) * | 2006-08-17 | 2011-03-22 | Broadstar Developments, Lp | Wind driven power generator with moveable cam |
-
2010
- 2010-11-28 US US12/954,893 patent/US20120134829A1/en not_active Abandoned
-
2011
- 2011-11-28 WO PCT/US2011/062259 patent/WO2012071587A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US335726A (en) * | 1886-02-09 | Feathering paddle-wheel | ||
US4979871A (en) * | 1989-11-17 | 1990-12-25 | Reiner Harold E | Wind turbine |
GB2241747A (en) * | 1990-02-24 | 1991-09-11 | John Jason Paul Goodden | Turbine or impeller rotor |
US20110110779A1 (en) * | 2009-11-06 | 2011-05-12 | Thomas Glenn Stephens | Fluid turbine featuring articulated blades and phase-adjusted cam |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100322769A1 (en) * | 2008-02-25 | 2010-12-23 | Thomas Glenn Stephens | Fluid turbine optimized for power generation |
US20120055137A1 (en) * | 2009-02-27 | 2012-03-08 | Snecma | Fan blades with cyclic setting |
US9200594B2 (en) * | 2009-02-27 | 2015-12-01 | Snecma | Gas turbine engine having fan blades of adjustable pitch with cyclic setting |
US20110110779A1 (en) * | 2009-11-06 | 2011-05-12 | Thomas Glenn Stephens | Fluid turbine featuring articulated blades and phase-adjusted cam |
FR3018868A1 (en) * | 2014-03-18 | 2015-09-25 | Patrick Claude Michel Bouquerel | VERTICAL WINDING DEVICE WITH VARIABLE GEOMETRY |
CN104929690A (en) * | 2014-05-13 | 2015-09-23 | 从宏锦 | Fluid engine |
WO2015197878A1 (en) * | 2014-06-25 | 2015-12-30 | Renewable Innovative Sustainable Power, S.L. | Vertical axis wind turbine |
US11085417B2 (en) * | 2019-12-19 | 2021-08-10 | SJK Energy Solutions, LLC | Kinetic fluid energy conversion system |
US11396822B2 (en) | 2020-08-25 | 2022-07-26 | General Electric Company | Blade dovetail and retention apparatus |
US11697996B2 (en) | 2020-08-25 | 2023-07-11 | General Electric Company | Blade dovetail and retention apparatus |
US11834965B2 (en) | 2020-08-25 | 2023-12-05 | General Electric Company | Blade dovetail and retention apparatus |
Also Published As
Publication number | Publication date |
---|---|
WO2012071587A1 (en) | 2012-05-31 |
WO2012071587A8 (en) | 2012-11-22 |
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Owner name: BROADSTAR ENERGY CORPORATION, CONNECTICUT Free format text: SECURITY AGREEMENT;ASSIGNORS:BROADSTAR INVESTMENT COMPANY LLC;ENHANCED CAPITAL CONNECTICUT FUND I, LLC;ENHANCED CAPITAL CONNECTICUT FUND II, LLC;AND OTHERS;REEL/FRAME:027505/0935 Effective date: 20111230 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |