US20120134821A1 - Fluid Turbine Having Improved Cam and Follower Mechanism - Google Patents
Fluid Turbine Having Improved Cam and Follower Mechanism Download PDFInfo
- Publication number
- US20120134821A1 US20120134821A1 US12/954,889 US95488910A US2012134821A1 US 20120134821 A1 US20120134821 A1 US 20120134821A1 US 95488910 A US95488910 A US 95488910A US 2012134821 A1 US2012134821 A1 US 2012134821A1
- Authority
- US
- United States
- Prior art keywords
- axis
- rotation
- rocker
- fluid turbine
- 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 35
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002955 isolation 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
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
- 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
- F05B2260/00—Function
- F05B2260/50—Kinematic linkage, i.e. transmission of position
- F05B2260/506—Kinematic linkage, i.e. transmission of position using cams or eccentrics
-
- 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
- F05B2260/00—Function
- F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05B2260/72—Adjusting of angle of incidence or attack of rotating blades by turning around an axis parallel to the rotor centre line
-
- 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
- F05B2260/00—Function
- F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05B2260/79—Bearing, support or actuation arrangements therefor
-
- 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, having an axis of rotation, comprising 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.
- a blade pitch control mechanism comprises a cam and at least one rocker assembly, each rocker assembly comprising a rocker arm operable to pivot about an axis of rotation, the blade pitch control mechanism being 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, having an axis of rotation, comprising 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.
- a blade pitch control mechanism comprising a cam and at least one rocker assembly, each rocker assembly comprising a rocker arm operable to pivot about an axis of rotation and a cam follower bearing, secured to the distal end thereof, operable to ride on a surface of the cam, the blade pitch control mechanism being 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 frame, a rotor, comprising a hub secured to the frame in such manner as to rotate about an axis of rotation with respect thereto and 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.
- a blade pitch control mechanism comprises a mostly stationary cam secured to the frame and having a surface defining a rotor blade pitch profile and at least one rocker assembly, each rocker assembly comprising a rocker arm secured to the hub in such manner as to pivot about an axis of rotation with respect thereto and a cam follower bearing, secured to the distal end thereof, operable to ride on a surface of the cam, the blade pitch control mechanism being 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 a fluid turbine according to certain embodiments of the present disclosure
- FIG. 3 is an isometric view of a rotor hub according to one embodiment of the present invention.
- FIG. 4 is a top view of a rocker assembly according to certain embodiments of the present invention.
- FIG. 5 is a front view of a rocker assembly according to certain embodiments of the present invention.
- FIG. 6 is an end view of a rotor hub assembly according to certain embodiments of the present invention.
- FIG. 7 is a three-dimensional view of a rocker arm assembly according to certain embodiments of the present invention.
- FIG. 8 is a section view of the rocker arm assembly of FIG. 7 ;
- FIG. 9 is a three-dimensional view of a rocker arm according to certain embodiments of the present invention.
- FIG. 10 is a three-dimensional view of a yoke according to certain embodiments of the present invention.
- FIG. 11 is a three-dimensional view of a blade pitch control link according to certain embodiments of the present invention.
- FIG. 1 is an isometric view of a fluid turbine 100 according to certain embodiments of the present disclosure.
- turbine 100 consists of a rotor assembly comprising a torque tube 104 riding on bearings 106 mounted on a frame 102 .
- Torque tube 104 is designed to prevent each rotor hub 108 from rotating independently of the other rotor hubs 108 .
- Torque tube 104 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 110 mounted to rotor hubs 108 at their proximal ends and to a set of rotor blades 112 at their distal ends.
- the rotor blades 112 shown in FIG. 1 are high aspect ratio airfoils/hydrofoils having a clearly defined leading and trailing edge.
- Turbine 100 shown in in FIG. 1 comprises 10 blades, but alternate embodiments may have more or fewer blades, depending on the application.
- the rotor blades 112 are attached to the struts 110 in such a manner as to allow the rotor blades 112 to be individually pivoted with respect to the axis of rotation of turbine 100 , thus altering the pitch angle of each rotor blade 112 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. 2 is an end view of a fluid turbine 100 according to certain embodiments of the present disclosure.
- the fluid turbine 100 shown in FIG. 2 incorporates ten rotor blades 112 .
- the pitch angle of the ten rotor blades 112 are designated angles A-J with the blade pitch angle of the rotor blade at angular position 0 being designated angle “A”.
- the blade pitch angles of the other rotor blades 112 are designated angles “B” through “J”, at multiples of 36 degrees from angle “A”, counter-clockwise.
- angle “B” is the pitch angle of a rotor blade 112 disposed at an angular position 36 degrees counter-clockwise from
- angle “C” is the pitch angle of a rotor blade 112 disposed at an angular position 72 degrees from 0, and so forth.
- the turbine 100 incorporates at least one mechanism to vary the blade pitch according to angular position as a rotor blade 112 moves around the rotational axis of the turbine 100 .
- the pattern or profile of blade pitch vs. angular position may vary depending on a number of factors, including but not limited to rotor velocity and free stream fluid velocity. Thus, it may be desirable to modify the blade pitch profile as conditions change.
- FIG. 3 is an isometric view of a rotor hub according to one embodiment of the present invention.
- Hub 200 revolves about a cam 204 as the rotor revolves about its axis of rotation.
- Cam 204 remains stationary inside hub 200 as the rotor revolves.
- a set of rocker assemblies 206 secured to hub 200 , ride on a surface of cam 204 as the hub 200 revolves.
- Each rocker assembly 206 is connected to an actuation rod 208 and at least one spring 210 secured to a strut at one end and the actuation rod 208 at the other.
- the springs 210 hold the cam followers securely against a surface of the cam 204 .
- 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 a 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 pitch.
- the pattern of the cam which may be one of the patterns set forth heretofore, or may be a different pattern.
- FIG. 4 is a top view of a rocker assembly according to certain embodiments of the present invention.
- FIG. 5 is a front view of a rocker assembly 206 according to certain embodiments of the present invention.
- Rocker assembly 206 comprises a rocker cartridge 250 which acts as a frame for rocker assembly 206 .
- Rocker cartridge 250 has a cylindrical body protruding from the back of a front flange, and a generally-cylindrical aperture passing from front to back.
- a rocker arm 252 is mounted to a shaft passing through the cylindrical aperture in the body of the rocker cartridge 250 , and mounted in such a manner as to pivot about an axis of rotation passing through the aperture.
- rocker arm 252 will pivot on bearings of some type, which may be sleeve bearings, ball bearings or needle bearings, as examples.
- a cam follower bearing 254 is secured to the distal end of the rocker arm 252 and oriented in such manner as to freely rotate about an axis of rotation generally parallel to, but offset from, the axis of rotation of the rocker arm 252 .
- Cam follower bearing 254 is designed to ride on the outer surface of cam 204 as hub 200 revolves around stub axle 202 .
- Cam follower bearing 254 may be selected from any one of a number of bearing types, including sleeve bearings, ball bearings or needle bearings, as examples.
- rocker arm 252 will pivot to follow the profile of a surface of the cam 204 , thereby rotating the shaft portion passing through the aperture in the body of the rocker cartridge 250 .
- a lever arm 256 is secured to the shaft portion in such a manner as to pivot with the rocker arm 252 .
- the lever arm 256 is also secured to an actuation rod 208 in such a manner as to move the actuation rod 208 as the rocker arm 252 rotates. With this arrangement, the actuation rod 208 moves according to the profile of the surface of cam 204 as the rocker assembly 206 moves about the cam 206 .
- FIGS. 6-11 depict a second embodiment of a cam-and-follower mechanism according to certain embodiments of the present invention.
- FIG. 6 depicts an end view of a rotor hub having an array of ten rocker assemblies 300 disposed circumferentially therein.
- each rocker assembly 300 comprises a rocker arm 302 rotatably secured at a center pivot to a yoke 306 .
- the rocker arm 302 has a blade pitch control link 304 secured to a first end thereof and a roller 308 secured to a second end opposite the pivot from the first end. In operation, roller 308 rides on a surface of a blade pitch control cam.
- FIGS. 7-11 depict detailed three-dimensional views of rocker arm 302 , yoke 306 and blade pitch control link 304 in isolation.
Abstract
Description
- According to a first embodiment, the present disclosure relates to a fluid turbine comprising a rotor, having an axis of rotation, comprising 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. A blade pitch control mechanism comprises a cam and at least one rocker assembly, each rocker assembly comprising a rocker arm operable to pivot about an axis of rotation, the blade pitch control mechanism being 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 embodiment, the present disclosure relates to a fluid turbine comprising a rotor, having an axis of rotation, comprising 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. A blade pitch control mechanism comprising a cam and at least one rocker assembly, each rocker assembly comprising a rocker arm operable to pivot about an axis of rotation and a cam follower bearing, secured to the distal end thereof, operable to ride on a surface of the cam, the blade pitch control mechanism being 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 embodiment, the present disclosure relates to a fluid turbine comprising a frame, a rotor, comprising a hub secured to the frame in such manner as to rotate about an axis of rotation with respect thereto and 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. A blade pitch control mechanism comprises a mostly stationary cam secured to the frame and having a surface defining a rotor blade pitch profile and at least one rocker assembly, each rocker assembly comprising a rocker arm secured to the hub in such manner as to pivot about an axis of rotation with respect thereto and a cam follower bearing, secured to the distal end thereof, operable to ride on a surface of the cam, the blade pitch control mechanism being 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 a fluid turbine according to certain embodiments of the present disclosure; -
FIG. 3 is an isometric view of a rotor hub according to one embodiment of the present invention; -
FIG. 4 is a top view of a rocker assembly according to certain embodiments of the present invention; -
FIG. 5 is a front view of a rocker assembly according to certain embodiments of the present invention; -
FIG. 6 is an end view of a rotor hub assembly according to certain embodiments of the present invention; -
FIG. 7 is a three-dimensional view of a rocker arm assembly according to certain embodiments of the present invention; -
FIG. 8 is a section view of the rocker arm assembly ofFIG. 7 ; -
FIG. 9 is a three-dimensional view of a rocker arm according to certain embodiments of the present invention; -
FIG. 10 is a three-dimensional view of a yoke according to certain embodiments of the present invention; and -
FIG. 11 is a three-dimensional view of a blade pitch control link according to certain embodiments of the present invention. - 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. Structurally,turbine 100 consists of a rotor assembly comprising atorque tube 104 riding onbearings 106 mounted on aframe 102.Torque tube 104 is designed to prevent eachrotor hub 108 from rotating independently of theother rotor hubs 108.Torque tube 104 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 110 mounted torotor hubs 108 at their proximal ends and to a set ofrotor blades 112 at their distal ends. Therotor blades 112 shown inFIG. 1 are high aspect ratio airfoils/hydrofoils having a clearly defined leading and trailing edge.Turbine 100 shown in inFIG. 1 comprises 10 blades, but alternate embodiments may have more or fewer blades, depending on the application. Therotor blades 112 are attached to thestruts 110 in such a manner as to allow therotor blades 112 to be individually pivoted with respect to the axis of rotation ofturbine 100, thus altering the pitch angle of eachrotor blade 112 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. 2 is an end view of afluid turbine 100 according to certain embodiments of the present disclosure. Thefluid turbine 100 shown inFIG. 2 incorporates tenrotor blades 112. The pitch angle of the tenrotor blades 112 are designated angles A-J with the blade pitch angle of the rotor blade at angular position 0 being designated angle “A”. The blade pitch angles of theother rotor blades 112 are designated angles “B” through “J”, at multiples of 36 degrees from angle “A”, counter-clockwise. Thus, angle “B” is the pitch angle of arotor blade 112 disposed at an angular position 36 degrees counter-clockwise from 0, angle “C” is the pitch angle of arotor blade 112 disposed at an angular position 72 degrees from 0, and so forth. - Because of the fact that the angle between a
rotor blade 112 and the fluid flow will vary as therotor blade 112 moves around the axis of rotation of theturbine 100, the optimal pitch angle for torque generation will vary accordingly as thatrotor blade 112 moves around the axis of rotation. In order to optimize the angle between the blade pitch and the fluid flow, theturbine 100 disclosed herein incorporates at least one mechanism to vary the blade pitch according to angular position as arotor blade 112 moves around the rotational axis of theturbine 100. The pattern or profile of blade pitch vs. angular position may vary depending on a number of factors, including but not limited to rotor velocity and free stream fluid velocity. Thus, it may be desirable to modify the blade pitch profile as conditions change. -
FIG. 3 is an isometric view of a rotor hub according to one embodiment of the present invention.Hub 200 revolves about acam 204 as the rotor revolves about its axis of rotation. Cam 204 remains stationary insidehub 200 as the rotor revolves. A set of rocker assemblies 206, secured tohub 200, ride on a surface ofcam 204 as thehub 200 revolves. Eachrocker assembly 206 is connected to anactuation rod 208 and at least onespring 210 secured to a strut at one end and theactuation rod 208 at the other. Thesprings 210 hold the cam followers securely against a surface of thecam 204. - 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 a 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 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, which may be one of the patterns set forth heretofore, or may be a different pattern. -
FIG. 4 is a top view of a rocker assembly according to certain embodiments of the present invention.FIG. 5 is a front view of arocker assembly 206 according to certain embodiments of the present invention. Rockerassembly 206 comprises arocker cartridge 250 which acts as a frame forrocker assembly 206. Rockercartridge 250 has a cylindrical body protruding from the back of a front flange, and a generally-cylindrical aperture passing from front to back. Arocker arm 252 is mounted to a shaft passing through the cylindrical aperture in the body of therocker cartridge 250, and mounted in such a manner as to pivot about an axis of rotation passing through the aperture. In general,rocker arm 252 will pivot on bearings of some type, which may be sleeve bearings, ball bearings or needle bearings, as examples. - A cam follower bearing 254 is secured to the distal end of the
rocker arm 252 and oriented in such manner as to freely rotate about an axis of rotation generally parallel to, but offset from, the axis of rotation of therocker arm 252. Cam follower bearing 254 is designed to ride on the outer surface ofcam 204 ashub 200 revolves aroundstub axle 202. Cam follower bearing 254 may be selected from any one of a number of bearing types, including sleeve bearings, ball bearings or needle bearings, as examples. - As cam follower bearing 254 rides along a surface of
cam 204,rocker arm 252 will pivot to follow the profile of a surface of thecam 204, thereby rotating the shaft portion passing through the aperture in the body of therocker cartridge 250. Alever arm 256 is secured to the shaft portion in such a manner as to pivot with therocker arm 252. Thelever arm 256 is also secured to anactuation rod 208 in such a manner as to move theactuation rod 208 as therocker arm 252 rotates. With this arrangement, theactuation rod 208 moves according to the profile of the surface ofcam 204 as therocker assembly 206 moves about thecam 206. -
FIGS. 6-11 depict a second embodiment of a cam-and-follower mechanism according to certain embodiments of the present invention.FIG. 6 depicts an end view of a rotor hub having an array of tenrocker assemblies 300 disposed circumferentially therein. As seen inFIGS. 7 and 8 , eachrocker assembly 300 comprises arocker arm 302 rotatably secured at a center pivot to ayoke 306. Therocker arm 302 has a blade pitch control link 304 secured to a first end thereof and aroller 308 secured to a second end opposite the pivot from the first end. In operation,roller 308 rides on a surface of a blade pitch control cam. The blade pitch control link 304 moves along with, but opposite to, the motion ofroller 308 as it moves along the surface of the blade pitch control cam.FIGS. 7-11 depict detailed three-dimensional views ofrocker arm 302,yoke 306 and blade pitch control link 304 in isolation. - 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 being 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 |
---|---|---|---|
US12/954,889 US20120134821A1 (en) | 2010-11-28 | 2010-11-28 | Fluid Turbine Having Improved Cam and Follower Mechanism |
PCT/US2011/062258 WO2012074936A1 (en) | 2010-11-28 | 2011-11-28 | Fluid turbine having improved cam and follower mechanism |
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 |
---|---|---|---|
US12/954,889 US20120134821A1 (en) | 2010-11-28 | 2010-11-28 | Fluid Turbine Having Improved Cam and Follower Mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120134821A1 true US20120134821A1 (en) | 2012-05-31 |
Family
ID=46126791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/954,889 Abandoned US20120134821A1 (en) | 2010-11-28 | 2010-11-28 | Fluid Turbine Having Improved Cam and Follower Mechanism |
Country Status (2)
Country | Link |
---|---|
US (1) | US20120134821A1 (en) |
WO (1) | WO2012074936A1 (en) |
Cited By (2)
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 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7066A (en) * | 1850-02-05 | Preparation of portable soup-bread | ||
US3247907A (en) * | 1963-09-18 | 1966-04-26 | Boeing Co | Blade folding mechanism for rotary wing aircraft |
US4383801A (en) * | 1981-03-02 | 1983-05-17 | Pryor Dale H | Wind turbine with adjustable air foils |
US6840738B1 (en) * | 2004-04-06 | 2005-01-11 | Marvin L. Swanberg | Feathering turbine apparatus |
US7518864B2 (en) * | 2004-11-29 | 2009-04-14 | Sony Corporation | Cooling fan and image display apparatus |
US20100322769A1 (en) * | 2008-02-25 | 2010-12-23 | Thomas Glenn Stephens | Fluid turbine optimized for power generation |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5324164A (en) * | 1991-06-13 | 1994-06-28 | Doering John N | Fluid active device |
DE19948997B4 (en) * | 1999-10-11 | 2005-04-14 | Aerodyn Engineering Gmbh | Single blade adjustment for wind turbines |
US6439195B1 (en) * | 2000-07-30 | 2002-08-27 | Detroit Diesel Corporation | Valve train apparatus |
US6405707B1 (en) * | 2000-12-18 | 2002-06-18 | Caterpillar Inc. | Integral engine and engine compression braking HEUI injector |
US6640759B1 (en) * | 2002-04-12 | 2003-11-04 | Delphi Technologies, Inc. | Two-step finger follower rocker arm |
US7911076B2 (en) * | 2006-08-17 | 2011-03-22 | Broadstar Developments, Lp | Wind driven power generator with moveable cam |
-
2010
- 2010-11-28 US US12/954,889 patent/US20120134821A1/en not_active Abandoned
-
2011
- 2011-11-28 WO PCT/US2011/062258 patent/WO2012074936A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7066A (en) * | 1850-02-05 | Preparation of portable soup-bread | ||
US3247907A (en) * | 1963-09-18 | 1966-04-26 | Boeing Co | Blade folding mechanism for rotary wing aircraft |
US4383801A (en) * | 1981-03-02 | 1983-05-17 | Pryor Dale H | Wind turbine with adjustable air foils |
US6840738B1 (en) * | 2004-04-06 | 2005-01-11 | Marvin L. Swanberg | Feathering turbine apparatus |
US7518864B2 (en) * | 2004-11-29 | 2009-04-14 | Sony Corporation | Cooling fan and image display apparatus |
US20100322769A1 (en) * | 2008-02-25 | 2010-12-23 | Thomas Glenn Stephens | Fluid turbine optimized for power generation |
Cited By (2)
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 |
Also Published As
Publication number | Publication date |
---|---|
WO2012074936A1 (en) | 2012-06-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20100322769A1 (en) | Fluid turbine optimized for power generation | |
US20120134829A1 (en) | Fluid Turbine Featuring Dynamically Phase-Adjustable Cam | |
KR101732604B1 (en) | Vertical axis turbine | |
EP1888917B1 (en) | Vertical axis wind turbine having an overspeeding regulator controlling multiple aerodynamic elements | |
JP5220351B2 (en) | Turbomachine stator including a stage of stator blades actuated by a self-aligned rotating ring | |
JP6857678B2 (en) | Exhaust gas turbocharger | |
US20110110779A1 (en) | Fluid turbine featuring articulated blades and phase-adjusted cam | |
US8979495B2 (en) | Control system and method for rotor assembly | |
JP2009526939A (en) | Turbocharger with adjustable guide blade, blade lever and adjustment ring for it | |
JP7109478B2 (en) | Segmented airfoil design for guidewires | |
US20140322013A1 (en) | Independent variable blade pitch and geometry wind turbine control | |
US20120134819A1 (en) | Fluid Turbine Featuring Improved Blade Mounting Structure | |
US20120134821A1 (en) | Fluid Turbine Having Improved Cam and Follower Mechanism | |
US20150125298A1 (en) | Fluid turbine for power generation | |
WO2008053134A1 (en) | Wind generator | |
US9970306B2 (en) | Fluid dynamic machine with one or more impellers with restrained control mobile blades | |
US20120134820A1 (en) | Fluid Turbine Having Optimized Blade Pitch Profiles | |
JP4857314B2 (en) | Windmill | |
WO2021201951A3 (en) | Dynamically adjustable rotorcraft swashplate with undulating surface | |
JPS59120783A (en) | Movable vane type gage-shaped water wheel | |
JP2011094574A (en) | Vertical shaft wind turbine device | |
WO2023055333A2 (en) | Vertical turbine with 360-degree moving propellers | |
CN116398472A (en) | Blade adjusting device and air compressor | |
US510306A (en) | Wind-wheel | |
RU1800142C (en) | Windwheel |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BROADSTAR WIND SYSTEMS GROUP, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BRANTLEY, BRANDON D.;SWANSON, BRUCE E.;DUDLEY, FRANCIS;REEL/FRAME:026227/0494 Effective date: 20101103 |
|
AS | Assignment |
Owner name: BROADSTAR INVESTMENT COMPANY, LLC, CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BROADSTAR WIND SYSTEMS GROUP, LLC;REEL/FRAME:027387/0978 Effective date: 20110222 |
|
AS | Assignment |
Owner name: CONNECTICUT DEVELOPMENT AUTHORITY, CONNECTICUT Free format text: PATENT COLLATERAL ASSIGNMENT AND SECURITY AGREEMENT;ASSIGNOR:BROADSTAR INVESTMENT COMPANY, LLC;REEL/FRAME:027464/0362 Effective date: 20111228 |
|
AS | Assignment |
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 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |