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FlipWings, flip wings, flipwings
See additionally: FlipWing
  • We are first going to save the contents of a former forum called FlipWings. Yahoo! ad people wanted more members and more activity, so we are going to delete that group and hold our forum via email. Send your messages and the moderator will integrate your sharing.    editor@upperwindpower.com   Thanks.
Flip wing, flipwing, FW
rotation
traverse
axis of rotation
stability
autorotation
powered rotation

Group Description

Flip wings rotate about an axis traverse to the ambient wind. We distinguish flip wings from Darrieus arrangements and the canoical Savonius two-part arrangement. Flip wings (FWs) alternate leading edge with trailing edge about an axis that is generally within the airfoil. Flip wings generally easily autorotate, though a stable stall may occur in some versions where rotation stops. Flip wings have many potential uses and may occur in trillions and more of shapes, sizes, colors. Flip wings may be powered by wind, gravity, or artificial power sources. Rotation may be braked or encouraged in various ways. Stability and control of particular arrangements for various purposes ever challenges. Some general uses of flip wings include but are not limited to: kite systems, kite-energy systems, gliders, paragliders (gliding kite system), parachutes (kite systems with focus on retarding fall when exiting some other object like airplanes, bridges, buildings, etc.), attractive ornaments, advertising machines, toys, etc.
Notice that an arrangement may have multiple FWs in various strings or arrays or matrices or nets. And notice that the ribbon flip wing (RFW) is included as a very extreme aspect-ratio wing. Notice that FWs may be hard-coupled with earth or structure or may be tethered and flying/gliding/kiting. And materials used in FWs may run the full spectrum of matter. Enhancements in FW systems and devices are of interest (light, energy collection, communications, control, tasking, play, competition, games, commerce, etc.)
For the purposes of this group, a Savonius arrangement will be seen as a flip wing with a slat.
This room-forum is part of the AWES Museum.

 

M1: Above all, have fun rotating flip wings one way or another for any
purpose. Tell us. Show and tell. Dream. Collaborate. Develop. Show
history. Let us know about your idea or finding or link. Have it all
be about flip wings.
M2: Flip wings rotate about an axis traverse to the ambient wind. We distinguish flip wings from Darrieus arrangements. Flip wings (FWs) alternate leading edge with trailing edge about an axis that is generally within the airfoil. Flip wings generally easily autorotate, though a stable stall may occur in some versions where rotation stops. Flip wings have many potential uses and may occur in trillions and more of shapes, sizes, colors. Flip wings may be powered by wind, gravity, or artificial power sources. Rotation may be braked or encouraged in various ways. Stability and control of particular arrangements for various purposes ever challenges. Some general uses of flip wings include but are not limited to: kite systems, kite-energy systems, gliders, paragliders (gliding kite system), parachutes (kite systems with focus on retarding fall when exiting some other object like airplanes, briges, buildings, etc.), attractive ornaments, advertising machine, toys, etc.
Notice that an arrangement may have multiple FWs in various strings or arrays or matrices or nets. And notice that the ribbon flip wing (RFW) is included as a very extreme aspect-ratio wing. Notice that FWs may be hard-coupled with earth or structure or may be tethered and flying/gliding/kiting. And materials uses in FWs may run the full spectrum of matter. Enhancements in FW systems and devices are of interest (light, energy collection, communications, control, tasking, play, competition, games, commerce, etc.)
M3: All members are invited to post links and photos and files in the special folders of this group.

One set of folders invite posting of links related to categorized FW products.

See the menu on the left of your screen. Sign in to the online group and post items in those folders.

I may host some images for some members. Images may be shown in messages, but not video.
For video, host in a free online video service and post the URL for the video.
M4: Both on and off branches, leaves seem to enter flip winging .

Noticing some special aspects of leaf-flip winging:

1. Rebound flip winging on parent plant: The leaf as wing is pressed by wind to rotate, but the tether of the leaf allows only some kiting before the torque of the tether stem halts the flipping and drives a rebound untwist. So, in this instance one finds some leavess rotating one way and then rebounding with a rotation the other way. The lift occurring in each sector of these two actions causes a bouncing action.

2. A fall leaf is in free flight and often begins a rotation about a central axis. Even when the leaf reaches the ground, if the ground is free from snags, one may observe some leaves "rolling along" which often is a result of flip winging where one edge of the leaf lifts aerodynamically and flip while then leaving the other edge of the leaf to be the airfoil leading edge. Flip, flip, flip .... rolling right along the ground. Flip winging along the ground may wear down the leaf to higher aspect ratio wing form and eventually just the central sturdy part of some leaves will end the course of flipping. Not all leaves go through such FW process, but many do every day someplace on earth. The flipping leaves crash and crunch. Such FWs eventually decay (become food for living creatures) and become soil (that allows further plants and animals to live later).

3. A fall leaf sometimes gets caught by spider webs; and some of these catches allow various types of rotations. Some are so caught that a rebound torque occurs and a set of rotations happens in one direction and then a reversing occurs for the other direction. Other arrangements allow a two-end catch flipping and lifting where a falling and re-lifting is an observed occurrence. Some catches allow a non-FW rotation where the HAWT occurs.

So, some leaves at times are non-FW kites, FW kites, free-flight gliders, free-flight FW gliders, reversing-direction FWs, single-line HAWT, non-rotating parachutes, ...

Descriptions and illustrations and videos are invited by all to open up the leaf world mostly relative to the FW instances.

How does Nature use FW in leaves? Distance traveled? Pumping fluids? Adding visual dynamic delights to the world and to appreciating humans? Spread of future nutrients (rather than just vertical drop)? Other. Scientific papers on the FW aspects of leaves are invited. Experiments? Measures?

Wafting and buffeting of leaves seem to be short spurts of flip-winging.

Also, consider making artificial constructs that end up being FWs where leaves provide the primary or dominate building material.


singular: leaf
plural: leaves
M5: Patent number: US 2501442
Filing date: Apr 6, 1948
Issue date: Mar 21, 1950
Jesse C. Donaldson

Click above image for full patent.

Discuss comprehensively as your fun and interest takes you.
M6: Rotary kite

This is a flip wing with the kite focus:
Joseph E. Smith
Rotary kite
Patent number: US 2768803
Filing date: Apr 28, 1953
Issue date: Oct 1956
M7: Wolford with appearance patent     USD160910
M8: Santos AWES Flip-Wings    Discuss the flip-wing AWES offers of Dave Santos.
Here is a video of a recent March COTS AWES flip-wing joined with line-held active oscillating wing.
http://energykitesystems.net/KiteLab/cotsAWES.avi
M9: Is the Savonius wind turbine a FW ?    Discuss.
What about the gap?
Non-gap Savonius?
When does a gap begin to determine a Darrieus?
M10: Hultgren and Bolkcom and their Rotating Kite
 Ornamental specific appearance design patent:  USD315750
M11: Willem H. A. G. van Ittersum, Netherlands
Kite
Patent number: US 2107808
Filing date: Jan 22, 1937
Issue date: Feb 8, 1938
M12: Thomas J. Bukur and his Rotary Flyer
 
View Source
 
-----------------
Active. 

 

 
===================

Patent number: 5598988
Filing date: Apr 13, 1995
 

Issue date: Feb 4, 1997
===================
Patent number: 5598988
Filing date: Apr 13, 1995
Issue date: Feb 4, 1997
Overview: 

Citations

Patent Number Filing date Issue date Original Assignee Title
US701106 Feb 14, 1902 May 27, 1902   TRAINOE
US966143 Apr 22, 1909 Aug 3, 1910   REVOLVING KITE
US1051659 Apr 27, 1908 Jan 28, 1913   APPARATUS EMPLOYED IN PLIGHT THROUGH THE AIR
US1494453 Aug 15, 1923 1924   WASHES
US2107808 Jan 22, 1937 Feb 8, 1938   VAN ITTERSUM
US2151349 Oct 22, 1937 Mar 21, 1939   FROMME
US2442846 Nov 15, 1945 Jun 8, 1948   WIND DRIVEN HELICOPTER KITE
US2472290 Mar 18, 1946 Jun 7, 1949   HELICOPTER KITE
US2494430 Mar 29, 1948 Jan 10, 1950   CARNWATH
US2501442 Apr 6, 1948 Mar 21, 1950   KOTATABLE AIRFOIL KITE
US2556877 Jun 16, 1950 Jun 12, 1951   KITE CONTROL
US2613894 May 18, 1951 Oct 14, 1952   HOWARD
US2613895 May 18, 1951 Oct 14, 1952   KITE CONTROL
US2733880 Aug 24, 1954 Feb 7, 1956   (unknown)
US2763958 May 22, 1953 Sep 25, 1956   INFLATED AERIAL TOY
US2768473 Oct 1, 1954 Oct 30, 1956   TAGGART
US2768803 Apr 28, 1953 Oct 30, 1956   ROTARY KITE
US2801063 Mar 10, 1955 Jul 30, 1957   O GORMAN
US2811327 Dec 1, 1954 Oct 29, 1957   (unknown)
US2812914 Aug 2, 1955 Nov 12, 1957   SIMULATED AIRPLANE KITE
US2835462 Feb 15, 1954 May 20, 1958   MARTIN
US2903207 Oct 2, 1957 Sep 8, 1959   WILSON
US2987280 May 28, 1956 1961   FIGURE
US3026073 Jul 6, 1959 Mar 20, 1962   ROTARY WINGED KITE
US3079115 Oct 16, 1961 Feb 26, 1963   ROTATABLE KITES
US3079116 Jan 26, 1962 Feb 26, 1963   TRIMBLE
US3086737 Apr 24, 1961 Apr 23, 1963   HYMAN
US3086738 Mar 19, 1962 Apr 23, 1963   ROTATING KITE
US3087698 Jul 11, 1961 Apr 30, 1963   BRIDLE FOR ROTATABLE AIRFOIL KITE
US3107888 Dec 26, 1961 Oct 22, 1963   AIRPLANE-LIKE KITE
US3108770 Apr 27, 1962 Oct 29, 1963   BRIDLE CONSTRUCTION FOR ROTATABLE KITE
US3116043 Sep 14, 1962 Dec 31, 1963   (unknown)
US3255985 Jun 26, 1964 Jun 14, 1966   ROTARY WINGED KITE
US3270895 Apr 22, 1965 Sep 6, 1966   AERIAL LOGGING SYSTEM
US3330511 May 28, 1964 Jul 11, 1967   KITE AND PROCESS OF MAKING IT
US3330512 Oct 24, 1965 Jul 11, 1967   FLYING SAUCER KITE
US3439887 Jul 22, 1966 Apr 22, 1969   WING ROTOR CONTROL APPARATUS
US3526377 May 22, 1967 Sep 1, 1970   AUTOROTATOR KITE
US3612450 Sep 15, 1969 Oct 12, 1971   SHEET
US3664613 Nov 25, 1970 May 23, 1972   INFLATABLE KITE WITH RELEASABLE ACCESSORY
US3687403 Aug 10, 1970 1972   FLY ABLE TOY ROTOR APPARATUS
US3740009 Mar 15, 1971 1973   SHEEI 2 OF
US3952975 May 13, 1974 Apr 27, 1976 Vonco Products, Inc. Inflatable kite
US3954236 May 14, 1975 May 4, 1976   Wind actuated rotatable tubular device
US3960346 Jan 27, 1975 Jun 1, 1976   Kite
US3997136 Jan 2, 1975 Dec 14, 1976   Toy-kite airplane
US4012017 Jun 8, 1976 Mar 15, 1977   Rotary kite
US4078745 Sep 8, 1977 Mar 14, 1978   Rotary kite
US4078746 Apr 25, 1977 Mar 14, 1978 Harold E. Schneider
Sigma Engineering Company, Inc.
Gary Wood		 Acrobatic rotary kite
US4084102 Jan 19, 1976 Apr 11, 1978   Wind driven, high altitude power apparatus
US4113209 Oct 11, 1977 Sep 12, 1978   Rotating kite
US4121794 Jun 24, 1977 Oct 24, 1978   Flying toy
US4154017 Oct 27, 1977 May 15, 1979   Tethered flying toy
US4209936 Nov 10, 1977 Jul 1, 1980   Flying saucer appendage
US4243190 Mar 8, 1979 Jan 6, 1981   Rotary wing device
US4577815 Aug 12, 1982 Mar 25, 1986   Wing assemblies for aircraft
US4601440 Jul 18, 1985 Jul 22, 1986   Line extender and rewinder for kite
US4606518 Feb 25, 1985 Aug 19, 1986   Space spinner
US4624648 Jun 24, 1985 Nov 25, 1986 Catch the Wind Kite Shops, Inc. Aerial toy
US4752051 Aug 21, 1986 Jun 21, 1988   Sound device attached to kite string
US4752052 Dec 17, 1986 Jun 21, 1988 The Marquardt Company Projectile
US4779825 Mar 3, 1987 Oct 25, 1988   Aerodynamic devices
US4790498 Mar 11, 1988 Dec 13, 1988   Space spinner
US4848704 Oct 8, 1987 Jul 18, 1989 U.F.O., Inc. Aerodynamic devices
US4871133 Jul 24, 1987 Oct 3, 1989 Llumar Star Kites, Inc. Kite bridle and method
US4874146 Sep 19, 1988 Oct 17, 1989   Steerable kite
US4878636 Feb 9, 1989 Nov 7, 1989   Kite bridle and link system and method for making same
US4884765 Jun 17, 1988 Dec 5, 1989   Highly manoeuvrable control line kite
US4892272 Oct 14, 1988 Jan 9, 1990   Kite-like flying device with dual handles and four point control
US4911383 Feb 6, 1989 Mar 27, 1990   Kite
US4911384 Mar 28, 1989 Mar 27, 1990   Winged kite
US4915320 Jun 5, 1989 Apr 10, 1990   Kite string reel
US4919365 Jun 6, 1988 Apr 24, 1990   Airfoil
US4927100 Nov 11, 1988 May 22, 1990 Patrician Corporation Airfoil configuration
US4930726 Dec 22, 1988 Jun 5, 1990   Built-in control flaps for a multi-cell wing type canopy
US4942506 Feb 13, 1989 Jul 17, 1990   Electrical light illumination for kites flown at night
US4958787 Mar 9, 1989 Sep 25, 1990   Kite
US4969615 Mar 2, 1990 Nov 13, 1990   Delta squared kite
US4981271 Oct 23, 1989 Jan 1, 1991   Stunt kite string winder
US4981273 May 9, 1989 Jan 1, 1991   Air baffle for stunt kite and stunt kite
US4988059 Aug 28, 1989 Jan 29, 1991   Large area single surface display kite
US5000401 Sep 26, 1989 Mar 19, 1991   Kite
US5000402 Jan 29, 1990 Mar 19, 1991   Kite illumination system
US5072899 May 15, 1991 Dec 17, 1991   Kite accessory release device with dissolvable member
US5183224 May 14, 1990 Feb 2, 1993   Self regulating pinwheel kite tail
US5213269 Jan 7, 1992 May 25, 1993 Bowles Fluidics Corporation Low cost, low pressure, feedback passage-free fluidic oscillator with interconnect
US5234182 May 15, 1992 Aug 10, 1993   Kite
US5251854 Sep 3, 1992 Oct 12, 1993   Two-sailed sport kite
US5277350 Apr 19, 1993 Jan 11, 1994   Kite reel assembly
US5288038 Sep 30, 1992 Feb 22, 1994   Kite
US5322247 Feb 16, 1993 Jun 21, 1994   Quad-line kite
US5328134 Aug 17, 1993 Jul 12, 1994   Dual-line or quad-line controlled kite
US5352144 May 12, 1993 Oct 4, 1994   Wind activated toy
US5366182 Nov 30, 1993 Nov 22, 1994   Kiteski
USD160910 Jul 19, 1949 Nov 14, 1950   WOLFORD KITE
USD169290 Oct 25, 1950 Apr 7, 1953   SNEED HOOD ORNAMENT OR SIMILAR ARTICLE FOR A MOTOR VEHICLE
USD169291 Oct 29, 1952 Apr 7, 1953   FLYING DISK KITE
USD171327 Apr 8, 1953 Jan 26, 1954   GOULD KITE
USD177577 Aug 17, 1953 May 1, 1956   ROTARY KITE

Referenced by

Patent Number Filing date Issue date Original Assignee Title
US5901926 Aug 7, 1997 May 11, 1999 Patent Category Corp. Collapsible flying structures
US5909859 Mar 6, 1997 Jun 8, 1999   Multi-rotor kite glider
US6045093 Jul 17, 1998 Apr 4, 2000 Patent Category Corp. Collapsible flying structures
US6273368 Apr 3, 2000 Aug 14, 2001 Patent Category Corp. Collapsible flying structures
US6283413 Sep 20, 1999 Sep 4, 2001   Rotary flyer
US7119665 Nov 9, 2004 Oct 10, 2006   Sound generator for a kite
US7458181 Dec 20, 2005 Dec 2, 2008 Reel Wings Decoy Co. Inc. Waterfowl decoy kite
US7631456 Jan 4, 2007 Dec 15, 2009 Reel Wings Decoy Company, Inc. Wind articulated waterfowl decoy having distinct sides

===================
 

 
M13: Ames and his Apparatus in 1908
Butler Ames
Apparatus employed in flight through the air

 
Patent number: 1051659
Filing date: Apr 27, 1908
Issue date: Jan 28, 1913 
 
Click image for full patent and further drawing. Discuss Ames and his claims. 
 
M14: Three team on Rotatable Kites in 1961

Joe E. Edwards, Jr.  
Alfred H. Evans
Oliver V. Phillips

Patent number: 3079115
Filing date: Oct 16, 1961
Issue date: Feb 26, 1963

Rotatable Kites
 
All are invited to see full instruction and discuss claims; click image for full patent: 
M15: Lyle and Richard team on Rotary Kite in 1976
 
Lyle William Springston
Richard Lyle Springston
 
Rotary kite
 
Patent number: 4012017
Filing date: Jun 8, 1976
Issue date: Mar 15, 1977
 
Click image for full patent.   Discuss claims. 
M16: Lemelson in 1977 with Flying Toy
 
Jerome H. Lemelson
Flying Toy
Patent number: 4121794
Filing date: Jun 24, 1977
Issue date: Oct 24, 1978
 
Click image for full patent; discuss claims. 
M17: Daniel Jeffrey in 1985 instructs Space Spinner
Space Spinner
Patent number: 4606518
Filing date: Feb 25, 1985
Issue date: Aug 19, 1986
 
Click image for full patent; discuss claims: 
M18: Sams and his aerodynamic devices in 1987
  Kenneth Sams
Aerodynamic devices
 
Patent number: 4779825
Filing date: Mar 3, 1987
Issue date: Oct 25, 1988
 
Click image for full patent; discuss claims. 
Patent DrawingM19: Mullinix in 1962 puts focus on bridle construction

Charles D. Mullinix    US3108770     Bridle construction for rotatable kite
M20: Bukur continued his flip wing interests

At message #12,  see an earlier patent on flip wing kite by Bukur. 

Also in other group:  http://groups.yahoo.com/group/kitepatents/message/519 
 
Thomas J. Bukur
 
Patent number: 5954297
Filing date: Feb 3, 1997
Issue date: Sep 21, 1999

 Click image for full patent.   Discuss claims and differences from his earlier patent. 
M21: Alfred C. Finn on Toy-kite Airplane
http://groups.yahoo.com/group/kitepatents/message/53
This concerns a flip-wing kite. 
Patent number: 3997136 
Filing date: Jan 2, 1975
Discuss. 
  • He mentions his own prior patent number: 3107888 , Filing date: Dec 26, 1961, Issue date: Oct 22, 1963, which could be studied while studying his present patent. 
  • The central bearing allows the left and right wing parts to stay integrated during the flipping rotations. 
     "transverse recess channel"
  •  
  • Two disc-like members: 
    • landing gear
    • flight-stabilizing means
    • protection means
    • [ Side-view decoration]
    • [Set-off wing off ground for possible self-re-launch. ]
Terms: rotatable wings, 
 
M22: Kite or similar article by Waclaw Deptula
Design appearance patent: 
Waclaw Deptula
Kite or similar article
Patent number: D255469
Filing date: Apr 28, 1978
Issue date: Jun 17, 1980
Click through image for more drawings.   Discuss any related product history, performance, video, etc.   DIY examples?
 
M23: Toy Aircraft by Lorist
 
[Design appearance patent.]
Toy aircraft
 Hendrick J. G. Lorist
Patent number: D280113
Filing date: Dec 12, 1983
Issue date: Aug 13, 1985
Click image for full patent.  Discuss. 
M24: Manned Flip-Wing flying machines
 Flip-wing flying machines (kites, parakites, powered fan-wing, etc) having humans aboard may be rare. 
Having a flip-wing as a parachute device would have the hazard of the rotating wing coming down on top of the pilot. 
We seek instances of flip-wing flying machines with humans aboard.  There may have been some obscure experiments that will be reported. 

 
Reports on efforts in that arena are invited. 
Reports from other types are invited also. 
M25: Frederick D. Ferguson; Magenn
 
Frederick D. Ferguson

 
Mostly flip-wing, little Magnus effect

 
His earlier item of Magnus effect: 
M26: Acrobatic rotary flyer by Harris in 1977
Patent number: 4078746
Filing date: Apr 25, 1977
Issue date: Mar 14, 1978

 Coy F. Harris

 
Click image for full patent.      Discuss claims, etc. 

M27: Mullinix on bridle for rotary kite
Patent number: 3087698
Filing date: Jul 11, 1961
Issue date: Apr 30, 1963
Charles D. Mullinix
Click image for full patent.      Discuss claims, etc. 
See another of his patents on bridle. Different claims. Search his last name in our group.

 
M28: Butz instruct Waterfowl Decoy Kite, a flip-wing kite
Click image for full patent.      Discuss claims, etc. 
( flip wing) This is also being discussed at: 
http://groups.yahoo.com/group/kitepatents/message/1075  
==============================================
 

Waterfowl Decoy Kite

Patent number: 7458181
Filing date: Dec 20, 2005
Issue date: Dec 2, 2008
Application number: 11/313,582

Scott Butz, of Argusville, North Dakota

 
M29: Modes of flipwinging

During a flip (whether the flip is partial small, partial large, or full)

... we get a variety of modes or actions occurring: 

 
  • Shunting
  • Tacking
  • Somersaulting

 
Or: 
  • Flagging
  • One-directional rotating
  • Reversals in directions of rotating

 

 
And: 
  • FlipWing, FlipWing video,     FlipWing    (sometimes: wing rotor)
  • flip-wing  now:  flipwing   "public domain technical class name" +Dave Santos     FlipWing TM Some flipwings shunt, some do not shunt. "Fundamentally the FlipWing is two-line "reversible" C-kite stretched out to the superior higher-lift flat geometry of a multi-bridled bow-kite, but, being single skin, is lower mass & way cheaper." Dave Santos
  • Modes of "flipwing"   AirborneWindEnergy/message/8335
    • partial flip
    • full flip
    • tacking
    • shunting
    • somersaulting
    • flagging
  • Discussion group mainly focused on somersaulting rotary flip wing kite systems:  FlipWings


 
Patent DrawingM30:  Calhoun instructs Tethered Toy Airplane
US2593979
Tethered Toy Airplane
Jack A. Calhoun
Patent number: 2593979
Filing date: Jan 11, 1952
Issue date: Apr 22, 1952
Click image for full patent document. Discuss claims, etc. 
M31: Aerodynamic Devices. Kenneth Sams. 1987. US 4848704
Also study the message: http://tech.groups.yahoo.com/group/FlipWings/message/18 
but this below patent is distinct from his other patent.

Click image for full patent.      Discuss claims, etc. 
Kenneth Sams

Aerodynamic Devices

Patent number: 4848704
Filing date: Oct 8, 1987
Issue date: Jul 18, 1989
Click any above images to obtain the full patent.    Discuss claims, etc.
M32:  Albertson in 1959 instructs Rotary Winged Kite
Click image for full patent.      Discuss claims, etc. 
 Stanley E. Albertson

Rotary Wing Kite

Patent number: 3026073
Filing date: Jul 6, 1959
Issue date: Mar 20, 1962
Click any image above to get full patent.   Discuss claims, etc.
M33: TumblewingsPost your links and notes about tumblewings which are flipwings:
M34: Someone exploring ...
 http://sciencephotography.com/andy/kites.htm
M35: Rotating ribbon flip-wing kites (RWK)
 Welcome to this thread are notes, examples, discussions, plans, etc. on rotating-ribbon flip-wing kites of two spread anchors. 
At the base of the long flip-wing of the ribbon sort are swivels or slip rings; design of these are invited.    What is the "life" in operating hours of this or that swivel?
Intermediate swivels that live between wing segments?   Specifications for the ribbon wing? Advanced ribbons? Small chords.   Large chords.  Mining energy from the operated kite? Sound measures?   Uses of the RWK used singly or in clusters or farms?

Rod Read has some notes. 
We give some beginning links: 
M36: New, simpler, easier way to grow an AWE service
New, simpler way:  http://www.energykitesystems.net/donate.html
M37: Re: Rotating ribbon flip-wing kites (RWK)
HTTP://WEAVEANYTHING.BLOGSPOT.COM/2012/03/SKYBOW-THOUGHTS.HTML
M38: AWE Encampment flip wing exploration

Flip Wing

also being discussed at group AirborneWindEnergy: airbornewindenergy/conversations/messages/10764
 
edoishi wrote: 
 
kPower demonstrates the power of a 3 meter wingspan FlipWing at the Texas AWE Encampment. Wind speed was approximately 18mph.  The metal spring scale was hard to hold in my bare hand (with the camera in the other hand) and therefore much power was lost through my body.  Stop motion on the camera revealed spikes up to 25 lbs. More accurate testing to follow.

 
Crude Video: http://youtu.be/edB6uWXV8Qs
 
Scale demonstration anticipates giant wings flying high above the Earth. Ground based single stroke kite engines will harvest the power.
 
kPower CC by 3.0
M39: William Dean Hay, filed 28April1995
 William Dean Hay
Filed: April 28, 1995
Flying toy: kite    CA 2148157 A1

Hay takes effort to mention Lemelson's patent which we discuss in 
But Hay has 7 claims we are up for study and discussion. 
M40: Thomas J. Bukur in 1999
 

Rotary flyer
US 6283413 B1

Filed Sep 20, 1999
 
We have note other of his flip-wing patents, but just now list this patent that had been overlooked until now.  Here he instructs on many matters of interest.
The examiner cited some patents. It may be interesting to discover just why the examiner cited each patent that was cited. E.g., why cite the Rogallo patent US 3296617  Target Kite ?

 
Also, the examiner cited a US 5598988 with a name spelling that needs to be verified. Answer: On the present patent for this reference, there was a typo error of spelling. What was printed "Burkur" should have been "Bukur" for the same inventor of the present topic. 
M41:  Notice by Yahoo of closure of the group name.
  • Folders that were started for holding links
    • FW products for advertising and entertainment
    • Non-kite FW energy-production machine products
    • Industrial FW kite system products
    • Toy FW kite products Reserve this folder for toy scale FW kite products. See other folders for industrial FW kite products
    • RFW products Ribbon flip wing products
Group deleted. Stree of threat of deletion is too much cost to moderator, so we will develop the messages in this folder at EnergyKiteSystems.net
Webmaster work yet:

Redirect to this folder where the FlipWings folder was mentioned: AWESMuseum, Glossary, else?
O'gorman William Francis    Filed: Mar 10, 1955    Airplane-kite   US2801063     The wings are flip-wings rotating in one direction.
Flying the SkyBow under a Lifter Kite               CoopIP, by kPower; March 2014. AirborneWindEnergy/conversations/messages/12063  
 
 
 
 
 
 

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