Patent Application
20070001056
The present inventions pertain to kites, and particularly to methods and apparatus for pulling-in kites.
Flying a kite is a fun activity. Many kite fliers desire to fly their kits higher and higher. One difficult with flying a kite very high is that there is an increasingly greater force required to pull-in the kite. For example, when several hundred and even several thousand feet of kite string is let out, the force required to pull-in the kite is significant. Conventional kite reels do not have any way of applying this amount force. This results in the user pulling the string in by hand and wrapping it around the reel causing the string to dig into the user's hand possibly damaging the skin.
Thus, there are general needs for apparatus and methods that make it easier to pull-in a kite, especially when the kite is flying very high. There are also needs for apparatus and methods that hold sufficient string to allow a kite to fly very high while providing a means to pull-in the kite when flown high.
A kite winch allows a kite to be pulled-down from a high-elevation with reduced effort. The kite winch includes first and second sprockets coupled by a chain. The second sprocket may have a larger diameter than the first sprocket. The kite winch may also include a spool for retaining kite string coupled with the second sprocket, and a handle coupled with the first sprocket. When the handle is turned, the first sprocket engages the chain which in turn engages the second sprocket thereby turning the spool pulling-down the kite. The kite winch may include an internal ratcheting mechanism within the first sprocket to selectively allow rotation of the first sprocket in one direction, a locking pin to selectively lock the second sprocket to hold the string at a constant length, and one or more adjustable chain tensioners to reduce slack in the chain by exerting at least a slight pressure on the chain. The kite winch may also include a clip to allow kite to be coupled and decoupled from the kite string on the spool.
The following description and the drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. Examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Embodiments of the invention set forth in the claims encompass all available equivalents of those claims. Embodiments of the invention may be referred to, individually or collectively, herein by the term “invention” merely for convenience and without intending to limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed.
In some embodiments, first sprocket wheel 104 may be a ratcheting sprocket wheel comprising an internal ratcheting mechanism 105 to selectively allow rotation in one direction and to allow the handle to operate as a ratchet. In some embodiments, first sprocket wheel 104 may have a switch (not separately illustrated) to allow internal ratcheting mechanism 105 to be selected to allow rotation in either direction. Internal ratcheting mechanism 105 may allow kite 117 to be let out when one position is selected without having to rotate handle 114. When the other position is selected, this may allow handle 114 to operate as a ratchet to pull-in kite 117 and prevent kite 117 from being let out further.
In some embodiments, kite winch 100 may also include locking pin 126 to selectively lock second sprocket wheel 108 to hold string 113 at a constant length. In this way, kite 117 may be easily held at a fixed elevation.
In some embodiments, kite winch 100 may also include a clip 130 to allow kite 117 to be coupled and decoupled from kite string on spool 112. In this way, kite 117 can be initially launched without kite winch 100 and once flying, can be coupled to kite winch 100 by clip 130.
In some embodiments, kite winch 100 may also include receiver 122 at an end of either the first or the second shafts. Receiver 122 may be configured to receive either a square or hexagonal insert for an electric hand-held drill. In these embodiments, the use of an electric drill may allow kite 117 to be retrieved more quickly than using handle 114 and may allow the string to be wound more quickly around spool 112.
In some embodiments, kite winch 100 may also include one or more adjustable chain tensioners 128 to reduce slack in chain 110 by exerting at least a slight pressure on chain 110. In some embodiments, a first chain of tensioners 128 may be mounted on one side of mounting brace 116 and a second of chain tensioners 128 may be mounted on an opposite side of mounting brace 116.
Mounting braces 116 and mounting platform 120 may be configured to separate and to support the first and second shafts 102 and 106. Locking pin 126 may be coupled to one of mounting braces 116.
In some embodiments, kite winch 100 may also include a plurality of ground-coupling wedges 118 to couple mounting platform 120 to earth 124. Ground-coupling wedges 118 may hold kite winch 100 to the ground and may prevent it from being lifted by kite 117.
In some embodiments, handle 114 and first and second shafts 102 and 106 may comprise plastic or PVC pipe, although other materials may also be used. In some embodiments, mounting braces 116, mounting platform 120 and ground-coupling wedges 118 may comprise wood, although other materials may also be used.
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Some embodiments of the present invention provide an apparatus for use in flying a kite. In these embodiments, the apparatus may comprise first and second sprockets coupled by a chain. The second sprocket may have larger diameter than the first sprocket. The apparatus may also include a spool for retaining kite string coupled with the second sprocket. The apparatus may also include a handle coupled with the first sprocket. When the handle is turned, the first sprocket engages the chain which in turn engages the second sprocket thereby turning the spool allowing a kite to be pulled-down from a high-elevation with reduced effort.
Some embodiments of the present invention provide a method for pulling-in a kite from a high-elevation. In these embodiments, the method comprises turning a handle coupled to a first sprocket. The first sprocket engages a chain which in turn engages a second sprocket having a larger diameter than the first sprocket. The second sprocket turns a spool retaining kite string to pull-down the kite from a high-elevation with reduced effort. The method may also comprise selecting a position for an internal ratcheting mechanism within the first sprocket to selectively allow rotation of the first sprocket in one direction and locking the second sprocket wheel to hold the string at a constant length. The method may also include adjusting slack in the chain by exerting at least a slight pressure on the chain with one or more adjustable chain tensioners. The method may also include coupling the kite string to separate string on the spool with a clip.
The Abstract is provided to comply with 37 C.F.R. Section 1.72(b) requiring an abstract that will allow the reader to ascertain the nature and gist of the technical disclosure. It is submitted with the understanding that it will not be used to limit or interpret the scope or meaning of the claims.
In the foregoing detailed description, various features are occasionally grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention may lie in less than all features of a single disclosed embodiment. Thus the following claims are hereby incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment.
