IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0770923
(2001-01-26)
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발명자
/ 주소 |
- Miller, Todd Scott
- Barnes, Larry G.
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대리인 / 주소 |
Liniak, Berenato & White, LLC
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인용정보 |
피인용 횟수 :
4 인용 특허 :
5 |
초록
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A plurality of spaced apart, flexible string hinges pivotally join an airfoil of a model airplane to its corresponding flight control element. Such string hinges are shown in use for pivotally joining an aileron to a wing, a rudder to a tail fin and an elevator or flap to a horizontal stabilizer to
A plurality of spaced apart, flexible string hinges pivotally join an airfoil of a model airplane to its corresponding flight control element. Such string hinges are shown in use for pivotally joining an aileron to a wing, a rudder to a tail fin and an elevator or flap to a horizontal stabilizer to permit rolling, yawing, and pitching movement, respectively, of the airplane when in flight. In one embodiment, a plurality of string hinges are connected by means of conventional airplane glue between a series of spaced apart blind holes formed in a leading edge portion of an aileron and similarly spaced apart reinforcing ribs of a wing. In another embodiment, a plurality of string hinges extend between blind holes formed in a solid balsa aileron and holes formed through a trailing edge spar of a wing and are secured at opposite ends by glue or epoxy. Examples of string hinges used to pivotally join a rudder to a tail fin and an elevator to a horizontal stabilizer in a model airplane are also disclosed.
대표청구항
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1. A model airplane structure, means for pivotally connecting at least one flight control member to a corresponding airfoil comprising a series of spaced apart, flexible hinges comprised of substantially cylindrical cable, each of said hinges being formed of a separate piece of said cable having one
1. A model airplane structure, means for pivotally connecting at least one flight control member to a corresponding airfoil comprising a series of spaced apart, flexible hinges comprised of substantially cylindrical cable, each of said hinges being formed of a separate piece of said cable having one end connected to said flight control member and an opposite end connected to said airfoil, said cable hinges being tightly strung between said flight control member and said air foil such that each separate piece of said cable can only bend at one position between said flight control member and airfoil as said member and said airfoil pivot relative to one another. 2. The structure of claim 1 wherein each of said cable hinges extends between a different one of at least several reinforcing ribs of said airfoil and a parallel aligned blind hole formed in a leading edge portion of said corresponding flight control member. 3. The structure of claim 1 wherein each of said cable hinges extends between a different blind hole formed in said flight control member and an aligned hole formed through a trailing edge spar of said airfoil. 4. The structure of claim 1 wherein said flight control member comprises an aileron and said airfoil comprises a wing. 5. The structure of claim 1 wherein said flight control member comprises a rudder and said airfoil comprises a vertical tail fin. 6. The structure of claim 1 wherein said flight control member comprises an elevator and said airfoil comprises a horizontal stabilizer. 7. The structure of claim 1 wherein said cable hinges are secured to said flight control member and said airfoil by means of glue. 8. The structure of claim 1 wherein said cable hinges are secured to said flight control member and said airfoil by means of epoxy. 9. The structure of claim 1 wherein said cable hinges are selected from the group consisting essentially of cable made of cotton, plastic, jute, hemp and metal fiber which have a tensile strength of at least ten pounds. 10. A method for movably joining a flight control member to a support element of a corresponding airfoil in a model airplane, the steps of which compriseproviding said flight control member and said corresponding airfoil; andpivotally joining said flight control member to said support element of said corresponding airfoil with a series of separate spaced apart, flexible string hinges, each of said hinges being constructed of a different piece string having a tensile strength of at least ten pounds; wherein said string can only bend at one position between said flight control member and airfoil as said member and said airfoil pivot relative to one another. 11. A method for movably joining a flight control member to a corresponding airfoil in a model airplane, the step of which compriseproviding a flight control member constructed of a solid material;providing an airfoil corresponding to said flight control member which contains a series of transversely spaced apart reinforcing ribs and a transversely extending trailing edge spar;forming a series of spaced apart blind holes in a leading edge portion of said flight control member which are aligned parallel with but slightly offset to form a like series of said reinforcing ribs when said flight control member is operatively positioned against said airfoil;forming a like series of holes through said trailing edge spar, each of said spar holes being aligned with a different one of said blind holes when said flight control member is operatively positioned against said airfoil;forming a like series of holes through each of said reinforcing ribs which are slightly offset from said blind holes;stringing a like series of flexible string hinges tightly between said blind holes, through said spar holes and alongside said reinforcing ribs to and through said rib holes;gluing opposite end portions of each of said string hinges in a different one of said blind holes and a corresponding one of said rib holes when said string hinges are tightly strung between said blind holes and said rib holes and when said flight control member is operatively aligned against airfoil. 12. The method of claim 10 wherein said structural component is a trailing edge spar, said pivotally joining step further comprisingforming a series of spaced apart blind holes in said flight control member;forming a like series of spaced apart holes through said trailing edge spar which are aligned with said blind holes when said flight control member and airfoil are operatively positioned;stringing said string hinges between said blind holes and said spar holes; andgluing opposite end portions of said string hinges in different aligned pairs of said blind holes and said spar holes. 13. In a model airplane structure, means for pivotally connecting at least one flight control member to a corresponding airfoil structural support component, said means comprising a series of spaced apart, flexible string hinges, each of said hinges being formed of a different and separate piece of string having opposite first and second end portions connected to said member and said airfoil structural support component, respectively, such that each of said separate pieces of string forming a different one of said hinges is tightly strung between said flight control member and said airfoil structural support component and can only bend at one position as said member and said airfoil pivot relative to one another. 14. In a model airplane structure, means for pivotally connecting at least one flight control member to a corresponding airfoil comprising a series of spaced apart, flexible string hinges tightly strung between said flight control member and said airfoil, wherein each of said string hinges extends between a different one of at least several reinforcing ribs of said airfoil and a parallel aligned blind hole formed in a leading edge portion of said corresponding flight control member. 15. In a model airplane structure, means for pivotally connecting at least one flight control member to a corresponding airfoil comprising a series of spaced apart, flexible string hinges tightly strung between said flight control member and said airfoil, wherein each of said string hinges extends between a different blind hole formed in said flight control member and an aligned hole formed through a trailing edge spar of said airfoil. 16. In a model airplane structure, means for pivotally connecting at least one flight control member to a corresponding airfoil comprising a series of spaced apart, flexible essentially cylindrical cable hinges strung between said flight control member and said airfoil, wherein said cable hinges are selected from the group consisting essentially of cable made of cotton, plastic, jute, hemp and metal fiber which have a tensile strength of at least ten pounds, wherein said cable can only bend at one position between said flight control member and airfoil as said member and said airfoil pivot relative to one another. 17. A method for movably joining a flight control member to a corresponding airfoil in a model airplane, the steps of which compriseproviding said flight control element and said corresponding airfoil; andpivotally joining said flight control member to said corresponding airfoil with a series of spaced apart, flexible string hinges constructed of pieces of string having a tensile strength of at least ten pounds, said airfoil containing a trailing edge spar, said pivotally joining step further comprising,forming a series of spaced apart blind holes in said flight control member;forming a like series of spaced apart holes through said trailing edge spar which are aligned with said blind holes when said flight control member and airfoil are operatively positioned;stringing said string hinges between said blind holes and said spar holes; andgluing opposite end portions of said string hinges in different aligned pairs of said blind holes and said spar holes.
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