US2003211908A1PendingUtilityA1
Racket
Est. expiryMay 10, 2022(expired)· nominal 20-yr term from priority
Inventors:Norio Matsumoto
A63B 51/08
46
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Claims
Abstract
A racket includes a frame portion and a string which is threaded through the frame portion to be interlaced so as to form a first set of parallel string paths, a second set of parallel string paths, and a third set of parallel string paths. The string is threaded through the frame portion via the first, second and third sets of parallel string paths so that the string forms an approximately planar racket face. The first, second and third sets of parallel string paths intersect each other by an angle of approximately 120 degrees.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A racket comprising:
a frame portion; and a string which is threaded through said frame portion to be interlaced so as to form a first set of parallel string paths, a second set of parallel string paths, and a third set of parallel string paths; wherein said string is threaded through said frame portion via said first, second and third sets of parallel string paths so that said string forms an approximately planar racket face; and wherein said first, second and third sets of parallel string paths intersect each other by an angle of approximately 120 degrees.
2 . The racket according to claim 1 , wherein said frame portion has a plurality of string holes through which said string is threaded one after another.
3 . The racket according to claim 1 , wherein said frame portion comprises a main frame portion and a sub-frame portion; and
wherein said sub-frame portion is fixed to said main frame portion after said string is threaded through said sub-frame portion.
4 . The racket according to claim 1 , wherein said first set of parallel string paths extend in a lateral direction of said racket.
5 . A racket having a frame portion through which a string is threaded to form an approximately planar racket face;
wherein said string is threaded through said frame portion to be interlaced triaxially in a hexagonal shape.Cited by (0)
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