Patent ID: 6308965
Filing Date: 2001-10-30
Classification: A43B,A63C

Abstract:
An extendable in-line skate structure comprising:a frame having a first half and a second half;a boot having a toe section, a heel section and a cuff section;said toe section having a base and a longitudinal slot being centrally located at a mid-section of the base and provided with a first transverse teeth portion being located around the periphery of said longitudinal slot and extending parallel to a direction of the extension of said skate and;said heel section having a sole and a first hole located at a front end of said sole and being provided with a second transverse teeth portion being located around the periphery of said first hole and extending parallel to the direction of the extension of the skate, said first transverse teeth portion cooperates with said second transverse teeth portion, wherein a pin passes through said longitudinal slot, said first hole, and is received by an insertion block disposed in an insertion cavity formed in the front end of the frame so as to connect said toe portion, said heel portion and said frame;said heel section connecting to a rear end of said frame, said cuff section being attached to a top portion of said heel section;said insertion cavity having inner acute slope surfaces provided at an upper portion of said frame;said insertion block having a shape complementary to said insertion cavity;an adjustment fastener being inserted through a third hole formed at the front end of a first frame half and being received by an elongated nut that is inserted through a fourth hole formed at a second frame half;a spring coaxially surrounding said adjustment fastener and said elongated nut, and interposed between the frame halves so as to exert constant pressure against inner surfaces of said frame halves;wherein said adjustment fastener, when rotated in a tightening direction, exerts a wedging effect between the surfaces of said insertion block and said insertion cavity walls so as to engage said first transverse teeth portion and said second transverse teeth portion and obtain a linkage effect between said boot and said frame while urging said spring to compress, said adjustment fastener, when rotated in a loosening direction, expanding said spring which urges movement of the insertion block so as to permit adjustment of said first transverse teeth portion and said second transverse teeth portion so as to increase or decrease the length of said boot.