초록

A stent may be constructed comprising a plurality of interconnected circumferential bands each bands comprising a plurality of concave and/or convex M-shaped segments joined together by loops.

대표청구항 ▼

A stent may be constructed comprising a plurality of interconnected circumferential bands each bands comprising a plurality of concave and/or convex M-shaped segments joined together by loops. claim 2, before the step (f), further comprising a step of providing an additional strip of rubber film to

A stent may be constructed comprising a plurality of interconnected circumferential bands each bands comprising a plurality of concave and/or convex M-shaped segments joined together by loops. claim 2, before the step (f), further comprising a step of providing an additional strip of rubber film to stick around said semi-finished ball carcass in such a manner that said rubber film extends across all said rubber strips. 4. The method as recited in claim 2 wherein, in the step (f), under each of said cushion panels, said inner rubber layer of said cushion panel melts into said winding threads of said winding thread layer and fuses to said rubber bladder integrally, and that along each of said rubber strips, said rubber film, said rubber strips, and said inner rubber layers of said adjacent cushion panels melt into said winding threads of said winding thread layer and fuse to said rubber bladder to form said ball carcass. 5. The method as recited in claim 3 wherein, in the step (f), under each of said cushion panels, said inner rubber layer of said cushion panel melts into said winding threads of said winding thread layer and fuses to said rubber bladder integrally, and that along each of said rubber strips, said rubber film, said rubber strips, and said inner rubber layers of said adjacent cushion panels melt into said winding threads of said winding thread layer and fuse to said rubber bladder to form said ball carcass. 6. The method as recited in claim 1 wherein said inner rubber layer and said outer rubber layer have a thickness of less than 1 mm and said foaming layer has a thickness of 1 mm to 2 mm. 7. The method as recited in claim 2 wherein said inner rubber layer and said outer rubber layer have a thickness of less than 1 mm and said foaming layer has a thickness of 1 mm to 2 mm. 8. The method as recited in claim 4 wherein said inner rubber layer and said outer rubber layer have a thickness of less than 1 mm and said foaming layer has a thickness of 1 mm to 2 mm. 9. The method as recited in claim 1 wherein, in the step (b), said foaming layer is made of sponge rubber which is made by heating a kind of rubber contained foaming agent inside a mold. 10. The method as recited in claim 2 wherein, in the step (b), said foaming layer is made of sponge rubber which is made by heating a kind of rubber contained foaming agent inside a mold. 11. The method as recited in claim 4 wherein, in the step (b), said foaming layer is made of sponge rubber which is made by heating a kind of rubber contained foaming agent inside a mold. 12. The method as recited in claim 9 wherein said sponge rubber is made by adhering said inner rubber layer and said outer rubber layer on both side surfaces of a foaming rubber containing a foaming agent, and then heating said foaming rubber with said inner and outer rubber layers adhered thereon in a plate mold until gas is released from said foaming rubber to produce air meshes and increase thickness to form said sponge rubber with uniform thickness and even softness. 13. The method as recited in claim 11 wherein said sponge rubber is made by adhering said inner rubber layer and said outer rubber layer on both side surfaces of a foaming rubber containing a foaming agent, and then heating said foaming rubber with said inner and outer rubber layers adhered thereon in a plate mold until gas is released from said foaming rubber to produce air meshes and increase thickness to form said sponge rubber with uniform thickness and even softness. 14. The method as recited in claim 1 wherein a width of each of said gap is between 10 mm to 15 mm.