Sporting rod member using solid road
AssigneeDaiwa Seiko, Inc.
InventorsHiroyuki Ono, Atsushi Saito, Isao Ohta
Life of this patent
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Abstract
A sporting rod member which is strong against flexure, which is improved in tough and balance when it is flexed, and which can be made finer in thickness and lighter in weight. The sporting rod member uses a solid rod (8). The solid rod (8) is made up of a solid-state core member (10) and an outer layer (12) formed of fiber reinforced resin and disposed on the outside of the core member (10). In the solid rod (8), most of reinforcing fibers that are used in at least one of the solid-state core member and outer layer and that extend substantially in the axial direction thereof have a longitudinal elastic modulus of 40 ton/mm2 or higher.
Claims22
A sporting rod member using a solid rod, said solid rod comprising:
- a solid-state core member;
- and
- an outer layer formed of fiber reinforced resin and disposed on an outside of said core member,
- wherein most of reinforcing fibers used in at least one of said solid-state core member and said outer layer and extending substantially in an axial direction thereof have a longitudinal elastic modulus of 40 ton/mm2 or higher.
A sporting rod member using a solid rod, said solid rod comprising:
- a solid-state core member formed of fiber reinforced resin;
- and
- an outer layer formed of fiber reinforced resin and disposed on an outside of said core member,
- wherein an average longitudinal elastic modulus of axially extending reinforcing fibers of said core member varies in two or more stages in an axial direction thereof.
A sporting rod member using a solid rod, said solid rod comprising:
- a solid-state core member;
- an outer layer formed of fiber reinforced resin and disposed on an outside of said core member;
- and
- a hollow pipe member formed integrally with an end portion of said solid rod.
Dependencies are inferred from the claim text.