Ferrule joint for sectional fishing rod
AssigneeLamiglas Corporation
InventorsGary A. Loomis, Albert A. Fosha
Life of this patent
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Abstract
The ferrule joint includes a ferrule and an element telescopically insertable into the ferrule to frictionally interlock two rod sections. The ferrule and insertable element are integral with respective mating ends of the two rod sections. The ferrule joint is particularly suitable for use with sectional rods fabricated of tubular hollow core reinforced resin rod blanks which are of relatively small cross section and which employ stiff fibers such as boron or graphite as resin reinforcement.
Claims14
A fishing rod blank which comprises at least two flexible tapered reinforced resin hollow core shafts, an end of one shaft constituting a ferrule having a tapered bore extending inwardly from said one shaft end and an end of the other shaft providing an element insertable in said ferrule to frictionally interlock the shafts together, said ferrule including an outer concentric layer reinforcement made up of fiber reinforced resin superimposed on said one shaft about said bore as an external reinforcement to resist bending and prying forces to which said ferrule may be subjected, said element consisting of a hollow core end portion of said other shaft, an outer concentric layer enlargement made up of fiber reinforced resin superimposed on said other shaft adjacent said other shaft end portion, and an outer tapered contact surface formed by said other shaft end portion and said concentric layer enlargement for frictionally engaging said bore, the wall thickness between said outer contact surface and the hollow core of said other shaft progressively decreasing from said outer concentric layer enlargement toward said other shaft end but exceeding a minimum wall thickness sufficient to withstand applied forces without interior reinforcement, while permitting said ferrule and said element to flex with said shafts when interlocked together.
A ferrule joint for a fishing rod blank made up of two flexible tapered reinforced resin hollow core shafts, the ferrule joint comprising:
- a ferrule integral with the end of one shaft and having a tapered bore extending inwardly from said one shaft end, and an element integral with the end of the other shaft and insertable in said ferrule to frictionally interlock the shafts together, said ferrule including an outer concentric layer reinforcement made up of fiber reinforced resin superimposed on said one shaft about said bore as an external reinforcement to resist bending and prying forces to which said ferrule may be subjected, said element consisting of a hollow core end portion of said other shaft, an outer concentric layer enlargement made up of fiber reinforced resin superimposed on said other shaft adjacent said other shaft end portion, and an outer tapered contact surface formed by said other shaft end portion and said concentric layer enlargement for frictionally engaging said bore, the wall thickness between said outer contact surface and the hollow core of said other shaft progressively decreasing from said outer concentric layer enlargement toward said other shaft end but exceeding a minimum wall thickness sufficient to withstand applied forces without interior reinforcement, while permitting said ferrule and said element to flex with the shafts when interlocked together.
Dependencies are inferred from the claim text.