Stock material or miscellaneous articles – Structurally defined web or sheet – Longitudinal or transverse tubular cavity or cell
Patent
1991-10-08
1993-07-20
Seidel, Richard K.
Stock material or miscellaneous articles
Structurally defined web or sheet
Longitudinal or transverse tubular cavity or cell
428364, 428374, 43 181, B32B 108
Patent
active
052291871
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to rods and in particular to rods produced by a method which enables production of a rod with a desired set of characteristics when flexed.
BACKGROUND OF THE INVENTION
Flexible rods find applications in a variety of fields, for example, as fishing rods, which rods are tailored to suit particular applications. Stiffer rods are preferred for heavy fish, while very flexible rods are utilised in fly casting. A variety of materials and geometries are employed in these applications. In fishing rod construction, cylindrical section materials both hollow and solid have been used. Round materials pose problems in mounting thereon an aligned set of line guides. Some of the lightweight, flexible materials, such as hollow carbon tube, have poor crush characteristics and poor torsional performance so that the application of fishing line guides to them poses problems. The conventional technique involves binding a wire-form bracket firmly to the rod. Too much pressure can crush a carbon filament tube. Attempting to realign a guide by twisting it about the rod axis can result in a fracture. Other rods less prone to these problems suffer disadvantages in less desirable flexing characteristics. Construction of tube form rods with tapers is not easy.
U.S. Pat. No. 1,932,986 to Powell shows a split cane technique for rod assembly from a number of canes. A rod of this type is provided with a taper by reduction of the wedge section dimensions over the length of the elements of the assembly.
U.S. Pat. No. 4,582,758 to Bruce et al shows a development of the above utilising fibre resin reinforced plastic techniques. The cane wedge is duplicated in reinforced plastic and assembled in much the same way.
While a great variety of materials and layup techniques have been tried in the construction of rods, there is scope for improvements. It is desirable to establish a fabrication technique that may be applied to produce a range of rods each with preselected parameters for particular uses.
OBJECTS OF THE INVENTION
It is an object of the present invention to provide a rod fabrication technique that enables rods to be produced with predetermined properties utilising an assembly of preformed members.
Other objects, and various advantages of the invention will hereinafter become apparent.
OUTLINE OF THE INVENTION
The invention achieves its objects in providing a rod comprising
an assembly of elongate members each having abutment faces whereby each elongate member contacts its neighbor;
adjacent elongate members being joined together at their abutment faces;
characterised in that:
the elongate members have a generally T-shape cross-section with a flange capping a web section;
the assembly combines all the flanges together to establish a polygonal cross-section; and
the web sections of each elongate member being extended in a direction towards a common axis.
The invention also provides a rod comprising:
a plurality of elongate members;
the elongate members being arranged in an assembly about a central axis with at least one mating surface between adjoining elongate members; and
the elongate members being bonded at their mating surfaces with each elongate member being bonded to its two neighbors about the central axis;
characterised in that
each elongate member comprises a composite body formed with at least one reinforcing layer with fibres or filaments of reinforcing material extended therethrough in a predetermined pattern,
the predetermined pattern in planar form comprising a first array of said fibres or filaments extended parallel to the length of the elongate member, a second array of fibres or filaments arrayed across said first array and a third array, of fibres or filaments being arrayed oppositely to the second array, relative to the first array, to cut across the first and second arrays: and
the reinforcing layer being folded or curved about an axis which is parallel to the central axis and the axis of the first array.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will no
REFERENCES:
patent: 1811419 (1931-06-01), Anderson
patent: 1932986 (1933-10-01), Powell
patent: 2364849 (1944-12-01), Ibbotson et al.
patent: 2537488 (1951-01-01), Stoner
patent: 4083140 (1978-04-01), Van Auken et al.
patent: 4144115 (1979-03-01), Sundberg
patent: 4582758 (1986-04-01), Bruce et al.
patent: 4759147 (1988-07-01), Pirazzini
patent: 5077113 (1991-12-01), Kakihara
Hansen Kenneth J.
McGinn Designer Rods Pty. Ltd.
Seidel Richard K.
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