Fishing rod
AssigneeD-Flex Limited
InventorChristopher John Underwood
Life of this patent
Estimating the term…
Abstract
A fishing rod, and a method of manufacturing a tubular structure such as a fishing rod. The fishing rod extends within a plane (210). At least a portion of the rod (202) has a flexural rigidity in a first direction (B) within the plane different from the flexural rigidity in the opposite direction (A) within the plane. The difference in flexural rigidity between said directions is at least 5% of the value of the flexural rigidity in the first direction.
Claims10
A method of manufacturing a tubular structure extending within a plane, comprising the step of forming a tubular structure with at least a portion of the tubular structure having a flexural rigidity in a first direction within the plane different from a flexural rigidity in an opposite direction to the first direction within the plane, the difference in flexural rigidity between said directions being at least 5% of a value of the flexural rigidity in the first direction, and wherein a cross-section of said portion is formed in a shape that is a non-circular curve of constant width.
A method of manufacturing a tubular structure, comprising:
- wrapping a flexible material around a mandrel;
- curing the material to form a tubular structure;
- and
- removing the mandrel from the tubular structure,
- wherein the mandrel comprises a non-circular cross-section that is a curve of constant width.
Dependencies are inferred from the claim text.