Fishing rod
AssigneeTate Angling Tools & Equipment, LP
InventorTrent S. Tate
Life of this patent
Estimating the term…
Abstract
A fishing rod that includes an elongated, tapered rod blank at least a portion of which is quadrilateral in cross section, the quadrilateral portion of the rod blank diminishing in cross-sectional area toward a tip end of the rod blank, the quadrilateral portion of the rod blank comprising a sandwich-structured composite of a core disposed between facings, the core less dense than the facings, the quadrilateral portion of rod blank less stiff in a casting direction than transverse to the casting direction; fishing line guides mounted at intervals along the length of the rod blank; a reel seat mounted at the base end of the rod blank; and a handle mounted at the base end of the rod blank adjacent to the reel seat.
Claims9
A fishing rod comprising:
- an elongated, tapered rod blank at least a portion of which is quadrilateral in cross section, the quadrilateral portion of the rod blank diminishing in cross-sectional area toward a tip end of the rod blank, the quadrilateral portion of the rod blank comprising a sandwich-structured composite of a core disposed between facings, the core less dense than the facings, the quadrilateral portion of rod blank less stiff in a casting direction than transverse to the casting direction;
- fishing line guides mounted at intervals along the length of the rod blank;
- a reel seat mounted at the base end of the rod blank;
- and
- a handle mounted at the base end of the rod blank adjacent to the reel seat;
- wherein
- the quadrilateral portion of the rod blank is characterized under static load in the casting direction by
- y
- =
- 3
-
- P
-
-
- cot
- 3
-
- θ
-
- cos
-
- φ
- c
-
- cos
-
- φ
- f
- 8
-
- (
- E
- c
-
- sin
-
- φ
- c
-
- cos
-
- φ
- f
- +
- 2
-
- E
- f
-
- cos
-
- φ
- c
-
- sin
-
- φ
- f
- )
-
- (
- x
- L
-
- (
- L
- -
- x
- )
- )
- ,
- where
- y is deflection in the casting direction of a point on the rod blank with respect to a point x on a central axis,
- L is the length of the rod blank,
- P is a force applied in the casting direction by a load weight at the tip end of the rod,
- θ is an angle between a vertical center plane of the rod blank and each side of the rod blank,
- φc is an angle between a horizontal center plane of the rod blank and the top and bottom of the core,
- φf is an angle between the top and bottom of the core and the outer surfaces of the facings,
- Ec is a modulus of elasticity of the core, and
- Ef is a modulus of elasticity of the facings.
Dependencies are inferred from the claim text.