US4860481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid graphite rod tip
Assignee: Pure Fishing Inc
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Filing: 1988-04-15
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Granted: 1989-08-29
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Expires: 2008-04-15
Abstract
Abstract A flexible fishing rod is described having a cross section which tapers from a large butt end to a small tip end. The rod has a hollow section extending along the rod axis from the butt end to a solid tip section formed by compression of the pattern used to make the rod.
Inventors
- 👤 Harlan B. Christenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:20
CPC Classifications
A; A01; A01K; A01K87/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
293 words
A method for making a fishing rod having an exterior cross-section which tapers from a larger butt end to a smaller tip end, and having a hollow body section and a solid tip section, comprising: forming a shortened mandrel from a conventional mandrel, by removing a portion of a tapered tip end of the conventional mandrel that is slightly longer than the desired length of the solid tip section; aligning the shortened mandrel on a pattern sheet comprised of a fiber reinforced laminar resin material, said pattern having a tip end and a butt end, said butt end of the pattern cut for aligning with the butt end of the original full length of the conventional mandrel and the tip end cut for aligning with the tip end of the conventional mandrel; aligning the shortened mandrel along the pattern, with a butt end of the shortened mandrel generally adjacent the butt end of the pattern, the shortened mandrel extending longitudinally along the pattern and the tip end of the mandrel aligned adjacent the tip end of the pattern; aligning a dowel along the pattern in axial alignment with and spaced from the shortened mandrel and extending from the tip end of the mandrel along the pattern and beyond the tip end of the pattern; rolling the pattern around the axially aligned shortened mandrel and dowel such that the dowel extends beyond the tip end of the rolled pattern; withdrawing the dowel, thereby forming a hollow tip section in the tip end of the rod; wrapping the mandrel and pattern with an overlapping layer of tape, such that the overlapping tape layer compresses the hollow tip section of the pattern to form a solid tip section; and curing the rod and removing the mandrel.
Claim 2
Independent Claim
293 words
A method for making a fishing rod having an exterior cross-section which tapers from a larger butt end to a smaller tip end, and having a hollow body section and a solid tip section, comprising: forming a shortened mandrel from a conventional mandrel, by removing a portion of a tapered tip end of the conventional mandrel that is slightly longer than the desired length of the solid tip section; aligning the shortened mandrel on a pattern sheet comprised of a fiber reinforced laminar resin material, said pattern having a tip end and a butt end, said butt end of the pattern cut for aligning with the butt end of the original full length of the conventional mandrel and the tip end cut for aligning with the tip end of the conventional mandrel; aligning the shortened mandrel along the pattern, with a butt end of the shortened mandrel generally adjacent the butt end of the pattern, the shortened mandrel extending longitudinally along the pattern and the tip end of the mandrel aligned adjacent the tip end of the pattern; aligning a dowel along the pattern in axial alignment with and spaced from the shortened mandrel and extending from the tip end of the mandrel along the pattern and beyond the tip end of the pattern; rolling the pattern around the axially aligned shortened mandrel and dowel such that the dowel extends beyond the tip end of the rolled pattern; withdrawing the dowel, thereby forming a hollow tip section in the tip end of the rod; wrapping the mandrel and pattern with an overlapping layer of tape, such that the overlapping tape layer compresses the hollow tip section of the pattern to form a solid tip section; and curing the rod and removing the mandrel.
Claim 3
Dependent Claim
13 words
The method of claim 1, wherein the fibers in the pattern are graphite.
Claim 4
Dependent Claim
18 words
The method of claim 1, wherein the resin material in the pattern is a heat curable epoxy resin.
Claim 5
Dependent Claim
33 words
The method of claim 1 wherein a supplemental pattern is applied to provide a smooth transition surface in the portion of the rod between the tip of the shortened mandrel and the dowel.
Claim 6
Dependent Claim
94 words
A one-piece fishing rod of unitary construction formed from a fiber reinforced laminar resin material, the rod having a generally circular cross-section tapering from a large butt end to a small tip end, and having a hollow body section extending along the rod axis from the butt end to a solid tip section, said solid tip section being a unitary part of the rod and forming a smooth exterior profile therewith, said solid tip section providing improved compressive strength and impact resistance to the tip end of the rod, while maintaining the flexibility thereof.
Claim 7
Dependent Claim
94 words
A one-piece fishing rod of unitary construction formed from a fiber reinforced laminar resin material, the rod having a generally circular cross-section tapering from a large butt end to a small tip end, and having a hollow body section extending along the rod axis from the butt end to a solid tip section, said solid tip section being a unitary part of the rod and forming a smooth exterior profile therewith, said solid tip section providing improved compressive strength and impact resistance to the tip end of the rod, while maintaining the flexibility thereof.
Claim 8
Dependent Claim
22 words
The fishing rod according to claim 5, wherein the resin of the fiber-reinforced laminar resin material is a heat curable epoxy resin.
Claim 9
Dependent Claim
18 words
The fishing rod according to claim 5, wherein the fibers of the fiber-reinforced laminar resin material are graphite.
References Cited (Backward Citations)
US3835569A
Cited
US4015360A
Cited
US4043074A
Cited
US4061806A
Cited
US4155791A
Cited
US4422259A
Cited
US4355061A
Cited
US4464856A
Cited
GB2119611A
Cited
US4685241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |