Fishing – trapping – and vermin destroying – Fishing – Rod
Reexamination Certificate
1999-01-27
2001-02-27
Ark, Darren W. (Department: 3643)
Fishing, trapping, and vermin destroying
Fishing
Rod
C043S018500, C043S024000
Reexamination Certificate
active
06192615
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a through-type or interline-type fishing rod.
The through-type fishing rod is designed so that a fishing line is passed through the inside of the rod. Therefore, the fishing rod of this type requires a fishing line guiding structure inside the rod for smoothly guiding the fishing line while bearing against the wearing caused as a consequence of the sliding contact between the fishing line and the inside of the rod. The fishing line guide structure is constructed using anti-friction and high-strength materials, but the anti-friction and high-strength material is low in water-repellent property.
It is known that water drops staying in or adhering onto the inside of the rod adversely increase the friction resistance during fishing. Therefore, a water-repellent structure is required in order to prevent the water drops from staying in the inside of the rod. The material for the water-repellent structure is, however, low in strength and anti-friction property.
SUMMARY OF THE INVENTION
A primary object of the present invention is to provide a novel structure for a through-type or interline-type fishing rod, which can maintain both anti-friction and water-repellent properties required.
The present invention provides a through type fishing rod comprising:
a hollow rod pipe having an internal surface and an external surface;
a plurality of line guide protrusions protruding radially inwardly from the internal surface, each of the line guide protrusions having front and rear ends continuous to the internal surface in a longitudinal direction of the rod pipe, an apex the most distanced from the internal surface radially of the rod pipe, and front and rear slopes extending respectively from the apex to the front and rear ends; and
a water-repellent layer extending continuously between adjacent two of the line guide protrusions, the water-repellent layer entirely covering at least the rear slope and rear end of a forwardly located one of the adjacent line guide protrusions, the internal surface between the rear end of the forwardly located one and the front end of a rearwardly located one of the adjacent line guide protrusions; and the front end and front slope of the rearwardly located one.
The apices of the adjacent two line guide protrusions may be exposed from the water-repellent layer. Alternatively, the apices of the adjacent two line guide may be covered by the water-repellent layer.
The water-repellent property is exhibited at any longitudinal and circumferential portions of the interior of rod pipe through which a fishing line is passed. This can prevent the water drops from staying in the interior of the rod pipe, thereby improving the line guiding property. That is, the friction-less line guiding can be achieved.
The line guide protrusions define a line guide surface at their apices in cooperation with the water-repellent layer. During fishing, the line guide surface guides a fishing line while being brought into a point contact with the fishing line. Thus, the friction-less line guiding ability can be further enhanced.
Even if the water-repellent layer at the apex of the line guide protrusion is worn out, the exposed apex of the line guide protrusion has the sufficient anti-friction property to maintain the contour of the line guide protrusion, so that the point contact between the apex (or line guiding surface) and the fishing line, which is required for the friction-less line guiding ability, can be maintained for a long time of the use.
The present invention further provides a through-type fishing rod comprising a tube made of a fiber-reinforced plastic having provided on the inner surface thereof a guide for a line, wherein
the guide comprises a core part and a water-repellent part which is integrally provided to cover at least the lower half (radially outer half) of the height of the core part on the top side and/or the butt side of the core part,
at least the top of the core part is made of a material having higher wear resistance than the water-repellent part, and
the water-repellent part is thicker at the foot of the core part than at a position farther from the foot in the longitudinal direction of the rod and at a position nearer to the top of the core part.
It is preferable that the water-repellent part be provided on at least the butt side of the core part.
Since at least the top of the guide, on which a line is guided, is formed of a material having higher wear resistance than the water-repellent part, even if the water-repellent part covering the core part of the guide wears down, the guide retains its durability. At least the lower half on at least one side of the core part is covered with the water-repellent part, that is, it is only the top of the core part and its vicinities that may not be covered with the water-repellent part. Therefore, water drops hardly collect at the foot of the guide. If a guide has a steep slope, even being covered with a water-repellent layer, water drops are apt to collect at the foot. In the present invention, because the water-repellent part is thickest at the foot than at any other parts thereby making the slope gentler, water drops hardly gather at the foot. In addition, the water-repellent part at the foot keeps its shape against repetition of cleaning owing to its sufficient thickness, assuring sufficient duration of water repellency at the most important part.
While a line is reeled out, water having entered the inside of the rod moves toward the top side and gather at the rear (butt side) of the guide. Therefore, in order to prevent water drops from gathering it is more effective to provide the water-repellent part on at least the butt side of the guide.
The present invention further provides a through-type fishing rod comprising a tube made of a fiber-reinforced plastic (hereinafter abbreviated as FRP) having provided on the inner surface thereof a guide for a fishing line, wherein the guide has a plurality of projections arrayed in the longitudinal direction of the rod, and a layer comprising a fluoro resin matrix containing fluoro resin particles is provided on the inner surface of said tube between every adjacent foot of said guides.
In a preferred embodiment, the guide is a spiral guide made of a fiber-reinforced plastic, and the layer is provided between every adjacent projections and is thicker at the feet of the projections than at a position farther from the feet.
According to the present invention, the layer exhibits improved water repellency because both the matrix and the particles incorporated therein are fluoro resins. Even if the particles projecting over the surface of the layer are worn by friction with a line, the water repellency can be maintained because the matrix is a fluoro resin. Even if the fluoro resin layer has weak adhesion to the inner surface of the tube, it is durable and hardly comes off since it is protected from the friction with a line by the projections.
A fishing line is let out with looseness while touching not only the top but the sides of the guide. Whether the projection has vertical sides or sloping sides, water drops smoothly slide down the sides so that the necessity of forming a water-repellent layer on the sides is not much. It is the vicinities of the foot of the projection that requires water repellency the most. In the preferred embodiment of the present invention, since the layer is thicker at the foot, it shows water repellency of long duration even if somewhat worn by a line. Further, since the guide is a spiral guide made of an FRP, it is softer than annular guides made of ceramics, hardly affecting the flexibility in deflection of the rod.
The present invention further provides a through-type fishing rod comprising a tube having a projection on the inner surface thereof, wherein a layer comprising a synthetic resin matrix containing a water-repellent material and a wear-resistant material or a layer comprising a water-repellent matrix containing at least one of a wear-resistant material and a lubricating material
Ono Hiroyuki
Sugaya Eiji
Tsurufuji Tomoyoshi
Ark Darren W.
Daiwa Seiko Inc.
Liniak, Berenato, Longacre & White LLC
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