Guide member for fishing line

Patent metadata

Field	Value
Publication number	US-11089769-B2
Application number	US-201615778126-A
Country	US
Kind code	B2
Filing date	Nov 25, 2016
Priority date	Nov 28, 2015
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

A guide member for a fishing line including an alumina ceramic including Ti and Al, a content of Ti being not less than 0.5 mass % in terms of TiO 2 , a content of Al being not less than 92 mass % in terms of Al 2 O 3 , and a main phase of the alumina ceramic being alumina crystals, wherein a content ratio of aluminas crystal with an aspect ratio of not less than 2 within the alumina crystals is not less than 15%.

First claim

The invention claimed is:

1. A guide member for a fishing line; wherein the guide member comprises:
an alumina ceramic including Ti and Al, wherein a content of Ti is not less than 0.5 mass % in terms of TiO 2 , wherein a content of Al is not less than 92 mass % in terms of Al 2 O 3 , and wherein a main phase of the alumina ceramic is alumina crystals, wherein
a content ratio of alumina crystal with an aspect ratio of not less than 5 within the alumina crystals is not greater than 10%;
wherein the guide member comprises a radial crushing strength of at least 410 MPa.

2. The guide member for a fishing line according to claim 1 , wherein a maximum aspect ratio of the alumina crystals is less than 5.

3. The guide member for a fishing line according to claim 1 , wherein a standard deviation of aspect ratios of the alumina crystals is not greater than 0.6.

4. The guide member for a fishing line according to claim 1 , wherein a degree of circularity of the alumina crystals is not less than 0.55 and not greater than 0.70.

5. The guide member for a fishing line according to claim 1 , wherein an average crystal particle size of the alumina crystals is not less than 1.8 μm and not greater than 3.0 μm.

6. The guide member for a fishing line according to claim 1 , wherein
a lightness factor in CIE 1976 L*a*b* color space by a diffuse reflection process is not less than 15 and not greater than 25,
a psychometric chroma coordinate a* is not less than 2 and not greater than 7, and
a psychometric chroma coordinate b* is not less than −25 and not greater than −8.

7. A guide member for a fishing line; wherein the guide member comprises:
an alumina ceramic including Ti and Al, wherein a content of Ti is not less than 0.5 mass % in terms of TiO 2 , wherein a content of Al is not less than 92 mass % in terms of Al 2 O 3 , and wherein a main phase of the alumina ceramic is alumina crystals;
wherein a maximum aspect ratio of the alumina crystal is 5; and
wherein the guide member comprises a radial crushing strength of not less than 410 MPa.

Assignees

• Kyocera Corp

Inventors

• Mikaki Shunji

Classifications

• C04B2235/3225

  Yttrium oxide or oxide-forming salts thereof · CPC title

• C04B35/64

  Burning or sintering processes (C04B33/32 takes precedence {; powder metallurgy B22F}) · CPC title

• C04B2235/3244

  Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof · CPC title

• C04B2235/3241

  Chromium oxides, chromates, or oxide-forming salts thereof · CPC title

• C04B35/119

  with zirconium oxide · CPC title