JPS58130791U - Shape pencil lead protection tube - Google Patents
Shape pencil lead protection tubeInfo
- Publication number
- JPS58130791U JPS58130791U JP2826882U JP2826882U JPS58130791U JP S58130791 U JPS58130791 U JP S58130791U JP 2826882 U JP2826882 U JP 2826882U JP 2826882 U JP2826882 U JP 2826882U JP S58130791 U JPS58130791 U JP S58130791U
- Authority
- JP
- Japan
- Prior art keywords
- protection tube
- lead protection
- pencil lead
- shape pencil
- alumina
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面は本考案の実施例を示すもので、第1図は本考案に
よる芯保護管を用いたシャープペンシルの要部縦断面図
である。
1・・・芯保護管。The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view of a main part of a mechanical pencil using a lead protection tube according to the present invention. 1...Core protection tube.
Claims (1)
珪素、窒化硼素等の窒化物、或いは炭化珪素等の炭化物
、或いは硼化チタン、硼化ジルコニウム等の硼化物、或
いは硅化チタン、硅化ジルコニラ”4の硅化物、或いは
アルミナーネグネシア等のスピネルよりなるセラミック
より形成されることを特徴とするシャープペンシルの芯
保護管。Oxides such as alumina, magnesia, and silica; nitrides such as silicon nitride and boron nitride; carbides such as silicon carbide; borides such as titanium boride and zirconium boride; A lead protection tube for a mechanical pencil, characterized in that it is made of ceramic made of silicide or spinel such as alumina negnesia.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2826882U JPS58130791U (en) | 1982-02-26 | 1982-02-26 | Shape pencil lead protection tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2826882U JPS58130791U (en) | 1982-02-26 | 1982-02-26 | Shape pencil lead protection tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58130791U true JPS58130791U (en) | 1983-09-03 |
Family
ID=30040129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2826882U Pending JPS58130791U (en) | 1982-02-26 | 1982-02-26 | Shape pencil lead protection tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58130791U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015104882A (en) * | 2013-11-29 | 2015-06-08 | ぺんてる株式会社 | Mechanical pencil |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5727372B2 (en) * | 1976-07-30 | 1982-06-10 |
-
1982
- 1982-02-26 JP JP2826882U patent/JPS58130791U/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5727372B2 (en) * | 1976-07-30 | 1982-06-10 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015104882A (en) * | 2013-11-29 | 2015-06-08 | ぺんてる株式会社 | Mechanical pencil |
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