JPS58130791U - Shape pencil lead protection tube - Google Patents

Shape pencil lead protection tube

Info

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
Application number
JP2826882U
Other languages
Japanese (ja)
Inventor
浩之 志賀
酒井　和雄
Original Assignee
ぺんてる株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ぺんてる株式会社 filed Critical ぺんてる株式会社
Priority to JP2826882U priority Critical patent/JPS58130791U/en
Publication of JPS58130791U publication Critical patent/JPS58130791U/en
Pending legal-status Critical Current

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

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] アルミナ、マグネシア、シリカ等の酸化物、或いは窒化
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.
JP2826882U 1982-02-26 1982-02-26 Shape pencil lead protection tube Pending JPS58130791U (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727372B2 (en) * 1976-07-30 1982-06-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727372B2 (en) * 1976-07-30 1982-06-10

Cited By (1)

* Cited by examiner, † Cited by third party
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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