JPH03126684U - - Google Patents
Info
- Publication number
- JPH03126684U JPH03126684U JP3485090U JP3485090U JPH03126684U JP H03126684 U JPH03126684 U JP H03126684U JP 3485090 U JP3485090 U JP 3485090U JP 3485090 U JP3485090 U JP 3485090U JP H03126684 U JPH03126684 U JP H03126684U
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- protection tube
- core protection
- pencil
- view
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 claims 5
- 230000001681 protective effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Description
第1図は本考案の実施例を示す要部縦断面図、
第2図、第3図は芯保護管の第1実施例を示すも
ので、第2図は平面図、第3図は第2図のA−A
断面図、第4図、第5図は芯保護管の第1実施例
に使用するダイスを示すもので、第4図は平面図
、第5図は第4図のB−B断面図、第6図は第1
実施例の芯保護管の突起形成工程を示す図、第7
図、第8図は芯保護管の第2実施例を示すもので
、第7図は平面図、第8図は第7図のC−C断面
図、第9図、第10図は芯保護管の第2実施例に
使用するダイスを示すもので、第9図は平面図、
第10図は第9図のD−D断面図、第11図、第
12図は芯保護管の第3実施例を示すもので、第
11図は平面図、第12図は第11図のE−E断
面図、第13図、第14図は芯保護管の第3実施
例に使用するダイスを示すもので、第13図は平
面図、第14図は第13図のF−F断面図、第1
5図は第3実施例の芯保護管の突起形成工程を示
す図、第16図は芯保護管の実施例を示す平面図
、第17図は芯保護管の更に他の実施例を示す平
面図である。
5……芯保護管、5a……突起、7,8……ダ
イス、7a……ダイスの突起。
FIG. 1 is a vertical sectional view of the main part showing an embodiment of the present invention.
Figures 2 and 3 show the first embodiment of the core protection tube, where Figure 2 is a plan view and Figure 3 is A-A in Figure 2.
The sectional view, FIG. 4, and FIG. 5 show the die used in the first embodiment of the core protection tube. FIG. 4 is a plan view, and FIG. Figure 6 is the first
Figure 7 showing the protrusion forming process of the core protection tube in the example.
8 shows a second embodiment of the core protection tube, FIG. 7 is a plan view, FIG. 8 is a sectional view taken along line C-C in FIG. 7, and FIGS. 9 and 10 are core protection tubes. The die used in the second embodiment of the tube is shown, and FIG. 9 is a plan view;
Fig. 10 is a sectional view taken along line DD in Fig. 9, Figs. 11 and 12 show the third embodiment of the core protection tube, Fig. 11 is a plan view, and Fig. 12 is a sectional view of Fig. 11. EE-E sectional view, FIGS. 13 and 14 show the die used in the third embodiment of the core protection tube, FIG. 13 is a plan view, and FIG. 14 is a FF cross-section of FIG. Figure, 1st
FIG. 5 is a diagram showing the protrusion forming process of the core protection tube of the third embodiment, FIG. 16 is a plan view showing an embodiment of the core protection tube, and FIG. 17 is a plan view showing still another embodiment of the core protection tube. It is a diagram. 5... Core protection tube, 5a... Protrusion, 7, 8... Dice, 7a... Dice protrusion.
Claims (1)
であつて、前記芯保護管は、円形パイプを、内方
に突起を有する円形ダイスに挿入後、圧延し、更
に内方に突起を有しない円形ダイスを用い圧延す
ることにより芯保護管内面に突起を形成したもの
であるシヤープペンシル。 (2) 先端に芯保護管を有するシヤープペンシル
であつて、前記芯保護管は、角形のパイプを、内
断面角形のダイスに挿入後、圧延し、更に円形の
ダイスを用い圧延することにより芯保護管内面に
突起を形成したものであるシヤープペンシル。[Claims for Utility Model Registration] (1) A sharpening pencil having a core protection tube at the tip, which is formed by inserting a circular pipe into a circular die having an inward protrusion, rolling it, and then rolling it. A sharp pencil that has protrusions formed on the inner surface of the core protection tube by rolling using a circular die that does not have inward protrusions. (2) A sharpening pencil having a core protection tube at the tip, wherein the core protection tube is formed by inserting a rectangular pipe into a die with a rectangular inner cross section, rolling it, and then rolling it using a circular die. A sharp pencil with protrusions formed on the inside of the protective tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990034850U JP2530089Y2 (en) | 1990-03-31 | 1990-03-31 | mechanical pencil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990034850U JP2530089Y2 (en) | 1990-03-31 | 1990-03-31 | mechanical pencil |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03126684U true JPH03126684U (en) | 1991-12-20 |
JP2530089Y2 JP2530089Y2 (en) | 1997-03-26 |
Family
ID=31539686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990034850U Expired - Fee Related JP2530089Y2 (en) | 1990-03-31 | 1990-03-31 | mechanical pencil |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2530089Y2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009023579A (en) * | 2007-07-23 | 2009-02-05 | Ihi Marine United Inc | Power feeding package for vessel |
JP2009067301A (en) * | 2007-09-14 | 2009-04-02 | Shin Kurushima Dockyard Co Ltd | Power receiving equipment of automobile carrying vessel |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1151874A1 (en) * | 1999-10-15 | 2001-11-07 | Pentel Kabushiki Kaisha | Mechanical pencil and production method for its lead protection member |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5936469A (en) * | 1982-08-23 | 1984-02-28 | Fujitsu Ltd | System for restoring telephone line |
-
1990
- 1990-03-31 JP JP1990034850U patent/JP2530089Y2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5936469A (en) * | 1982-08-23 | 1984-02-28 | Fujitsu Ltd | System for restoring telephone line |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009023579A (en) * | 2007-07-23 | 2009-02-05 | Ihi Marine United Inc | Power feeding package for vessel |
JP2009067301A (en) * | 2007-09-14 | 2009-04-02 | Shin Kurushima Dockyard Co Ltd | Power receiving equipment of automobile carrying vessel |
JP4558773B2 (en) * | 2007-09-14 | 2010-10-06 | 株式会社新来島どっく | Power receiving equipment for car carriers |
Also Published As
Publication number | Publication date |
---|---|
JP2530089Y2 (en) | 1997-03-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |