JPH0557920B2 - - Google Patents
Info
- Publication number
- JPH0557920B2 JPH0557920B2 JP60020780A JP2078085A JPH0557920B2 JP H0557920 B2 JPH0557920 B2 JP H0557920B2 JP 60020780 A JP60020780 A JP 60020780A JP 2078085 A JP2078085 A JP 2078085A JP H0557920 B2 JPH0557920 B2 JP H0557920B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- protrusions
- coil spring
- grooves
- spaced apart
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K21/00—Propelling pencils
- B43K21/02—Writing-core feeding mechanisms
- B43K21/08—Writing-core feeding mechanisms with the writing-cores fed by screws
Landscapes
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57873484A | 1984-02-09 | 1984-02-09 | |
US578734 | 1984-02-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60233000A JPS60233000A (ja) | 1985-11-19 |
JPH0557920B2 true JPH0557920B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1993-08-25 |
Family
ID=24314080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2078085A Granted JPS60233000A (ja) | 1984-02-09 | 1985-02-05 | シヤ−プペンシル |
Country Status (4)
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2210587B (en) * | 1987-10-20 | 1992-04-01 | Mitsubishi Pencil Co | A mechanical pencil. |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA463498A (en) * | 1950-03-07 | E. Wehn Charles | Mechanical pencil | |
DE478303C (de) * | 1929-06-22 | Huck Fa H | Schreibstift | |
US1627602A (en) * | 1921-04-29 | 1927-05-10 | Byron B Goldsmith | Mechanical pencil |
DE454572C (de) * | 1925-03-10 | 1928-01-12 | Felss Geb | Schreibstift |
CH266391A (de) * | 1948-03-09 | 1950-01-31 | Gyger Fritz | Minenstift. |
JPS5040329U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-08-06 | 1975-04-24 | ||
US4136980A (en) * | 1977-04-12 | 1979-01-30 | Tae Yoon Leem | Mechanical pencil |
JPS55144086U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1979-04-03 | 1980-10-16 |
-
1985
- 1985-01-10 CA CA000471881A patent/CA1219555A/en not_active Expired
- 1985-01-29 EP EP19850100907 patent/EP0151456B1/en not_active Expired
- 1985-01-29 DE DE8585100907T patent/DE3577825D1/de not_active Expired - Lifetime
- 1985-02-05 JP JP2078085A patent/JPS60233000A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60233000A (ja) | 1985-11-19 |
EP0151456B1 (en) | 1990-05-23 |
CA1219555A (en) | 1987-03-24 |
EP0151456A3 (en) | 1987-02-04 |
DE3577825D1 (de) | 1990-06-28 |
EP0151456A2 (en) | 1985-08-14 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term |