CA1219555A - Mechanical pencil - Google Patents
Mechanical pencilInfo
- Publication number
- CA1219555A CA1219555A CA000471881A CA471881A CA1219555A CA 1219555 A CA1219555 A CA 1219555A CA 000471881 A CA000471881 A CA 000471881A CA 471881 A CA471881 A CA 471881A CA 1219555 A CA1219555 A CA 1219555A
- Authority
- CA
- Canada
- Prior art keywords
- lead
- advance
- grooves
- spaced apart
- retract mechanism
- 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
Links
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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 | |
| US578,734 | 1984-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1219555A true CA1219555A (en) | 1987-03-24 |
Family
ID=24314080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000471881A Expired CA1219555A (en) | 1984-02-09 | 1985-01-10 | Mechanical pencil |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0151456B1 (enrdf_load_stackoverflow) |
| JP (1) | JPS60233000A (enrdf_load_stackoverflow) |
| CA (1) | CA1219555A (enrdf_load_stackoverflow) |
| DE (1) | DE3577825D1 (enrdf_load_stackoverflow) |
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 (enrdf_load_stackoverflow) * | 1973-08-06 | 1975-04-24 | ||
| US4136980A (en) * | 1977-04-12 | 1979-01-30 | Tae Yoon Leem | Mechanical pencil |
| JPS55144086U (enrdf_load_stackoverflow) * | 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 |
|---|---|
| EP0151456B1 (en) | 1990-05-23 |
| EP0151456A2 (en) | 1985-08-14 |
| JPH0557920B2 (enrdf_load_stackoverflow) | 1993-08-25 |
| JPS60233000A (ja) | 1985-11-19 |
| EP0151456A3 (en) | 1987-02-04 |
| DE3577825D1 (de) | 1990-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6056596A (ja) | 突出−引込機構を有する筆記具 | |
| CA1291724C (en) | Twist actuated writing instrument | |
| US4610557A (en) | Mechanical pencil with groove and lug structure | |
| EP0231521B1 (en) | Writing tool | |
| US3436160A (en) | Retractable writing instrument | |
| US5342135A (en) | Writing instrument having advance-retract mechanism | |
| US4899419A (en) | Pencil eraser assembly | |
| CA1219555A (en) | Mechanical pencil | |
| US5356232A (en) | Unified writing instrument and eraser dispenser | |
| US3917418A (en) | Resilient bushing for writing instruments and the like | |
| JP2989920B2 (ja) | 棒状物繰り出し容器及び筆記具 | |
| CN215850450U (zh) | 一种转动旋转笔 | |
| US2676568A (en) | Mechanical pencil | |
| US4544296A (en) | Disposable propel-repel pencil | |
| JPH0432309Y2 (enrdf_load_stackoverflow) | ||
| JP2555014Y2 (ja) | 棒状体操り出し装置 | |
| CN209121382U (zh) | 手推式眉笔 | |
| US3205864A (en) | Writing implement | |
| US2624313A (en) | Mechanical pencil and collet therefor | |
| CN210011506U (zh) | 权杖自动笔 | |
| CN108749400B (zh) | 正姿笔 | |
| CN219583826U (zh) | 一种伸缩式双头笔 | |
| JP2665397B2 (ja) | 筆記具用詰め替えユニット | |
| CN216135352U (zh) | 一种旋出式化妆笔 | |
| JP2000062389A (ja) | 棒状体繰り出し容器 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |