Writing instrument
US-11148460-B2 · Oct 19, 2021 · US
Writing implement
US2021237502A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021237502-A1 |
| Application number | US-201917059365-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 28, 2019 |
| Priority date | May 28, 2018 |
| Publication date | Aug 5, 2021 |
| Grant date | — |
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- Title
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- Abstract
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- Assignees and inventors
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- Key dates
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
Provided is a writing implement having a pen tip that can achieve excellent ink outflow performance and an increase in the effective area of a viewer portion allowing recognition of the writing direction, relative to the whole pen tip. The writing implement is a writing implement A which includes a pen tip 20 feeding ink from a writing implement body 10 and having a viewer portion through which the writing direction can be recognized, and is characterized in that the pen tip 20 is configured of, a least, a writing part 30 and a holding body 40 having a viewer portion 43, and the holding portion 40 has a sheet-shaped ink feeder 25 formed with slits or bumps on the surface and inside thereof to produce a capillary action.
First claim
Opening claim text (preview).
1 . A writing implement comprising a pen tip feeding ink from a writing implement body and having a viewer portion through which the writing direction can be recognized, characterized in that the pen tip is configured of, a least, a writing part and a holding body having a viewer portion, and the holding portion has a sheet-shaped ink feeder formed with slits or bumps on the surface and inside thereof to produce a capillary action. 2 . The writing implement according to claim 1 , wherein the slits or the bumps formed in the sheet-shaped ink feeder has a width of 10 to 100 μm. 3 . The writing implement according to claim 1 , wherein the sheet-shaped ink feeder is arranged inside the peripheral end surface of the holding body.
Assignees
Inventors
Classifications
- B43K1/12Primary
Writing-points comprising fibres; Felt pads · CPC title
Porous nibs (B43K1/12 takes precedence) · CPC title
Capillary nibs · CPC title
with writing-points comprising capillary material · CPC title
with optical equipment, e.g. magnifier, viewer · CPC title
Patent family
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2021237502A1 cover?
- Provided is a writing implement having a pen tip that can achieve excellent ink outflow performance and an increase in the effective area of a viewer portion allowing recognition of the writing direction, relative to the whole pen tip. The writing implement is a writing implement A which includes a pen tip 20 feeding ink from a writing implement body 10 and having a viewer portion through which…
- Who is the assignee on this patent?
- Mitsubishi Pencil Co
- What technology area does this patent fall under?
- Primary CPC classification B43K1/12. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Aug 05 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).