Writing instrument having an ink balance mechanism
US9266380B2 · kind B2 · utility
1Cited by
4References
11Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 7, 2014 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Jan 7, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K8/08
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A writing instrument is provided with a barrel including a bottom opening; a partition disposed in the barrel to divide the barrel into an upper ink reservoir filled with ink and a lower storage filled with an absorbent material; a writing member partially disposed in the absorbent material and extending out of the bottom opening; and a conveying line disposed through the partition. The conveying line includes a venting channel and an ink conveying channel. Each of the venting channel and the ink conveying channel communicate with both the ink and the absorbent material. A smooth writing can be carried out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.