Marker pen
US6503015B1 · kind B1 · utility
4Cited by
5References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 30, 2001 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Aug 30, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K8/06
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A marking pen has a hollow shank 10 that supports an applicator 11 having a marking face 12. The applicator part 16 extends through a channel formed by a seal 14 into and sealingly connected to a liquid ink reservoir 13. Small air vent passages 17 and 18 provided around the applicator part 15 lead to a buffer zone 20 partially filled with porous material 21. Air may pass during use of the pen into the buffer zone but liquid ink will not flow along the passages and out of the pen. The configuration enables free liquid ink to be stored in the reservoir inside the shank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.