Ballpoint pen nib provided with a stem with communication flutes
US7004661B2 · kind B2 · utility
0Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 13, 2003 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Feb 13, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43M11/085
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A ballpoint pen (1) nib (2) housing the ball (3) and having a stem (6), at least one part of which is inserted coaxially into a hole (5) in the lower end (4f) of a hollow barrel (4) forming part of the ballpoint pen (1). On the outer surface of the at least one part of the stem are formed one or more flutes (7i) that extend parallel to the longitudinal axis (Z—Z) of the stem (6) for a length (L) equal to or greater than the axial length (H) of the hole (5) in such a way that the opposite ends (D, E) of the abovementioned flutes (7i) are outside of it and on opposite sides with respect to it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.