Writing instrument
US4065215A · kind A · utility
9Cited by
1References
4Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Jan 14, 1976 |
| Grant date | Dec 27, 1977 |
| Priority date | — |
| Expiry date | Jan 14, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K1/003
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An improved writing nib for a writing instrument comprising a cylindrical casing having an ink reservoir therein. Said nib has an inner capillary conduit which forms, in a transverse cross section of the nib, at least one straight slit which extends from the center of the cross section toward the outer periphery of said nib substantially in the radial direction of the cross section, and forms a plurality of radially spaced-apart arc shaped slits which are coaxial with each other about said center, a part of each of said arc shaped slits being interconnected with said straight slit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.