Writing instrument
US6039484A · kind A · utility
10Cited by
7References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Jun 22, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K21/20
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A writing instrument comprises a barrel provided with a tip element at the front thereof, a writing mechanism provided longitudinally movably within the barrel, a resilient element for biasing the writing mechanism backward, a knock member detachably mounted on the rear end of the writing mechanism, and a rattle-preventive means provided between a knock member and the barrel. The rattle of the knock member can be completely eliminated despite the presence of a clearance between parts such as between the knock member and the barrel or the tail crown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.