Cap for writing tool
US5911534A · kind A · utility
12Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1996 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Nov 18, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K23/126
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A cap, for a writing tool having on the outside of a cylindrical shell an elastic member made of a material different from that of the cap, including a plurality of longitudinal ribs formed on the inner peripheral surface of the cap in such a manner as to extend along the longitudinal direction of the cylindrical shell. The end portions of the plurality of the longitudinal ribs on the opening edge side of the cap are each formed in the shape of an arch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.