Expandable writing instrument
US6273627A · kind A · utility
47Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2000 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Oct 16, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K24/08
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An expandable pen has a pen barrel with an expanding middle section. The pen barrel holds a retractable ball point pen refill cartridge When the pen is expanded, the writing tip of the refill is extended from a retracted position inside the pen barrel to a writing position, while the barrel becomes full length for comfort when writing. The pen may be collapsed for storage, which simultaneously retracts the writing tip inside the pen barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.