Four part ball point pen mechanism
US5518330A · kind A · utility
7Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1994 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Jul 26, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K24/06
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A four part writing instrument mechanism includes a one piece synthetic anchor bushing and a one piece synthetic cartridge shuttle which are axially movable with respect to each other. A metal driver with a helical section engages a groove in the shuttle for moving the shuttle axially. The driver is axially fixed but rotatable on the anchor bushing. A writing cartridge, such as a ball point pen cartridge, is fixed to the shuttle and has a writing point which is extendable from and retractable into an opposite end of the anchor bushing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.