Writing instruments with rotatable wheel actuator
US4917519A · kind A · utility
15Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1989 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Feb 22, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K24/06
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A writing instrument has a retraction mechanism of simple, inexpensive construction comprising a wheel (5) rotatably mounted on the barrel (1) and to which the trailing end of the writing unit (8) is connected by a pivot having its axis spaced from the rotation axis. In the writing position of the writing tip (9), the wheel abuts a stop defined either by the writing unit or the barrel to support the writing pressure exerted against the writing tip. The rear end of the reservoir tube (10) can be formed for direct snap-fit connection to the wheel, and the wheel is a snap-fit in the barrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.