Multi-element writing instrument
US4236418A · kind A · utility
3Cited by
5References
4Claims
0Family size
Inventor
Key dates
| Filing date | Sep 8, 1978 |
| Grant date | Dec 2, 1980 |
| Priority date | — |
| Expiry date | Sep 8, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1856
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A multi-element writing instrument is disclosed for use in computer-operated plotters or similar graphics systems. Successive applications of a linear force applied along the axis of the instrument are converted to rotary motion which is employed to select successive elongate writing elements normally positioned at a uniform radial spacing from the axis of the writing instrument. Each selected element is displaced in a substantially axial direction a distance sufficient to extend the writing point of the element through the exit opening of the instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.