Drafting device for use with computers
US4485555A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1983 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Jun 2, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43L15/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A drawing device having a platform from which a marking instrument is suspended and wheels for moving the instrument over the surface of a drawing medium, a pair of these wheels being mounted equidistantly on opposite sides of the instrument, each of the pair of wheels being mounted to rotate freely, another of these wheels being a drive wheel depending from the platform and separated from the instrument on a line therefrom perpendicular to a line connecting the pair of wheels and the instrument. The device has an arrangement for moving the drive wheel to cause the drawing device to move and for varying the angle at which the drive wheel moves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.