Automatic pen-sensor
US4573129A · kind A · utility
15Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1984 |
| Grant date | Feb 25, 1986 |
| Priority date | — |
| Expiry date | Aug 27, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43L13/024
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A bi-directional pen plotter includes two pen stables and a pen holder located between the two pen stables for snatching a pen from either pen stable and for inserting a pen into either pen stable. There are four distinct stops to the motion of the pen holder at each pen stable depending on the four possible combinations of pen locations. Measuring the relative distances travelled by the pen holder in an initialization procedure the positions of all of the pens in the system may be determined uniquely.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.