Automatic drafting machine having air blower means for holding paper down
US4646109A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Jun 6, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D15/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An automatic drafting machine in which the paper is disposed on drive rollers and the paper is sandwiched by the drive rollers and pressure rollers in resilient contact with the drive rollers, and a writing implement is shiftably disposed in a right angle direction to the feeding direction of the paper along the horizontal surface of the paper, and guides for mounting the paper are disposed on both sides of the track along which the writing implement shifts, and an air blowing opening for supplying downward air pressure on the paper is disposed in the vicinity of the outer end portions of the guides in the feeding direction of the paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.