Print drum security system
US4601240A · kind A · utility
5Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1984 |
| Grant date | Jul 22, 1986 |
| Priority date | — |
| Expiry date | Oct 4, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00548
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A postage meter has a print drum with print wheels which are shiftable to select the value of the postage. The print wheels are adjusted by displacing respective rack gears through an annular drive member and a pinion, and the print drum is rotated for printing the selected value on a workpiece. A shutter bar locks the print drum against rotation during value selection and locks the annular member against rotation during print drum rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.