Charging device with grid tensioning shafts
US6255649A · kind A · utility
1Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1999 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Jul 29, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/1609
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A charging device comprises a housing defining a charging chamber. Two tensioning shafts are mounted on opposite ends of the housing. The charging device comprises a control grid attached to the grid tensioning shafts, thus substantially covering the chamber opening. The control grid is comprised of a conductive material capable of being stretched along its length. As a result, the grid becomes flat when opposing rotating forces are applied to the two tensioning shafts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.