Method for the low-maintenance operation of an apparatus for producing a surface structure, and apparatus
US5459296A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1993 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Nov 1, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K15/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus for producing surface structures on a drum with an electron beam, comprising beam equipment having a beam generator that generates the electron beam, a focal length adjustment as well as a focusing adjustment, and a vacuum chamber which accepts the roller, the beam equipment comprising a passage for the electron beam in a wall that separates the beam equipment from the vacuum chamber, the passage being fashioned as a nozzle having a nozzle jacket whose inside diameter is selected such that the electron beam defocused with the focusing adjustment charges at least a part of the nozzle jacket in a cleaning interval, the nozzle jacket comprising a nozzle base secured in the wall and an end segment that projects beyond the wall in a direction toward the vacuum chamber, and a taper connecting said end segment to the nozzle base, the taper being radially limited by a channel, and a method of operating such an apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.