Device for processing flat workpieces, in particular printed circuit boards
US5772765A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1996 |
| Grant date | Jun 30, 1998 |
| Priority date | — |
| Expiry date | Nov 12, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D17/004
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The flat workpieces (W) are conveyed in the vertical position on a horizontal transport path through at least one processing cell (BZ) that contains a processing bath, vertical slots (S) for the passage of the workpieces (W) being provided in the end walls of the processing cell (BZ). Bars or rods which are arranged in pairs in the processing bath, such that they are loose in the vertical direction, are assigned in pairs to the slots (S) as seals (D) and are pressed by the liquid pressure against one another or against the workpiece (W) respectively passing through, and against the assigned end wall of the processing cell (BZ). Seals (D) having a circuilar cylindrical cross section rotate while the workpieces (W) are passing through. The seals (D) are preferably arranged in end chambers (SK) which are fitted at the ends to the processing cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.