Coating tray
US3970040A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1975 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Apr 23, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A tray suitable for providing a uniform coating of predetermined thickness on sheet material includes a generally V-shaped trough for dispensing a fluid contained therein through a plurality of apertures formed through the bottom of the trough and spaced along its length. Along the outer surface of the apex of the V-shaped trough, there is formed a channel communicating with the apertures and defining a pair of spaced continuous blades extending along the length of the trough and spanning the apertures. The lands of material between the apertures of the trough are tapered to a point on the side of the trough adjacent the channel to provide a uniform supply of coating material within the channel. As the trough is moved across the surface of a sheet to be coated, the trailing blade which is spaced at a desired height from the sheet material, provides a uniform coating of fluid to the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.