Bell cup powder spray applicator
US6676049B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | May 18, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B5/0418
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A rotating powder bell cup electrostatic spray assembly is provided. This assembly includes a bell cup body removably mated coaxially by screw threads to a first deflector, the assembly rotatably affixed to an air/powder supply. Preferably, the bell cup and first deflector are constructed from an insulative, non-stick material. The assembly includes unique, streamlined, preferably teardrop shaped, paddle deflectors. All corners around which powder passes are rounded, thereby achieving streamlined flow and little or no powder accumulation, as well as improved efficiency, ease of assembly and disassembly, and ease of cleaning for such devices. A preferred non-stick material of construction of the bell cup and first deflector is polytetrafluoroethylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.