Color change for powder coating material application system
US7712681B2 · kind B2 · utility
8Cited by
71References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2005 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Dec 28, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B14/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A color changer has a common feed passage that is connected to two or more inlet passages. The common feed passage can be reverse purged in a direction that is opposite a direction of powder flow through the common feed passage. A valve element seals a supply port that connects the inlet passage to the common feed passage to eliminate dead space and form a near bore line seal. The valve element is an elastic material that expands in response to applied compressed air inside the valve element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.