Sanitary spray nozzle for spray guns
US6520426B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2001 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Jan 17, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B1/3046
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An automatic spray gun incorporates threadless, sanitary couplings for all air and fluid flow path connections for less contamination and lower maintenance. The spray gun nozzle body has threadless connection inlet couplings for air and fluid supply lines. There are threadless connections between the fluid tip and the nozzle body and between the air cap and the fluid tip. The nozzle body/fluid tip connection may incorporate multiple passageways for air and fluid flow; for example a center passageway for fluid flow plus annular middle and outer passageways for atomizing air and fan air respectively, for which seals such as O-rings or a full face gasket may be incorporated at this interface. The nozzle body may also have a threadless connection coupling for the actuator. The actuator can be a conventional mechanism or a diaphragm sealed shut-off/clean out needle mechanism or such other mechanism as may be available, or may simply be a block off cap in applications where air and fluid flow are controlled externally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.