Air valve
US5460203A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Jun 23, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8704
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A trigger operated air valve suitable for controlling both the flow of air to and the flow of feedback air from a nozzle assembly in high volume low pressure (HVLP) spray guns. A trigger moves a spindle against the pressure of a spring. As the trigger is moved, a first valve is opened to initiate a main flow of air to the spray gun nozzle assembly prior to opening a second valve which initiates the flow of feedback air from the nozzle assembly. When the trigger is released, the second valve is closed to terminate the flow of feedback air prior to closing the first valve to terminate the main flow of air to the spray gun nozzle assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.