Fluid discharge nozzle
US7594616B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 19, 2005 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Aug 3, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/23
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention relates to liquid dispensing devices having discharge nozzles. The discharge nozzle has a flow control device. The flow control device includes a check valve and an outlet. The check valve is capable of creating a vacuum pressure cycle during closing. The outlet is formed from at least one perforated plate. The perforated plate has a plurality of apertures therethrough. The plurality of apertures include at least two differently sized sets of apertures. The at least two differently sized sets of apertures include a larger size set of apertures and a smaller size set of apertures. The larger size set of apertures are centrally located within the perforated plate. The present invention helps to concentrate the greatest vacuum pressure on a decaying portion of a stream of liquid right in the center of the outlet of the discharge nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.