Nozzle for dispensing a liquid or pasty material
US5992764A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1998 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Jul 8, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B1/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A nozzle for dispensing a liquid or semi-liquid substance (P) and designed to be mounted on a tank (R) suitable for being put under pressure. The nozzle is of the type comprising a thimble (1) and moving shutter (2) housed inside the thimble. The thimble (1) is provided with a coupling end (11) for coupling to the tank (R) and an ejection orifice (10). The shutter (21) is constituted by a rod (21) carrying a plug (20) at an outer end thereof. The plug (20) cooperates with the ejection orifice (10) to form a delivery valve. The rod (21) also carries a transverse wall (22) at an inner end thereof. The wall (22) leaves a passage for the substance (P) and cooperates with a resilient return means (3) for returning the moving shutter (2) towards a closed position in which the plug (20) is engaged in sealed manner in the ejection orifice (10). The nozzle further comprises an admission valve constituted by a deformable peripheral lip (23) around the rod (21) which subdivides the passage for the substance (P) in sealed manner into an upstream compartment and a downstream compartment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.