Dispenser head and receptacle fitted therewith
US6257503A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 8, 2000 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | May 8, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7931
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A spray head for fixing on a control rod of a valve or a pump. The spray head includes a body and a shutter disposed in a housing of the body. The housing is suitable for dispensing substance under pressure. At rest the shutter is in a closed position in which its frustoconical head portion is seated a frustoconical bearing surface of the body. The shutter moves away from the bearing surface under the pressure of the substance contained in the housing when the substance is being dispensed to form an annular dispenser orifice enabling the substance to be dispensed in the form of a hollow conical spray, at least in the vicinity of the spray head. The shutter moves away from the bearing surface against a resilient return action urging it back towards its closed position and returns to the closed position when the pressure of the substance diminishes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.