Airless dispenser for dispensing low doses of liquid products, in particular cosmetic or pharmaceutical products
US7328856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2006 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Oct 6, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/026
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to an airless dispenser which is used to dispense low doses of liquid products. The inventive dispenser is characterised in that it consists of: a first part comprising a spray nozzle which is communicated with a network of channels on the wall of an inner truncated-cone-shaped bore, and a second part comprising a deformable container which equipped with a rigid flange for fixing the first part in the aforementioned bore. The outer periphery of the flange comprises an inclined surface which defines a vortex chamber, opposite the above-mentioned network of channels, and which, together with the wall of the first part, forms an internal peripheral outlet groove. The outlet groove is defined radially by a flexible lip forming an inlet valve which is supported by the first or second part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.