Pump for cosmetic product vial provided with air purging means
US10898916B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 24, 2019 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Dec 24, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1028
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pump for a vial intended to contain a cosmetic product includes a variable-volume dosing chamber defined at least partially by a deformable element. The pump operates by varying the volume of the chamber by elastic deformation of a membrane of the deformable element from an initial state wherein the chamber has a maximum volume to a deformed state wherein the volume of the chamber is minimal. The chamber is provided with a product inlet orifice and a product outlet orifice, and the pump includes deform the membrane by exerting pressure on the membrane. Finally, the pump purges the air from the chamber when the membrane is in its deformed state, by enabling the dosing chamber to communicate with the outside of the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.