Pump for cosmetic product vial, sealed under low-pressure conditions
US10926281B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 24, 2019 |
| Grant date | Feb 23, 2021 |
| Priority date | — |
| Expiry date | Dec 24, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/0063
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pump for a vial intended to contain a cosmetic product. The pump includes a dosing chamber with a variable volume defined at least partially by a deformable element between an initial state and a deformed state. The pump further includes a guiding rod passing through the deformable element, the latter sliding along the rod when it undergoes a deformation. The deformable element includes an outlet lip delimiting an outlet orifice, surrounding a section of the rod, and bearing in a sealed manner against the rod or deviating from the rod according to the pressure in the chamber. A clamping edge extending from the rod maintains the outlet lip bearing in a sealed manner against the rod when the membrane is in the initial state thereof whatever the pressure in the chamber and whatever the pressure around the pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.