Dispenser with a hermetic seal
US10105721B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2014 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Sep 19, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1094
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dispenser (1) with a hermetic seal includes a hollow containment body (2) which can be inserted in a bottle, a lower suction tube (5), a piston (7) slidable inside the containment body (2), a hollow stem (6) axially slidable inside the containment body (2), a sealing valve (8) inserted in a bottom portion (4) of the containment body (2) and interposed between the suction tube (5) and the dosing chamber (11). The sealing valve (8) is cup-shaped and the piston (7) has a lower sealing portion (7b) configured in such a way as to interact in compression with an upper edge (8a) of the sealing valve (8) making a hermetic seal between the sealing valve (8) and the piston (7).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.