Piston with flexible closure for aerosol container
US11027910B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2018 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Nov 19, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/76
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to a piston for an optionally pressurized container, the piston having a sidewall, an upper side and a bottom side, and at least a first circumferential seal, wherein at least the upper side of the piston is closed by a closure and made of a first elastic material, wherein the upper side is configured to deform upon a pressure change acting on the upper side, wherein the sidewall is made of a second material which is different from the first elastic material, wherein the first circumferential seal is positioned on the sidewall on its outer surface. The invention further relates to an optionally pressurized container comprising a piston as mentioned above, to a process of discharging a product from said container and to a process of manufacturing said container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.