Fluid or powdery product dispensing device
US9724713B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 4, 2014 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Jul 4, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/584
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dispenser device, including an outlet, air expeller including a piston that slides in an air chamber between rest position and dispensing positions, and a reservoir containing a dose composition. The reservoir includes an air inlet connected to the air expeller, and a composition outlet connected to the outlet, the air inlet including a composition retainer member, and the composition outlet being closed by a closure element force fitted in the composition outlet of the reservoir. A mechanical opening system co-operates with the closure element to expel it from its closed position while the device is actuated. The piston, when in its rest position, co-operates in non-airtight manner with the air chamber so that the air chamber communicates with the atmosphere. The piston includes an inner lip co-operating with a cylindrical surface, the cylindrical surface including fluting co-operating in non-airtight manner with the inner lip in the rest position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.