Dispensing apparatus
US6062212A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1995 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Apr 11, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B17/0676
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dispensing apparatus which defines an outlet through which a metered dose of liquid from a reservoir is dispersed as an atomized spray. A droplet of liquid is metered onto a perforate membrane which is vibrated by way of a piezoelectric transducer such that atomized droplets are dispensed through the holes formed in the membrane. At each actuation of a delivery device, which provides the metered quantity of liquid, the transducer is actuated so as to vibrate the membrane for a period greater than the dispensing period required for the droplet to be dispensed. The apparatus is particularly suitable for dispensing pharmaceutical preparations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.