Dispensing apparatus having a perforate outlet member and a vibrating device
US5152456A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1990 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Dec 3, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Dispensing apparatus (1) comprises a housing (2) defining a chamber (3) receiving liquid (4) to be dispensed and comprising a perforate membrane which defines a front wall of the chamber. A vibrating device (8) is connected to the housing and is operable to vibrate the perforate membrane to dispense droplets of liquid through holes (25) in the perforate membrane. The housing comprises an annular member (11) having a relatively thin inner annular portion (68) connected to the perforate membrane and a relatively thick outer annular portion (66) connected to the vibrating device. The apparatus is suitable for dispensing pharmaceutical products as an atomized mist and provides a hand-held inhaler for oral inhalation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.