Metered-dose inhaler
US8132712B2 · kind B2 · utility
8Cited by
10References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 2008 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Sep 7, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1526
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A metered dose inhaler dose counter, the counter includes: an actuator; a rotary gear wheel having a plurality of ratchet teeth; a driver for driving the rotary gear in a step-wise fashion in response to displacement of the actuator; a pawl that prevents reverse rotation of the rotary gear; and a display coupled to the rotary gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.