Spray device and method
US7182277B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2006 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Feb 6, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M15/08
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A spray device including a barrel having a bypass and at least two spaced stoppers defining a first and second chambers and a spray nozzle. Movement of the first stopper drives the second stopper to the bypass and the fluid in the first chamber into the second chamber, mixing the fluid and substance. Continued movement of the first and second stoppers drives the mixture through the spray nozzle. The spray device may include a third stopper having a body in the tubular barrel which is moved toward the spray nozzle. The movement of the third stopper provides space for the mixture and prevents unpressurized fluid from flowing through the spray nozzle. The third stopper includes an axial stalk. The stalk may be deformable or the stalk may be separate from the body and the spray nozzle includes a longitudinal internal passage which provides communication with the spray port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.