Metered spray device
US3949939A · kind A · utility
23Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1975 |
| Grant date | Apr 13, 1976 |
| Priority date | — |
| Expiry date | Mar 26, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/0062
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A metered spray device has a container with an open top. A barrel is sealed in the top of the container and extends into the container. An elongated piston is slidably mounted in the barrel. The piston has a central opening running the full length of the piston for the passage of fluid. A check valve in the lower end of the barrel blocks the flow of fluid from the barrel into the container. A nozzle for engagement with a nostril is connected to the upper end of the piston. A spring biased check valve in the upper end of the piston blocks the flow of fluid downwardly into the piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.