Device for spraying a predetermined dose of a fluid, and a method of filling the device
US5511698A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1994 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Feb 16, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1026
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device for spraying a single dose of a fluid in divided form includes a cylindrical tank (1) containing the dose of fluid, a piston (2) sliding in the cylindrical tank (1), a pusher for the piston (2), and outlet passage (5, 6) capable of communicating with the cylindrical tank (1). The piston (2) is displaceable relative to the pusher between a storage position, in which it prevents communication between the outlet passage (5, 6) and the cylindrical tank (1), and an actuation position, in which it puts the outlet passage (5, 6) into communication with the cylindrical tank (1). According to one aspect of the invention, the piston (2) is maintained in its storage position by wedging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.