Dispensing member having an outlet valve formed by a differential piston
US6371337B1 · kind B1 · utility
11Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2001 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1074
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid-dispensing member comprising:a body defining a chamber;an actuating rod provided with a pusher;a piston mounted on the actuating rod to slide in leaktight manner in the chamber;an inlet valve; andan outlet valve;wherein the outlet valve comprises a differential piston that can be moved under the action of the pressure exerted on the fluid by the piston against the action of a spring which abuts at one end against the differential piston, and at its other end against the pusher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.