Two-phase dispensing device
US6398079B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2001 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Oct 18, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1087
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid dispenser device comprising: a fluid pump (1) comprising: a pump body (10) provided with an inlet valve member (12); an actuating rod (2) mounted to move axially in the body (10); and a free piston (3) mounted to slide in leaktight manner in the body (10), the piston (3) being mounted to move over the actuating rod (2) to form an outlet valve member (332) therewith; and an air pump comprising an air chamber (54) provided with an inlet valve member (515), with an outlet valve member (331), and with a piston (48) for compressing the air in the chamber; the fluid dispenser device being characterized in that the outlet valve (332) of the fluid pump and the outlet valve (331) of the air pump open out into a common duct (23).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.