Diaphragm pump
US6712243B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Dec 2, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/029
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention provides a pump of the type comprising a body (1) having a bottom portion for communicating with a dip tube (2) via an admission valve and a top portion for connection to the edge of a container (R) and itself containing a metering chamber (10) closed in leaktight manner on top by compression means provided with an exhaust valve and with a return member, and suitable for being actuated by manual thrust being applied to a dispenser head (T) provided with a delivery duct (C),the pump being characterized in that said return member comprises an elastically deformable internal diaphragm (3) carried by the dispenser head (T) and co-operating with a rigid cup (4) fixed beneath said head (T) and co-operating with said diaphragm (3) to define the metering chamber (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.