Liquid product dispensing and receiving device
US8430275B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2010 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Mar 1, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device for dispensing and receiving a liquid or semi-liquid product via a dosage chamber of a pump body. The device includes a piston which is fixably mounted in the pump body and is provided with an end sealingly engaged into the chamber. The piston end is provided with a membrane forming an intake valve allowing the introduction of the product in the dosage chamber and including at least one sealing peripheral lip in sliding contact with an inner wall of the dosage chamber. The device includes a connection element wholly within the pump body for connecting the piston to the pump body. The connection element is an independent part from the membrane and the pump body and is connected to a bottom part of the pump body over a conduit extending up from the bottom part of the pump body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.