Sterile system for dispensing a product contained in a container in particular a soft tube
US6974053B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2002 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Nov 29, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/00444
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a dispensing and closure system arranged at the top of a container, in particular a soft tube comprising a liquid or pasty product, which is delivered by pressing on the tube. The invention is characterized in that it consists of a valve comprising two concentric elements, one of which forms a mobile cylindrical delivery valve and the other forms a cylindrical body exiting from a plate linked to the tube. The two elements defined between them an annular gap through which the product passes. When a manual pressure is exerted on the tube, it causes the product to act directly on the delivery valve causing the latter to open, countering an elastic return member, so as to allow the product to escape from the tube, when the pressure is exerted thereon and to automatically close the delivery valve when the pressure is released, preventing the possible return of the product already dispensed from returning inside the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.