Dispensing closure with pressure-actuated flexible valve
US5271531A · kind A · utility
159Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1993 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Apr 27, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2547/066
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A dispensing closure is provided for an opening in an squeeze-type container and includes a body defining a dispensing passage for communicating between the container interior and the container exterior through a container opening. A flexible, self-sealing valve is mounted in the body for opening in response to increased container pressure. A retaining ring is provided for retaining the valve in the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.