Self-venting end unit for pressure packaging
US4210255A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1978 |
| Grant date | Jul 1, 1980 |
| Priority date | — |
| Expiry date | Jun 30, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D51/1644
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An end unit intended for packaging products in an associated can or container wherein the product is of the type producing gases so as to normally increase the internal pressure within the can after the closing of the can. The end unit has a vent opening therethrough and is normally closed by a closure member which is held in contact with the container wall surrounding the vent opening by a strip of stretchable material having a memory. When pressure within the container exceeds a predetermined pressure, the closure will move out of the container sealing position under the restraint of the strip, and the container will be vented to the atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.