Container filling device
US4269236A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 17, 1979 |
| Grant date | May 26, 1981 |
| Priority date | — |
| Expiry date | May 17, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67C2003/266
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention disclosed is an integral attachment for a container filling device which comprises a filling head having a tubular closure adapted to be opened when the filling head is inserted into the container to be filled, and an annular member functioning as a container closure member and having a central opening slightly larger than the tubular closure, an upper annular member spaced from the first annular member and integrally connected thereto by a resilient tubular member, the upper annular member having a close fit with the tubular closure in order to hold the attachment in place when it is slid onto the tubular closure, at least one vent aperture extending through the lower annular member with its vent end opening in the upper surface thereof in a position where it is adapted to be closed by the upper annular member when the resilient tubular member is collapsed by pushing the lower annular member upward into contact with the upper annular member, and the annular members having an island of surface-to-surface contact surrounding each vent end opening. These islands are comprised of raised portions having an upper surface which seals against a complementary surface of the u…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.