Footed hot-fill container
US5133468A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1991 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Jun 14, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2949/0715
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A blow-molded container of thermoplastic resin has a hollow body with a generally cylindrical side wall portion rotationally symmetric about a longitudinal axis of the container. A shoulder portion integrally joins the side wall portion to a finish. An integral base merging with the side wall is defined by an outer surface comprising a plurality of downward projections separated from each other by generally arcuate segments extending essentially from the cylindrical side wall to the longitudinal axis of the container. The shoulder and sidewall portions are tempered during formation of the container to withstand hot filling at a temperature of at least about 170.degree. F. and subsequent introduction of a cryogenic liquid gas to provide an initial pressurization of at least 20 psi at the fill temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.