Blow mold for forming a refillable polyester container
US5198248A · kind A · utility
42Cited by
25References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1992 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Sep 3, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/004
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This relates to a returnable/refillable container in the form of a blow molded polyester biaxially oriented bottle wherein the container includes a domed base construction wherein the wall thickness gradually and smoothly increases to a maximum at the center of the dome. This also relates to a specially configurated preform which is blow molded to form the container and a specially configurated blow mold cavity for receiving a preform having a lower axial projection in the form of an elongated gate without crushing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.