Saturated polyester resin bottle
US4749092A · kind A · utility
165Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1987 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Jul 27, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2501/0081
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a saturated polyester resin bottle made thin by biaxial orientation and comprising a trunk portion formed to have a regular polygonal cross section consisting of a plurality of generally upright flat sides separated by vertically oriented ribs. When the interior of the bottle is subjected to a vacuum, the flat sides uniformly warp radially inwardly to accommodate the vacuum without detracting from the appearance of the bottle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.