Heater for top portions of containers
US5868567A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1997 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Jun 23, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7166
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A heater for top portions of containers 11 filled with contents and each having a top forming tubular portion 14 generally rectangular to square in cross section for heating seal parts 31, 35 of the top forming portion 14 with hot air for heat-sealing comprises a hot air nozzle 51 in the form of a bottomed tube having a generally rectangular to square cross section and to be inserted into the top forming portion 14 for heating. The hot air nozzle 51 having first to fourth four side walls 61 to 64 integral with one another with a ridgeline formed between the adjoining side walls. The side walls 61 to 64 is formed with orifices 68 as distributed over regions thereof corresponding to the respective seal parts 31, 35. The side walls 61 to 64 each have an outer surface facing obliquely upward.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.