Gas filling method and gas filling apparatus
US11708942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2021 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Aug 4, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2221/031
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A gas filling method includes the steps of: intermittently transferring a bag to arrange the bag at a gas blowing processing position; inserting a blowing nozzle into a gas guide path of the bag in the gas blowing processing position; pinching the blowing nozzle arranged in the gas guide path from outside of the bag with a pair of pinching members in the gas blowing processing position; causing the blowing nozzle to eject the gas in such a manner that the gas is sent to the gas accommodation portion in the gas blowing processing position in a state where the blowing nozzle is pinched via the bag by the pair of pinching members; and closing the gas accommodation portion in an airtight manner in the gas blowing processing position in a state where the blowing nozzle is arranged in the gas guide path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.