Method for packing filler material
US10228087B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 10, 2014 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Oct 10, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for filling a gap with a filler material, enabling prevention of inflow of the filler material into an air removing tool through its opening before complete removal of air from the gap, and enabling uniform filling of the gap with the filler material. The gap is between an existing conduit and a lining material provided inside the existing conduit. The method includes: inserting an air removing tool into an air removing hole bored through the lining material, and bringing a leading end face of the air removing tool into contact with the inner circumferential surface of the existing conduit; and injecting the filler material into the gap while expelling air from the gap through a leading end of the air removing tool, the air removing tool including, at its leading end, an air removing portion through which air is discharged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.