Working sheath tube and environmental maintenance method for renovating operation of pump-discharge pipe
US10598313B2 · kind B2 · utility
0Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2016 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Jul 1, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2270/0134
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A working sheath tube (1) is used when a renovating operation of a pump-discharge pipe (4) branched from a peripheral wall (33) of a tubular barrel (3) inserted into a tank (2) in which a fuel is retained. The working sheath tube has a bottomed tubular shape which can be inserted into the barrel, and has a working space thereinside. A insertion hole (15a) into which a closing member (7) for closing a pump-discharge pipe is inserted is provided on and penetrates a sheath tube peripheral wall (15). While the sheath tube is inserted into the barrel, the insertion hole faces an opening of the pump-discharge pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.