Cleaning and liquid contact with solids – Processes – Using solid work treating agents
Reexamination Certificate
2011-01-25
2011-01-25
Barr, Michael (Department: 1711)
Cleaning and liquid contact with solids
Processes
Using solid work treating agents
C134S042000
Reexamination Certificate
active
07875121
ABSTRACT:
A pipe maintenance method and device is particularly suited for maintaining a pipe of a gas-insulated high-voltage line with a particle trap system extending along the pipe. The novel method enables poorly accessible sections to be reached. To this end, a maintenance unit is displaced along the particle trap system, and it is guided thereby.
REFERENCES:
patent: 5406666 (1995-04-01), Werlink
patent: 5899795 (1999-05-01), Penza
Barr Michael
Chaudhry Saeed T
Greenberg Laurence A.
Locher Ralph E.
Siemens AG
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