Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1984-06-18
1985-12-17
Fisher, Richard V.
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
73756, 138 92, 228125, B08B 900, B08B 906
Patent
active
045590850
ABSTRACT:
A method for installing a pipeline having a plurality of pipes, including each pipe having at least one handhole in the wall near at least one of its ends, and a threaded cap for closing the handhole, whereby, when a pipe is joined to another pipe by welding, spatters formed at or near the welded joint can be removed by hand through the handhole.
REFERENCES:
patent: 1509485 (1924-09-01), Primrose
patent: 1630269 (1927-05-01), Lippert
patent: 3550637 (1970-12-01), Briden
patent: 3963514 (1976-06-01), Wassen
patent: 4005847 (1977-02-01), Ekman
patent: 4335757 (1982-06-01), Lankston
Liu Eddy Y. L.
Rong Pan F.
Cohen Sharon T.
Fisher Richard V.
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