Application for spraying liquid chemical onto drill pipe

Details Application for spraying liquid chemical onto drill pipe Application for spraying liquid chemical onto drill pipe

1982-06-01

1984-02-28

McIntosh, John P.

Coating apparatus

Projection or spray type

Plural projectors

118125, 118326, 118DIG11, 118DIG18, 152566, B05C 500, B05C 1500

Patent

active

044336390

ABSTRACT:
The applicator is annular in configuration, having top and bottom walls formed of elastic material. The central openings through these walls are undersized, so that the walls seal around the string of pipe passing through the openings. The applicator is mounted on the string and is free to move laterally with it. Thus there is provided a free-floating, sealed, annular spray chamber mounted on the string and free to move laterally with it. A ring of nozzles is mounted within the chamber for spraying the string. A pump and conduit supply pressurized chemical to the nozzles. A vacuum pump and conduit suck excess chemical from the chamber for recovery.

REFERENCES:
patent: 2667929 (1954-02-01), Hunt
patent: 2960706 (1960-11-01), Dunham
patent: 3334639 (1967-08-01), Grant
patent: 3840384 (1974-10-01), Reade et al.
patent: 3851623 (1974-12-01), Landry, Jr.
patent: 4169427 (1979-10-01), Crump et al.

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