High pressure water jet cleaner and coating applicator

Details High pressure water jet cleaner and coating applicator High pressure water jet cleaner and coating applicator

1990-08-14

1992-07-14

Wityshyn, Michael G.

Coating apparatus

Projection or spray type

With projector heating, cleaning or conditioning

118315, 118323, 118DIG11, B05C 104

Patent

active

051293552

ABSTRACT:
An automated pipeline rehabilitation apparatus (10) is disclosed. The apparatus employs a centering assembly (24) with pivoting arms (26, 28) which can pivot between an operating position and an installation/removal position to allow the unit to be removed from a pipeline. Arcuate rings (38, 40) are mounted on the arms. Spray nozzles (44) are mounted on the arcuate rings for reciprocating arcuate motion along the rings to treat the pipeline. The nozzles (44) can be used to clean the pipeline and prepare the outer surface of the pipeline with high pressure water jets with entrained abrasives. The nozzles (44) can also be used to apply a coating, preferably a polyurethane coating to the pipeline. A nozzle assembly (200) can be used to mount a spray gun (204) on the apparatus. The nozzle assembly permits easy adjustment of the nozzle position in two different directions to insure a consistent spray pattern. The nozzle assembly also provides for reversal of the tip of the nozzle for cleaning.

REFERENCES:
patent: 4205694 (1980-06-01), Thompson et al.
patent: 4830882 (1989-05-01), Ichinose et al.
patent: 4931322 (1990-06-01), Yamamoto et al.
patent: 4951600 (1990-08-01), Soshi et al.

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