Apparatus for coating the internal surfaces of tubular structure

Details Apparatus for coating the internal surfaces of tubular structure Apparatus for coating the internal surfaces of tubular structure

1990-01-22

1991-08-13

Hastings, Karen M.

Coating apparatus

Projection or spray type

Inside of hollow work

118317, 118313, 118321, 118323, 118DIG10, B05C 708, B05B 1304, B05B 1306

Patent

active

050387081

ABSTRACT:
Apparatus designed to coat the internal surfaces of tubular structures, and particularly for coating small diameter tubular structures having porous walls with a controlled coating material which may be a polymer, for example. The arrangement includes structure for rotating the tube to be coated simultaneously with structure for moving a coating applicator apparatus longitudinally through the tube for imparting an evenly dispersed coating throughout the longitudinally extent thereof. The arrangement is such that the apparatus may, selectively, impart a water or other solvent spray against, the already formed coating for extraction of a solvent from the coating. The coating characteristics (i.e., uniformity, thickness and pattern) are controlled by the use of a sintered metal and/or porous applicator, together with a controlled pressurized source of coating material.

REFERENCES:
patent: 2336946 (1943-12-01), Marden et al.
patent: 4233932 (1980-11-01), Blakeslee

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