Coating apparatus – With means to prepare work surface for coating
Patent
1978-02-10
1980-01-01
McIntosh, John P.
Coating apparatus
With means to prepare work surface for coating
51411, 118306, B05C 702, B24C 332
Patent
active
041810929
ABSTRACT:
A machine for treating a pipe interior includes a carriage movable longitudinally through the pipe. A support structure is mounted on the carriage and journalled at the top of this structure is a tubular shaft which is mounted to rotate about its own longitudinal axis with that axis being substantially aligned with the corresponding axis of the pipe. Secured to one end of the tubular shaft is a pair of material-conveying tubular arms which are radially disposed with respect to the shaft. A supply hose leading to a source of pressure-driven fluid material is coupled to the opposite end of the tubular shaft. At the junction of the tubular shaft and arms, there is a deflector member which deflects a particular fluid material flowing through the shaft into the amrs so as to be discharged against the pipe interior as the carriage moves through the pipe. A different fluid material can be applied to the pipe interior during a subsequent trip of the machine through the pipe when an inner tube is installed within the tubular shaft. This tube is connected at one end to other radially disposed arms and at the opposite end to another supply hose substituted for the first supply hose. Thus, the same machine can be assembled to perform two separate pipe treating operations such as sandblasting and painting.
REFERENCES:
patent: 1942876 (1934-01-01), Perkins
patent: 2140298 (1938-12-01), Miller
patent: 2168917 (1939-08-01), Perkins
patent: 2185570 (1940-01-01), Ridley
patent: 2468984 (1949-05-01), Krieg et al.
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