Method of renewing water pipe, including coating thereof, and ap

Details Method of renewing water pipe, including coating thereof, and ap Method of renewing water pipe, including coating thereof, and ap

1978-11-06

1980-08-12

Lusignan, Michael R.

Coating apparatus

With means to prepare work surface for coating

134226, 1510405, 118306, 118317, 118DIG10, 427230, 427235, 427239, B05D 722, B05C 1100, B05B 1306, B05C 500

Patent

active

042167388

ABSTRACT:
A method of cleaning and renewing sections of pipe is disclosed wherein the flow of fluid through the pipe is shut off and a scrubbing element is inserted into one end of the pipe. The scrubbing element is advanced through the pipe while at the same time ejecting a cleaning fluid to clean the inside of the pipe section. The inner surface of the section is then scraped to remove materials adhering to the inside of the section which were not previously removed. The removed materials are then flushed from the inside of the section and the section is dried. The inside of the section is then painted by passing a painting device through the section which applies a mixture of paint and hardening liquid to the inside of the pipe. A device is also disclosed for coating the inner surface of a pipe which comprises a casing, an air motor and a cowling operatively connected to the motor for scattering coating liquid fed to the device. The apparatus may further comprise a mixing device for mixing coating liquids prior to applying them to the inner surface of the pipe.

REFERENCES:
patent: 3106491 (1963-10-01), Leibner
patent: 3164491 (1965-01-01), Brockett et al.
patent: 3457895 (1969-07-01), Mukai

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