Motorized apparatus for pipe inspection and repair

A method for maintaining a pipe having a sidewall defining an interior cavity and having an inner surface, said method comprising:

• positioning a motorized apparatus within the interior cavity of the pipe, wherein the motorized apparatus includes a main body having a length extending along a longitudinal axis of the main body, the main body comprising a first end and a second end opposite the first end, the motorized apparatus further including at least one drive assembly coupled to at least one of the first end and the second end of the main body, the at least one drive assembly comprising driven members configured to engage with the inner surface of the pipe;
• moving the motorized apparatus through the interior cavity of the pipe using the at least one drive assembly until a work location on the inner surface of the pipe is positioned between the first end and the second end of the main body;
• moving a maintenance head coupled to the main body along the length of the main body and rotating the maintenance head about the longitudinal axis of the main body until at least one tool on the maintenance head is proximate to the work location, wherein the motorized apparatus includes a carriage movably coupling the maintenance head to the main body and at least one actuator configured to move said maintenance head along an entirety of the length of the main body between the first end and said second end and rotate the maintenance head about the longitudinal axis of the main body;
• and
• performing an action at the work location using the at least one tool.

A motorized apparatus for maintaining a pipe having a sidewall defining an interior cavity and an inner surface, said motorized apparatus comprising:

• a main body having a length extending along a longitudinal axis of said main body, said main body comprising a first end and a second end opposite said first end;
• at least one drive assembly coupled to at least one of said first end and said second end of said main body, said at least one drive assembly comprising driven members configured to engage with the inner surface of the pipe and move said motorized apparatus through the interior cavity of the pipe;
• a maintenance head comprising at least one tool configured to perform an action on the inner surface of the pipe;
• a carriage movably coupling said maintenance head to said main body;
• and
• at least one actuator configured to move said maintenance head along an entirety of the length of said main body between said first end and said second end and rotate said maintenance head about the longitudinal axis of said main body.