Patent ID: 8394205

Claim:
A pipe scarifying system for scarifying a pipe surface, the system comprising: a. a freestanding scarifier having a nozzle, and a first end having at least one wheel to support the scarifier, and a second end; b. a subterranean pipe tractor for propelling the scarifier along a pipe, the subterranean pipe tractor comprising: i. a scarifier connector that releasably connects the scarifier to the subterranean pipe tractor; ii. a drive mechanism adapted to propel the subterranean pipe tractor through the pipe when the scarifier is connected to the subterranean pipe tractor; iii. a power source that powers the drive mechanism; and iv. a scarifier lift mechanism for lifting the second end of the scarifier; c. a high-pressure fluid source; and d. a conduit connecting the high-pressure fluid source to the nozzle.