| 摘要 |
PCT No. PCT/SE92/00082 Sec. 371 Date Feb. 16, 1994 Sec. 102(e) Date Feb. 16, 1994 PCT Filed Feb. 11, 1992 PCT Pub. No. WO93/03866 PCT Pub. Date Mar. 4, 1993.The present invention relates to a device for cleaning and/or treating elongated closed ducts or channels, particularly ventilation ducts. The device includes an automotive vehicle and mounted thereon a rotary brush useful for cleaning and/or surface treating. The rotary brush is mounted for rotation on a shaft that extends generally at right angles to the longitudinal axis of the duct. The invention also contemplates mounting a television camera onto the automotive vehicle for monitoring results of the cleaning and/or treating operation.
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