Apparatus for brush-cleaning the interiors of pipes
AssigneeMidcon Pipeline Equipment Co.
InventorEdward Albert Clavin
Life of this patent
Estimating the term…
Abstract
Apparatus for brush-cleaning the interiors of pipes, wherein rotative brushes are carried by a rotative carrier plate. The brushes are rotated by air motors, and rotate at very high speeds. The brushes are spring-loaded to consistently bear against the inside of the pipe wall, and are disposed at a small angle from radial which results in reduced brush wear and more efficient pipe wall cleaning.
Claims31
Apparatus for brush cleaning the inner side of the wall of a pipe, comprising body means adapted to be received in a pipe, rotative means supported by said body means adapted for rotation coaxially of said pipe, a plurality of brushes circularly spaced around the outer periphery of said rotative means and mounted for rotation about an axis directed toward the wall of the pipe, gas motor means for rotating each said brush about its said axis, said rotative means having flow passage means for delivering gas from a non-rotative source carried by said body means to said gas motor means to operate said gas motor means, said axis of each said brush being disposed at a small forward angle from a direction radially of said rotative means with respect to the direction of rotation of said rotative means whereby the leading edge of each said brush bears against the pipe wall with less pressure than the trailing edge of the brush and thereby reducing brush wear, and including means for biasing each brush toward the pipe wall.
Apparatus for brush cleaning the inner side of the wall of a pipe, comprising body means adapted to be received in a pipe, rotative means supported by said body means adapted for rotation coaxially of said pipe, a plurality of brushes circularly spaced around the outer periphery of said rotative means and mounted for rotation about an axis directed toward the wall of the pipe, gas motor means for rotating each said brush about its said axis, said rotative means having flow passage means for delivering gas from a non-rotative source carried by said body means to said gas motor means to operate said gas motor means, said axis of each said brush being disposed at a small forward angle from a direction radially of said rotative means with respect to the direction of rotation of said rotative means whereby the leading edge of each said brush bears against the pipe wall with less pressure than the trailing edge of the brush and thereby reducing brush wear, said rotative means comprising conduit means supported by said body means for concentric rotation about the axis of the pipe, generally circular plate means fixed around said pipe and extending outwardly therefrom toward the pipe wall, said plate means having plural equally circularly spaced slots therearound extending inwardly from its outer periphery, each said gas motor means and brush being disposed in one of said slots and adapted to slide inwardly and outwardly of the slot.
Apparatus for brush cleaning the inner side of the wall of a pipe, comprising body means adapted to be received in a pipe, rotative means supported by said body means adapted for rotation coaxially of said pipe, a plurality of brushes circularly spaced around the outer periphery of said rotative means and each brush being mounted for rotation about an axis directed toward the wall of the pipe, gas motor means for rotating each said brush about its said axis, and including compression spring means disposed parallel to said axis for biasing each said brush toward the pipe wall.
Apparatus for brush cleaning the inner side of the wall of a pipe, comprising body means adapted to be received in a pipe, rotative means supported by said body means adapted for rotation coaxially of said pipe, a plurality of brushes circularly spaced around the outer periphery of said rotative means and each brush being mounted for rotation about an axis directed toward the wall of the pipe, gas motor means for rotating each said brush about its said axis, said rotative means comprising conduit means supported by said body means for concentric rotation about the axis of the pipe, generally circular plate means fixed around said pipe and extending outwardly therefrom toward the pipe wall, said plate means having plural circularly spaced slots therearound extending inwardly from its outer periphery, each said gas motor means and brush being disposed in one of said slots and adapted to slide inwardly and outwardly of the slot.
Dependencies are inferred from the claim text.