Patent ID: 7954567

Claim:
An adjustable centering tool for use in pipes of varying inner diameter, said centering tool comprising: a cylindrical body with an outer circumference having a plurality of longitudinal grooves, each longitudinal groove of said longitudinal grooves having first and second sloped terminations; an upper lock mandrel; a lower lock mandrel; and a plurality of identical and steplessly adjustable, radially protruding wings, each wing of said plurality of wings having a guiding lug and first and second chamfered end faces, wherein each wing of said wings, when fixed in a respective groove of said longitudinal grooves, is retained by said upper lock mandrel and said lower lock mandrel, said upper and lower lock mandrels engaging said first and second chamfered end faces, respectively, said first and second sloped terminations cooperating with said first and second chamfered end faces, respectively, and said respective groove cooperating with said guiding lug.