Patent ID: 7055605

Claim:
A downhole tool for circulating fluid within a borehole, the tool comprising: a tubular assembly having an axial through passage between an inlet and a first outlet, a second outlet extending generally transversely from the tubular assembly and the through passage including a lower ball retaining means; an obturating member including an upper ball retaining means, the obturating member being moveable relative to the tubular assembly between a first position closing the second outlet and a second position at which the second outlet is open; and first ball means being retainable within said upper and said lower ball retaining means, the first ball means preventing fluid flow between the inlet and first outlet when retained within said upper ball retaining means and when retained within said lower ball retaining means, the first ball means being deformable under fluid pressure above a first pressure to pass through said upper and said lower ball retaining means.