Patent ID: 8316740

Claim:
A strap pipe wrench for driving an object having a generally cylindrical shape, said strap pipe wrench comprising: a handle which extends along a longitudinal axis; a connecting member which is movable relative to said handle in a direction parallel to the longitudinal axis; a rod passing through said connecting member; a strap formed in a loop and having two opposing end portions which cooperate with two zones integral with said handle when said strap surrounds the object tightly, said two opposing end portions of said strap being attached to said connecting member; a displacement device for displacing said connecting member, and enabling the size of said loop of said strap to be adjusted and said strap to be tensioned when said strap surrounds the object tightly; and a shoe disposed between said two zones for abutment on the object, said shoe having an abutment face of generally arcuate shape, wherein said shoe is not connected to said strap, wherein said connecting member is movable between at least one first position corresponding to the position of said strap in a loose state, surrounding the object with clearance, and a second position corresponding to the position of said strap in a tensioned state, surrounding the object tightly and firmly, wherein said shoe is configured such that said abutment face is in abutment with the object when said strap is in the second position, wherein said displacement device comprises: (i) locking elements for locking said connecting member, said locking elements being configured to keep said connecting member fixed relative to said handle when said connecting member is in the first position; (ii) a first resilient biasing element which urges said connecting member towards said second position, the first resilient biasing element being arranged coaxially with an upper portion of said rod and being in abutment on said connecting member and on said handle; and (iii) a control member configured to deactivate said locking elements, wherein said first resilient biasing element biases said connecting member to move with respect to said handle.