Pipe expanding tool

A pipe expanding tool that is configured to expand an end of a pipe, the pipe expanding tool comprising:

• a wedge that is movable in a reciprocating manner between a first position and a second position along a first axis;
• a plurality of jaws that are rotatable around the first axis and that are movable relative to the first axis to a closed position and to an open position defined radially outward of the closed position, the jaws being configured to move from the closed position to the open position as the wedge moves from the first position to the second position and to move from the open position to the closed position as the wedge moves from the second position to the first position;
• a spring;
• and
• a first rotary member that is engaged with the jaws such that the first rotary member is integrally rotatable with the jaws, the first rotary member being configured to be rotated only in one direction around the first axis by an elastic force of the spring, wherein the first rotary member is configured to be rotated by the elastic force of the spring, corresponding to at least a portion of a first movement phase of the wedge in which the wedge moves from the second position to the first position;
• and
• a second rotary member that is configured (i) to be rotated in a first direction around a second axis, corresponding to at least a portion of a second movement phase of the wedge, and (ii) to be rotated in a second direction opposite to the first direction around the second axis by the elastic force of the spring, corresponding to at least a portion of the first movement phase of the wedge;
• and
• a transmitting member that is operably coupled to the first rotary member and the second rotary member and that is configured to transmit only rotation of the second rotary member in the second direction to the first rotary member.