Crank handle drive device

A handle attachment device, the device comprising:

• a body having a first portion, a second portion, and an intermediate portion, each of the first portion and second portion defining at least one fastener opening, wherein each of the at least one fastener opening defined by the first portion is alignable with one of the at least one fastener opening defined by the second portion, the first portion and the second portion being clampable on a crank when the device is in a mounted position, the crank having a crank rotational axis, wherein the intermediate portion extends between the first portion and second portion, wherein a portion of the crank along the crank rotational axis is disposed between the at least one fastener opening defined by the first portion and the intermediate portion when the device is in the mounted position, wherein the at least one fastener opening comprises a first fastener opening, a second fastener opening, and a third fastener opening;
• and
• a drive shaft coupled to the body, the drive shaft having a drive shaft axis, an end distal to the body, and an engagement head coupled to the end, wherein the drive shaft axis is coincident with the crank rotational axis when the body is clamped to the crank in the mounted position.