Drive shafts

A drive shaft, comprising:

• a first tube body having one or more first body channels defined through a wall thickness thereof;
• a second tube body concentrically disposed relative to the first tube body and connected to the first tube body at a first end portion and a second end portion, wherein the second tube body includes one or more second body channels defined through a wall thickness thereof,
• a sleeve configured to connect to one or both of the first and second tube bodies at respective ends thereof via a first fastener and a second fastener, wherein the sleeve separately connects to the first and second tube bodies at a first axial location and a second axial location,
• wherein the second tube body includes a portion configured to contact an inner diameter of the first tube body where there is a connection between the first and second tube bodies, wherein the sleeve is connected to the second tube body,
• wherein the first and second tube bodies are connected together at the first axial location through the first fastener and the second axial location through the second fastener, wherein the first fastener extends only through the wall thickness of the first tube body, and a wall thickness of the sleeve, and wherein the second fastener extends only through the wall thickness of the second tube body and the wall thickness of the sleeve.

A drive shaft, comprising:

• a first tube body having one or more first body channels defined through a wall thickness thereof;
• a second tube body concentrically disposed relative to the first tube body and connected to the first tube body at a first end portion and a second end portion, wherein the second tube body includes one or more second body channels defined through a wall thickness thereof,
• a first sleeve configured to connect to the first tube body at a first axial location at an axial end of the first tube body;
• and
• a second sleeve configured to connect to the second tube body at a second axial location at an axial end of the second tube body, wherein the second axial location is different than the first axial location.