Ripper excavation tool

A ripper excavation tool comprising a tool body mounted for rotation from an arm of an excavation machine, said ripper excavation tool further comprising:

• at least one ripper tooth mounted to the tool body and disposed for ripping engagement with a substrate, said at least one ripper tooth comprising:
• a first ripper tooth portion with a first ripper tooth tip disposed at a forward end thereof for ripping engagement with the substrate,
• at least a second ripper tooth portion with a second ripper tooth tip disposed at a forward end thereof for ripping engagement with the substrate,
• said first ripper tool portion and said second ripper tooth portion being laterally spaced apart in a general direction along the axis of rotation of said ripper excavation tool relative to the arm, and
• said first ripper tooth portion and said second ripper tooth portion being angularly spaced apart in a general direction of substrate ripping motion,
• each said first ripper tooth portion and each said second ripper tooth portion being disposed at predetermined angles from a tangent to an arc of rotation extending generally through said first ripper tooth tip and said second ripper tooth tip with an arc center near an axis of rotation of said excavation tool body, and
• said first ripper tooth portion being disposed on a first axis and said second ripper tooth portion being disposed on a second axis, said first axis and said second axis being different.