Propeller shaft crash collapse assembly

A shaft assembly, comprising:

• a joint assembly having a first joint member, a second joint member and one or more third joint members drivingly connecting said first joint member to said second joint member;
• a first shaft having an outer surface, a first end portion and a second end portion;
• wherein at least a portion of said first shaft is drivingly connected to at least a portion of said second joint member;
• wherein a first increased diameter portion circumferentially extends form at least a portion of said outer surface of said second end portion of said first shaft;
• wherein a second increased diameter portion having a first end portion and a second end portion circumferentially extends from at least a portion of an outermost surface of said first increased diameter portion of said first shaft;
• wherein a wall portion connects said first increased diameter portion of said first shaft to said second increased diameter portion of said first shaft;
• a second shaft;
• wherein at least a portion of a first end portion of said second shaft is drivingly connected to at least a portion of said second increased diameter portion of said first shaft;
• wherein upon the occurrence of a crash condition a force is applied onto said wall portion of said first shaft until said wall portion fractures allowing at least a portion of said joint assembly and/or said first shaft to translate axially into a hollow portion of said second shaft;
• and
• wherein said first shaft further comprises one or more first crash collapse features, one or more second crash collapse features, and/or one or more ribs;
• wherein said one or more first crash collapse features circumferentially extend inward into said wall portion of said first shaft from at least a portion of said outer surface and/or an inner surface of said wall portion;
• and
• wherein said one or more ribs circumferentially extend along at least a portion of an inner surface of said second increased diameter portion of said first shaft.