Mechanical torque activated chuck with material preservation features

A chuck comprising:

• a central shaft defining an axis of rotation;
• a cam seat defined by the central shaft;
• a support portion partially defining a first cavity having a first orifice at a distal end of the support portion, the first orifice operative to engage the central shaft;
• a spacer member arranged on a portion of the support portion, the spacer member operative to impede motion of a core of a roll of material along the axis of rotation, wherein the spacer member is disposed on an outer surface of the support portion;
• a second orifice defined by the support portion, wherein the portion is located between the distal end of the support portion and the second orifice, wherein the portion is located at a predetermined non-zero distance from the distal end of the support portion, and wherein a length of the spacer member is equivalent to a width of the second orifice;
• an expansion portion arranged in the second orifice such that the expansion portion is operative to move radially in the second orifice with respect to the axis of rotation, wherein the expansion portion has an arcuate profile;
• and
• a follower member arranged in the cam seat.

A chuck comprising:

• a central shaft defining an axis of rotation;
• a cam seat defined by the central shaft;
• a support portion partially defining a first cavity having a first orifice at a distal end of the support portion, the first orifice operative to engage the central shaft;
• a spacer member arranged on a portion of the support portion, the spacer member operative to impede motion of a core of a roll of material along the axis of rotation, wherein the spacer member is disposed on an outer surface of the support portion;
• a second orifice defined by the support portion, wherein the portion is located between the distal end of the support portion and the second orifice, wherein the portion is located at a predetermined non-zero distance from the distal end of the support portion, and wherein a length of the spacer member is equivalent to a width of the second orifice;
• an expansion portion arranged in the second orifice such that the expansion portion is operative to move radially in the second orifice with respect to the axis of rotation, wherein the expansion portion has a first region having a first profile at a distal end of the expansion portion;
• and
• a follower member arranged in the cam seat.