US 12,252,363 B2
Mechanical torque activated chuck with material preservation features
Reimund K Brettschneider, Marietta, GA (US)
Filed by Reimund K Brettschneider, Marietta, GA (US)
Filed on Dec. 23, 2021, as Appl. No. 17/645,768.
Claims priority of provisional application 63/230,342, filed on Aug. 6, 2021.
Prior Publication US 2023/0041506 A1, Feb. 9, 2023
Int. Cl. B65H 19/28 (2006.01); B65H 75/24 (2006.01)
CPC B65H 19/28 (2013.01) [B65H 75/246 (2013.01)] 19 Claims
OG exemplary drawing
 
1. 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, wherein the spacer member is configured to contact a distal surface of a core of a roll of material, wherein the spacer member is operative to impede motion of the core of the roll of material along the axis of rotation, and 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; and
a follower member arranged in the cam seat.