Patent ID: 6193186
Filing Date: 2001-02-27
Classification: B65H

Abstract:
A tubular core assembly for roll of paper or other sheet material having:a hollow cylindrical core member formed of paperboard material, and an annular end member of plastic material within each opposite end portion of the core member, each end member having an outer annular surface secured to the inner annular surface of the core member and an inner surface shaped to receive a roll supporting chuck,each end member having at least two radially-projecting lugs at the respective end of the tubular core assembly positioned so as to be rotationally balanced, said core member having at least two lug-receiving notches at each end receiving said lugs of the respective end member to rotationally equalize continuous torque and axial chuck pressure from each end member to the core member, andeach end member having an inner annular surface at said end which is continuous and of constant radius around the circumference thereof.