Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1992-01-27
1994-10-18
Jillions, John M.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
2426135, B65H 7518
Patent
active
053560930
ABSTRACT:
A tubular core assembly for a roll of paper or other sheet material has a hollow cylindrical core member formed by multiple wraps of paperboard material. An annular collar is located within each opposite end portion of the core member, each collar being a rigid body of non-isotropic material and having an outer annular surface secured to the inner annular surface of the core member and an inner annular surface shaped to receive a roll supporting chuck. The ratio of collar wall thickness to core member wall thickness is in the range of from about 1.3:1 to about 2:1.
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