公开(公告)号：US20240067479A1

公开(公告)日：2024-02-29

申请号：US18502900

申请日：2023-11-06

Applicant: Sonoco Development, Inc.

Inventor： Markku RONNILA ,  Ismo KERVINEN ,  Andrei KLIMENKO

IPC: B65H18/10 ,  B65H16/02 ,  B65H16/10 ,  B65H18/02

CPC classification number: B65H18/10 ,  B65H16/02 ,  B65H16/103 ,  B65H18/02 ,  B65H2301/41461 ,  B65H2403/72

Abstract: An expansible chuck for holding hollow cylindrical cores used for winding and unwinding sheet material. A portion of the chuck body nearest the flange is stepped up so that the diameter of the chuck near the flange is slightly larger than the diameter of the rest of the chuck. The stepped up portion centers the chuck within the core which helps the expanding elements to uniformly grip the core.

公开(公告)号：US20220177248A1

公开(公告)日：2022-06-09

申请号：US17110970

申请日：2020-12-03

Applicant: Sonoco Development, Inc.

Inventor： Markku RONNILA ,  Ismo KERVINEN ,  Andrei KLIMENKO

IPC: B65H18/10 ,  B65H16/02 ,  B65H16/10 ,  B65H18/02

Abstract: An expansible chuck for holding hollow cylindrical cores used for winding and unwinding sheet material. A portion of the chuck body nearest the flange is stepped up so that the diameter of the chuck near the flange is slightly larger than the diameter of the rest of the chuck. The stepped up portion centers the chuck within the core which helps the expanding elements to uniformly grip the core.