US 12,497,233 B2
Metal foil core
In Cheol Shin, Jeongeup-si (KR); In Soo Jung, Jeongeup-si (KR); and Jae Hoon Jung, Jeongeup-si (KR)
Assigned to SK NEXILIS CO., LTD., Jeongeup-si (KR)
Filed by SK NEXILIS CO., LTD., Jeongeup-si (KR)
Filed on Jun. 29, 2023, as Appl. No. 18/216,296.
Claims priority of application No. 10-2022-0149161 (KR), filed on Nov. 10, 2022.
Prior Publication US 2024/0158157 A1, May 16, 2024
Int. Cl. B65H 75/26 (2006.01); B65D 85/672 (2006.01); B65H 18/28 (2006.01)
CPC B65D 85/672 (2013.01) [B65H 18/28 (2013.01); B65H 2701/173 (2013.01); B65H 2701/18442 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A metal foil core comprising:
a winding member around which a metal foil is wound;
a first protrusion member protruding from the winding member in a first direction (direction of arrow FD) of a first axis direction (X-axis direction);
a second protrusion member protruding from the winding member in a second direction (direction of arrow SD) opposite to the first direction (direction of arrow FD) of the first axis direction (X-axis direction); and
a first inducing groove defined on the first protrusion member that is disposed between a first end and a second end of the first protrusion member in the first axis direction (X-axis direction),
wherein the first protrusion member is supported by a support part of an accommodation device, the first inducing groove induces a sag and a deformation to be intensively generated at a portion of the first protrusion member in which the first inducing groove is formed.