US 12,111,509 B2
Bobbin for winding optical fiber
Tsuyoshi Akamatsu, Mie (JP)
Assigned to Fujikura Ltd., Tokyo (JP)
Appl. No. 17/786,814
Filed by FUJIKURA LTD., Tokyo (JP)
PCT Filed Dec. 16, 2020, PCT No. PCT/JP2020/046892
§ 371(c)(1), (2) Date Jun. 17, 2022,
PCT Pub. No. WO2021/125208, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 2019-230472 (JP), filed on Dec. 20, 2019.
Prior Publication US 2023/0021882 A1, Jan. 26, 2023
Int. Cl. G02B 6/44 (2006.01); B65H 75/14 (2006.01)
CPC G02B 6/4457 (2013.01) [B65H 75/14 (2013.01); B65H 2701/32 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A bobbin for winding optical fiber comprising:
a body around which an optical fiber is wound;
a flange that extends in a radial direction from the body; and
a seal that is bonded to a side surface of the flange facing an axial direction of the bobbin, wherein
the flange has a void that extends through an entire thickness of the flange,
a part of the seal extends across and covers at least a part of the void, and
at least a part of a portion of the seal is non-adhesive, wherein the portion covers the void.