US 12,405,437 B2
Fiber carrying structure with rip cord and related method
Terry Lee Ellis, Hickory, NC (US); Martin Cervantes Martinez, Maiden, NC (US); and Ellen Anderson Stupka, Statesville, NC (US)
Assigned to CORNING RESEARCH & DEVELOPMENT CORPORATION, Corning, NY (US)
Filed by CORNING RESEARCH & DEVELOPMENT CORPORATION, Corning, NY (US)
Filed on Sep. 15, 2023, as Appl. No. 18/368,792.
Application 18/368,792 is a continuation of application No. 17/007,077, filed on Aug. 31, 2020, granted, now 11,774,694.
Claims priority of provisional application 62/895,280, filed on Sep. 3, 2019.
Prior Publication US 2024/0004154 A1, Jan. 4, 2024
Int. Cl. G02B 6/44 (2006.01); G02B 6/46 (2006.01)
CPC G02B 6/4431 (2023.05) [G02B 6/44384 (2023.05); G02B 6/566 (2023.05)] 20 Claims
OG exemplary drawing
 
1. An optical fiber cable, comprising:
a cable jacket having an outer surface defining an outermost surface of the optical fiber cable; and
a subunit disposed within the cable jacket, the subunit comprising:
a stack of optical fiber ribbons, each of the optical fiber ribbons comprising a respective plurality of optical fibers arranged in a planar configuration;
a subunit jacket that surrounds and is substantially conformal to the stack of optical fiber ribbons; and
a water-blocking yarn disposed within the subunit jacket, the water-blocking yarn having a break strength less than 75 N;
wherein the water-blocking yarn extends longitudinally along an outer surface of the stack of optical fiber ribbons within the subunit jacket, and wherein the stack of optical fiber ribbons twists around a longitudinal axis of the subunit jacket along a length of the subunit jacket.