Patent ID: 7532799

Claim:
A fiber optic telecommunications cable assembly comprising: a main fiber optic cable; a tether cable that branches from the main fiber optic cable at a breakout location; a breakout block mounted to the main fiber optic cable at the breakout location, the breakout block defining a straight-through channel in which the main fiber optic cable is received and a breakout channel that branches out from the straight-through channel, the breakout block including first and second half-pieces joined at oppositely positioned first and second seams, the first seam being positioned adjacent the straight-through channel and the second seam being positioned adjacent the breakout channel; an optical fiber structure that extends from the main fiber optic cable, through the breakout block to the tether cable; and an over-mold that covers the breakout block and at least a portion of the main fiber optic cable; wherein the first and second half-pieces of the breakout block include a first set of inner and outer overlap members that extend along the second seam and overlap one another to provide a first barrier that prevents over-mold material from entering the breakout block through the second seam.