I claim the ornamental design for a protective barrier element, as shown and described.
This application is related to commonly assigned, concurrently filed U.S. patent application Ser. No. 14/466,086 which is a continuation of U.S. patent application Ser. No. 13/726,709 filed Dec. 26, 2012 now published as (US 2013/0160176-A1).
FIG. 1 is a perspective view of a protective barrier element of the present invention attached to an ice hockey sock showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a left side view thereof, wherein the right side view is a mirror image of the left side;
FIG. 4 is a top view thereof;
FIG. 5 is a rear view thereof; and,
FIG. 6 is a bottom view thereof.
The broken lines in FIGS. 1-3 illustrating the hockey sock are provided for the purpose of illustrating the environment in which the protective barrier element is used, and designate unclaimed subject matter that forms no part of the claimed design or of a specific embodiment thereof. Repetitive drawing views have been omitted.