FIG. 1 is a top, front, left side perspective view of an oral sleep appliance lower component showing my new design;
FIG. 2 is a front elevation thereof;
FIG. 3 is a rear elevation thereof;
FIG. 4 is a right side elevation thereof with the left side being a mirror image;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a cross-section view along line 7-7 of FIG. 5, rendered at an enlarged scale; and,
FIG. 8 is a cross-section along line 8-8 of FIG. 5, rendered at an enlarged scale.
The broken line portion of the figure drawings is included to show unclaimed subject matter only and forms no part of the claimed design.