Rigidizer for patient interface

FIG. 1 is a front perspective view of a rigidizer for patient interface showing a first embodiment according to our new ornamental design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is another perspective view thereof;

FIG. 9 is still another perspective view thereof;

FIG. 10 is a front perspective view of a rigidizer for patient interface showing a second embodiment according to our new ornamental design;

FIG. 11 is an enlarged front view thereof in isolation;

FIG. 12 is a front view thereof;

FIG. 13 is a rear view thereof;

FIG. 14 is a top view thereof;

FIG. 15 is a bottom view thereof;

FIG. 16 is a right side view thereof;

FIG. 17 is a front perspective view of a rigidizer for patient interface showing a third embodiment according to our new ornamental design;

FIG. 18 is a front view thereof;

FIG. 19 is a rear view thereof;

FIG. 20 is a top view thereof;

FIG. 21 is a bottom view thereof;

FIG. 22 is a right side view thereof;

FIG. 23 is a left side view thereof;

FIG. 24 is another perspective view thereof;

FIG. 25 is still another perspective view thereof;

FIG. 26 is a front perspective view of a rigidizer for patient interface showing a fourth embodiment according to our new ornamental design;

FIG. 27 is an enlarged front view thereof in isolation;

FIG. 28 is a front view thereof;

FIG. 29 is a rear view thereof;

FIG. 30 is a top view thereof;

FIG. 31 is a bottom view thereof; and,

FIG. 32 is a right side view thereof.

The broken lines represent environment or structure and do not form a portion of the claimed design.

The use of different types of shading, e.g., stipple-type shading, line shading, etc., is intended to indicate different materials.