The ornamental design for an armrest, as shown and described.
FIG. 1 is a perspective view of two arm rests of the present invention mounted on a chair; one arm rest in a fully open position and the other arm rest partially pivoted up.
FIG. 2 is a perspective view of two arm rests of the present invention mounted on a chair, one arm rest in a fully open position and the other arm rest pivoted closed.
FIG. 3 is a top perspective view of the arm rest of the present invention in the open position.
FIG. 4 is a bottom perspective view of the arm rest of the present invention in the open position.
FIG. 5 is a bottom view of the arm rest of the present invention in the open position.
FIG. 6 is a top view of the arm rest of the present invention in the open position.
FIG. 7 is a side elevation view of the arm rest of the present invention in the open position.
FIG. 8 is the opposite side elevation view of the arm rest of the present invention in the open position.
FIG. 9 is a front view of the arm rest of the present invention in the open position; and,
FIG. 10 is a rear view of the arm rest of the present invention in the open position.
The broken lines showing a chair on which the arm rest of the present invention are mounted are included for the purpose of illustrating use and environment and form no part of the claim design.