Concentrator

FIG. 1 is a perspective view of a concentrator showing our new design;

FIG. 2 is a front elevation view of FIG. 1 ;

FIG. 3 is a rear elevation view of FIG. 1 ;

FIG. 4 is a left side elevation view of FIG. 1 ;

FIG. 5 is a right side elevation view of FIG. 1 ;

FIG. 6 is a top plan view of FIG. 1 ;

FIG. 7 is a bottom plan view of FIG. 1 ; and,

FIG. 8 is a perspective view of FIG. 1 showing the concentrator attached to an associated handle.

The broken lines in the drawings depict portions of the concentrator that form no part of the claimed design. The broken lines showing an associated handle in FIG. 8 depict environmental subject matter that form no part of the claimed design.