The ornamental design for a bladelessturbineimpeller, as shown and described.
FIG. 1 is a perspective view of a first embodiment of a bladeless turbine impeller showing our new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front-side elevational view, the rear-side elevational view, the right-side elevational view and the left-side elevational view being identical;
FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 2;
FIG. 6 is a perspective view of a second embodiment of a bladeless turbine impeller showing our new design;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof;
FIG. 9 is a front-side elevational view, the rear-side elevational view, the right-side elevational view and the left-side elevational view being identical; and,
FIG. 10 is a cross-sectional view taken along line 10-10 of FIG. 7.
The broken lines represent the designation lines for the cross-sectional views and form no part of the claimed design.