Elliptical Piston for a Rotary Steerable Tool

FIG. 1 is an upper perspective view showing the elliptical piston of Applicant's new design.

FIG. 2 is a first lower perspective view of the elliptical piston of FIG. 1 .

FIG. 3 is a second lower perspective view of the elliptical piston of FIG. 1 .

FIG. 4 is a front elevation view of the elliptical piston of FIG. 1 , the rear elevation view being an identical mirror image thereto.

FIG. 5 is a left side elevation view of the elliptical piston of FIG. 1 , the right side elevation view being an identical mirror image thereto.

FIG. 6 is a top plan view of the elliptical piston of FIG. 1 .

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

FIG. 8 is an upper perspective view of the elliptical piston of FIG. 1 , in combination with a rotary steerable tool for context, shown in broken lines, the rotary steerable tool forming no part of the claimed design.

The broken lines in the drawings illustrate portions of the elliptical piston which form no part of the claimed design.