Piston Pump

FIG. 1 is a rear, left, top perspective view of an embodiment of a piston pump showing our new design;

FIG. 2 is a rear, right, bottom perspective view thereof;

FIG. 3 is an enlarged perspective view thereof, as indicated in FIG. 2 ;

FIG. 4 is a front, right, top perspective view thereof;

FIG. 5 is a front, left, bottom perspective view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a front elevation view thereof;

FIG. 8 is a left side view thereof;

FIG. 9 is a right side view thereof;

FIG. 10 is a top plan view thereof; and,

FIG. 11 is a bottom plan view thereof.

The broken lines of even length shown in the drawings illustrate portions of the piston pump that form no part of the claimed design. The broken lines of uneven length shown in FIG. 2 indicate the subject matter shown in FIG. 3 .