Patent Publication Number: US-D633406-S

Title: Piston pump

Description:
FIG. 1  is a front view of a first embodiment; 
         FIG. 2  is a rear view of the first embodiment; 
         FIG. 3  is a view from the lower end of  FIG. 1 ; 
         FIG. 4  is a view from the upper end of  FIG. 1 ; 
         FIG. 5  is a view from the right end of  FIG. 1 ; 
         FIG. 6  is a view from the left end of  FIG. 1 ; and, 
         FIG. 7  is a perspective view of the embodiment. 
       The broken lines are included for the purpose of illustrating elements of the piston pump that form no part of the claimed design.