Patent ID: 11965597
Assignee: SEMES CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A piston assembly comprising:
a piston body;
a piston rod connected to the piston body;
a first groove formed in an outer surface of the piston body;
a particle discharge flow path extending from an internal space of the piston body to the outer surface of the piston body;
a second groove formed in the outer surface of the piston body to be spaced apart from the first groove in a moving direction of the piston body; and
a first connection flow path connecting an inner side surface of the second groove and a side surface of the piston body in the moving direction, wherein the first connection flow path is connected to a surface of the piston body onto which the piston rod is connected.