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

Claim 9:
10. An air cylinder comprising:
a cylinder body;
a gas inlet/outlet port connected to the cylinder body; and
a piston assembly disposed in the cylinder body,
wherein the piston assembly includes a piston body; a piston rod connected to the piston body; a first groove formed in an outer surface of the piston body; a sealing ring disposed in the first groove; 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; a solid lubricant having a ring shape and disposed in the second groove; and a particle discharge flow path extending from an internal space of the piston body to a portion of the outer surface of the piston body adjacent to the first groove,
wherein the particle discharge flow path extends from the piston body to an internal space of the piston rod, and
wherein the solid lubricant has a ring shape, and is divided into a plurality of portions in a circumferential direction.