Patent ID: 9429207
Filing Date: 2016-08-30
CPC Classification: B32B,F16F,Y10T

Claim Text:
1. A cylinder apparatus comprising a cylinder having a hydraulic fluid sealed therein, a piston axially slidably fitted in the cylinder, and a rod, a first axial end of the rod being connected to the piston and a second axial end of the rod extending to an outside of the cylinder, the rod being a plated component obtained by plating one of a steel bar and a steel pipe, and the plated component comprising: a plated portion having been subjected to quenching and plating; a non-plated portion provided at a position axially different from the plated portion, the non-plated portion having been subjected to quenching and not subjected to plating; and a machined portion provided between the plated portion and the non-plated portion, the machined portion having been subjected to one of plastic working and cutting and not subjected to either of quenching and plating.