Patent ID: 6978719

Claim:
A railway car comprising: a car body; a subframe disposed below a floor of said car body with a clearance therebetween; a bogie disposed below said subframe with a clearance therebetween; wherein said subframe is capable of traveling in synchronism with said car body in the direction of travel of said car body; said car body and said subframe are connected via a first center pin protruding downward from said car body or a first center pin protruding upward from said subframe toward said car body; said subframe and said bogie are connected via a second center pin protruding downward from said subframe or a second center pin protruding upward from said bogie toward said car body; said car body is capable of rotating freely in a width direction with a center of rotation corresponding to a longitudinal direction of the car body; either both width-direction ends of a lower surface of said car body or both width-direction ends of an upper surface of said subframe are recessed in an arc-shape with a center corresponding to said center of rotation; and either the upper surface of said subframe or the lower surface of said car body is in contact with said arc-shaped surfaces via rollers.