Piston structure for an internal combustion engine has holes in a piston's hubs fitted with a bolt placed so as to float and be secure against side movement

摘要

A piston bolt (19) is secured against side movement by means of sealing rings held in retaining grooves (20) and placed close to its front sides. One or more retaining grooves has a drilled hole (21) directed radially outwards. One or more sealing rings has a hook pointing radially outwards. An independent claim is also included for a sealing ring for a piston structure for an internal combustion engine.