Patent ID: 6644390
Filing Date: 2003-11-11
Classification: F01P

Abstract:
A combination comprising:a radiator having a body portion, heat transfer fins extending from the body portion, an inlet opening and a discharge opening formed in the body portion, and wherein the radiator is constructed and arranged to receive a coolant fluid through the inlet opening, to flow the coolant fluid through the body wherein heat is transferred from the fluid to the body and dissipated to the atmosphere through the fins, and to discharge the fluid from the radiator through the discharge opening; a neck extending from said body and forming a first opening for filling the body with the coolant fluid, said neck comprising a plurality of threads and a second opening disposed in said neck; and a radiator cap comprising a plurality of threads configured to engage said neck threads, said radiator cap configured to rotate to a fully closed position, said radiator cap threads having a thread stop and said neck threads having a thread stop, said neck threads comprising a clearance which permits said radiator cap to be biased in an axial direction without any rotation when not in said fully closed position and when the fluid held in the radiator body is under pressure and so that the neck thread stop is configured to contact the radiator cap thread stop to prevent the radiator cap from rotating when biased in the axial direction by the fluid under pressure.