Abstract: Provided are a pileus-gills type helium condenser and an apparatus, including the same, for condensing helium. The pileus-gills type helium condenser includes: a body having a hemispheric shape and formed of a highly thermally conductive metal; a plurality of cooling fins collectively having a pileus gills-like shape and arranged along the circumference of the body to be spaced apart from one another; and a through-hole formed in the center of the body to be adjacent to the cooling fins.

Abstract: A damping device that is capable of decreasing torsional vibration may include a driving element and a driven element spaced apart from each other, a receiving groove being shaped as an oval formed along a circular path with a given radius about an axis thereof and formed at the driving element, a carrier which is disposed at the driven element and disposed inside the receiving groove so as to contact an inner part thereof, and a magnetic substance disposed at the carrier, and wherein both sides of the receiving groove are provided with a repulsive force on the magnetic substance in a direction of the center of the receiving groove.

Abstract: A radiator apparatus for a vehicle may include a power transmitting mechanism configured to receive rotational force of an engine pulley and rotating a cooling fan thereby, and a driving belt tension maintaining device disposed between the power transmitting mechanism and the engine pulley and adjusting a relative distance therebetween to maintain tension of a driving belt sufficiently enough to transfer the rotation force of the engine pulley to the power transmitting mechanism, wherein the driving belt couples the power transmitting mechanism and the engine pulley.