Abstract: An optical information recording carrier comprises an optical recording layer provided on a transparent substrate, a film coating layer laminated with out adhesion on said optical recording layer, and further a fixing layer laminated thereon to fix said film coating layer.

Abstract: An optical recording medium wherein recording information has been recorded as pits, comprises an absorptive layer and a reflective layer placed thereon, the absorptive layer having, on the surface, concave portions thermally deformed by heat generated upon irradiation of light beams, and the reflective layer having concave pits formed by deformation as a consequence of the thermal deformation of the absorptive layer and covering said concave portions of the absorptive layer in such a state that the concave portions are not exposed.

Abstract: An air cooling device including a first water spray device, an air cooling part including a filler wherein cooling water sprayed from the first water spray device is brought into direct contact with intake air so that the intake air is cooled by the sprayed water through heat exchange therebetween on the surface of the filler, a first water reservoir that receives and reserves the water dropped from the filler and a cooling tower for rapidly cooling water to be sprayed in the air cooling part to a steady state condition prior to starting of an electrical apparata coupled to the air cooling device and to be cooled thereby. In the cooling tower, water from the first reservoir is sprayed into a second filler and thereby evaporatively cooled. The cooled water is collected in a second water reservoir and circulated therefrom to the first water spray device by means of a pump.

Abstract: A post for a guard rail used on a highway. Said post is made of an aluminum cast alloy, and is formed in an I-shape in a horizontal cross section, having a central web and front and rear flanges, and being wider at its lower portion. A mechanical neutral plane of the post along the widthwise direction thereof is formed in an S-shape, so as to provide sufficient plasticity and supporting ability to absorb an impact load of a vehicle and to protect a driver from injury.