Abstract: A negative thermal expansion material having a negative thermal expansion coefficient according to the present invention is represented by Zr2?aMaSxP2O12+?, where M is at least one selected from Ti, Ce, Sn, Mn, Hf, Ir, Pb, Pd, and Cr; a is 0?a<2; x is 0.4?x?1; and ? is a value defined as to satisfy a charge neutral condition. The present invention makes it possible to provide a negative thermal expansion material, a composite material and a method for producing a negative thermal expansion material that can realize reduction in cost and density reduction.

Abstract: A defroster structure for a vehicle having a defroster member disposed in the vicinity of a cowl, and a nozzle opening of the defroster formed in the vicinity of a window shield of an instrument panel comprising an enclosed space surrounded by an inner wall and a tray-section-shaped defroster member under the inner wall in the vicinity of the window shield of the instrument panel, a plurality of fins integrally formed with the defroster member for forming the nozzle opening, said nozzle opening formed at the foremost position of the instrument panel in the vicinity of the window shield in the longitudinal direction of a vehicle. Thus, the drawbacks of the conventional defroster structure can be eliminated by providing a defroster nozzle opening at an instrument panel in the vicinity of a window shield.

Abstract: A wind direction adjusting mechanism for an air conditioner which has an air diffuser barrel supported to a rotational shaft to rotate in elevational or lateral directions in a bezel of a side ventilator, longitudinal or lateral blades pivotally secured in lateral or longitudinal directions in the barrel, a cam rotatably engaged with the rotational shaft, a rod engaged with the cam for operating to rotate the longitudinal or lateral blades, rotary drive means coupled with said cam, and a frictional clutch for producing a slip by a resistance of a predetermined value to couple the cam with the drive shaft.