Abstract: An FM multiplex broadcasting and receiving system has an FM multiplex broadcast apparatus and an FM multiplex receiving apparatus. The FM multiplex broadcast apparatus has a reproducing device for reproducing, from a recording medium, an audio signal and character data associated with the audio signal recorded in the recording medium. The FM multiplex broadcast apparatus also includes a multiplex device and a frequency modulation device. The multiplex device multiplexes the audio signal with additional information such as the character data to generate a multiplex signal. The frequency modulation device frequency modulates a carrier with the multiplex signal to provide an FM multiplex broadcasting signal. The FM multiplexing receiving apparatus has a frequency demodulating device for frequency demodulating the FM multiplex broadcast signal to provide an audio signal and an additional information data signal, a displaying device displaying the additional information data signal.

Abstract: A graphite-free lubricating oil which comprises a base oil having dispersed therein 10 to 40% by weight of a carbohydrate and/or a derivative thereof whose particle size ranges from 10 to 150 .mu.m, 2 to 20% by weight of a film-boosting agent and 0.1 to 20% by weight of a dispersant. Moreover, the lubricating oil is free of black-colored substances such as graphite. Therefore, the oil permits the improvement of working surroundings and exhibits excellent properties such as formability through forging almost comparable to or even greater than that of the commercially available graphite-in-oil type lubricating oils. The lubricating oil can be used instead of the graphite-containing lubricating oils for warm forging, hot forging, rolling, tube-manufacturing, drawing and extrusion in place of the graphite-containing lubricating oils and ensures the improvement in the working surroundings and excellent lubricity.

Abstract: A brushless motor (10) comprises a stator yoke plate (16) made of a magnetic material, to which both main surfaces the first and the second flexible printed circuit boards (20) (22) formed integrally including a connecting part (24) are stuck respectively. On the first flexible printed circuit board (20), a plurality of driving coils (30) are arranged annularly and a conductor pattern for a speed detecting coil is formed inside the driving coils (30). On the integrated stator yoke plate (16) and the first and second flexible printed circuit boards (20) (22), a penetrated hole (18) for passing through a rotor shaft (54) is formed generally in the center. A tongue (36) is formed generally in protrusion inwardly from the periphery defining the penetrated hole (18) on which a connecting conductor pattern connected to the speed detecting coil is formed.