Abstract: A polyphase AC generator of a type designed for installation in automobiles, has a so-called Lundell type rotor in which an exciting coil is enclosed by a plurality of pairs of finger type magnetic poles and which is rotated by a vehicle-mounted engine. The shape of the finger magnetic poles is modified to an irregular trapezoidal shape having a side opposite to a base displaced with respect to said base in the direction of rotation of the rotor, thus changing the waveform of magnetic flux flowing through the rotor and an armature core and thereby reducing magnetic noise of the generator under load operation.

Abstract: 2-Substituted benzimidazole compounds of the formula: ##STR1## wherein R.sub.1 is hydrogen, halogen, lower alkyl or lower alkoxy, and R.sub.2 is hydrogen or lower alkyl with the proviso that R.sub.1 and R.sub.2 do not stand for hydrogen simultaneously and, when R.sub.1 is hydrogen, R.sub.2 cannot mean a methyl group at 6th position on the pyridin-2-yl group or methyl an isobutyl group on the phenyl group; are useful as anti-inflammatory agents and/or analgesics.

Abstract: 2-Substituted benzimidazole compounds of the formula: ##STR1## wherein R.sub.1 is hydrogen, halogen, lower alkyl or lower alkoxy, and R.sub.2 is hydrogen or lower alkyl with the proviso that R.sub.1 and R.sub.2 do not stand for hydrogen simultaneously and, when R.sub.1 is hydrogen, R.sub.2 cannot mean a methyl group at the 6th position on the pyridin-2-yl group or methyl an isobutyl group on the phenyl group; are useful as anti-inflammatory agents and/or analgesics.

Abstract: An air bag device designed to protect passengers in a vehicle. In the device, an inflatable gas bag is inflated by a gush of high pressure gas which is discharged from a gas supply source through a gas discharging pipe and guided by a housing. The housing has defined therein large openings to introduce ambient air, and has mounted, at the region where the inflatable gas bag are mounted, gas permeable supporting plates and valve members urged against the gas-permeable supporting plates. The gush of the high pressure gas discharged through the gas discharging pipe sucks in and mixes with the ambient air introduced through the large openings in the housing. The resultant air-high pressure gas mixture passes through the supporting plates, opens the valve members and then, flows into the inflatable bag to inflate the latter.