Abstract: An airbag is manufactured by sewing a base fabric woven with a first polar fiber by means of a sewing thread. The sewing thread is made up of a yarn formed from a second polar fiber such as nylon 66, and the yarn is subjected to a lubrication treatment using a lubricating agent that consists of a polar group-containing compound having an action to improve lubricity of the sewing thread or that contains mainly such a polar group-containing compound.

Abstract: An airbag is manufactured by sewing a base fabric woven with a first polar fiber by means of a sewing thread. The sewing thread is made up of a yarn formed from a second polar fiber such as nylon 66, and the yarn is subjected to a lubrication treatment using a lubricating agent that consists of a polar group-containing compound having an action to improve lubricity of the sewing thread or that contains mainly such a polar group-containing compound.

Abstract: The present invention provides a clad steel plate of a base material and a cover material attached to the base material. The base material has holes with rising rims and the rims pass through the covering material and expand over its surface to unite the base and covering materials.

Abstract: A differential gear transmitting force from an engine to a pair of wheels, includes a differential gear case receiving driving force of an engine and rotatably driven having a casing body and an end cover, a pair of side gears connected with the wheels respectively, pinion gears having a first gear portion meshed with the side gear and a second gear portion meshed with other pinion gear outside in the axial direction of the side gears, housing holes receiving each pinion gear slidably and rotatably and supporting a whole periphery of the second gear portion of the pinion gear except for a meshing portion meshed with other pinion gear, and a plate member fixed to the casing body and being able to bear the thrust force of the pinion gear.

Abstract: An object of the present invention is to provide a rotor of a fluid machine in which the rotor can be made light in weight and moment of inertia of the rotor can be reduced and the rotor can be easily balanced in its rotating direction. In this rotor of a fluid machine, a fluid is compressed and pumped by a pair of rotors engaged with each other. A hollow portion is formed within a tooth stripe portion of one rotor. A thickness forming portion for a balance correction is formed in an opening portion of this hollow portion to balance the rotor in its rotating direction and is projected on an inner circumferential side of the hollow portion.

Abstract: A permanent paper is disclosed which employs as a stock pulp slurry containing at least one kind of filler and aluminum sulfate, a hydrophobic modified rosin emulsion sizing agent and a water-soluble alkaline salt, wherein the pH where said filler is dispersed in water to form 10% of a dispersion is 4-8, the pH of said pulp slurry is controlled within 6.5-7.5 and an alkaline salt of an acid having a pKa of 5-14 at a 25.degree. C. aqueous solution is coated onto said paper and the pH of the coated paper extract in cold water is 7.5-9.0.

Abstract: A limited slip differential for limiting differential rotation between a differential casing and axles via a frictional connection includes a pinion shaft rotating integrally with the differential casing and a pinion gear attached rotatively to the pinion shaft. A side gear engages with the pinion gear and is mounted loosely with respect to the axles. A first cam portion formed on the side gear engages with a second cam portion formed on a driving member which is spline-engaged with one of the axles, supporting the side gear and supported by and centered on the differential casing. A frictionally connecting clutch is disposed between the driving member and the differential casing.

Abstract: A device for making or preparing liquid coffee comprises a main body having a pair of support rails, a dripper suspended from these rails. The dripper have a filter attached thereto and an outlet formed at the bottom thereof and containing coffee powder therein. A pot is located under the dripper and have an opening which is opposed to the outlet of the dripper at a certain interval. Hot water is supplied into the dripper to make liquid coffee, which is collected in the pot, passing through the outlet of the dripper and the opening of the pot. The dripper includes a holder attached to the paired support rails, a member connected to the holder and movable up and down. The movable member is mounted on the top of the pot to enclose the space between the outlet of the dripper and the opening of the pot to thermally shield liquid coffee flowing through the space from outside air when it is at its lower positions.

Abstract: There is disclosed a carrier system for carrying a silicon wafer or a cassette accommodating the wafers to arbitrary positions by loading an arm with them.

Abstract: There is disclosed an apparatus for positioning a silicon wafer which comprises: two pieces of supporting boards, fixed to an upper plate, for supporting both side portions of the silicon wafer; an adsorbing disk, disposed in a vertically movable and rotatable manner between the supporting boards, for supporting the silicon wafer in its central position, this adsorbing disk having its upper surface formed with adsorbing holes; a holding member disposed in a vertically movable manner on the circumference of the adsorbing disk between the supporting boards, this holding member having a movable holder which moves inwards by pushing the edge of the silicon wafer when going up while raising the silicon wafer supported on the adsorbing disk; and a photoelectric detector, fitted to a part of the supporting boards, for detecting the edge of an orientation flat of the silicon wafer. The silicon wafer loaded on the supporting boards is raised while being adsorbed by the adsorbing disk.

Abstract: A carrier system which carries electronic parts mounted on an arm to arbitrary positions within a clean room is disclosed.