Abstract: An apparatus for polishing semiconductor wafers is provided which is capable of efficiently polishing the semiconductor wafers one-by-one by a multi-step polishing, capable of preventing occurrence of spots and scratches due to attachment and detachment to and from top rings, and capable of polishing the semiconductor wafers with high-flatness surfaces. The polish apparatus includes a plurality of holding shafts for holding the semiconductor wafers, a polish table on which the semiconductor wafers are placed and polished, and means for upwardly and downwardly moving the semiconductor wafers which are held by the holding shafts, in which the upward and downward movement of the holding shafts and the attachment and detachment of the semiconductor wafers to and from the holding shafts are independently carried out for each of the holding shafts.

Abstract: A titanium alloy having improved heat resistance in addition to the inherent properties of lightness and corrosion resistance. The alloy consists essentially of, by weight %, Al: 5.0-7.0%, Sn: 3.0-5.0%, Zr: 2.5-6.0%, Mo: 2.0-4.0%, Si: 0.05-0.80%, C: 0.001-0.200%, O: 0.05-0.20%, optionally further one or two of Nb and Ta: 0.3-2.0%, and the balance of Ti and inevitable impurities. A method of producing parts from this alloy comprises subjecting the titanium alloy of the above described alloy composition to heat treatment at a temperature of .beta.-region, combination of rapid cooling and slow cooling or combination of water quenching and annealing, hot processing in .alpha.+.beta. region, solution treatment and aging treatment.

Abstract: A paint composition comprising, as a leveling agent, 0.01 to 3.0 parts by weight of a polyfluorinated carbon chain-containing compound and 0.01 to 3.0 parts by weight of a silicone oil per 100 parts by weight of a film forming component and being capable of forming a film being excellent in water- and oil-repelling property and stain resistance, and painted articles being excellent in water- and oil-repelling property and stain resistance can be provided.

Abstract: A thermo-shrinking film cutting mechanism used in a labeling machine, including a plurality of cutter units mounted on locating frames and equiangularly spaced around a center guide shaft, each cutter unit including a crank shaft, axle bearings, a coupling plate, an index plate, a locating plate, a cutter holder, a cutter blade and a clamping plate, a transmission mechanism driven to rotate said cutter units, causing said cutter units to cut a thermo-shrinking film, the transmission mechanism including a transmission disk having a plurality of receiving holes, which hold a respective axle bearing, which supports the eccentric upper section of one crank shaft, enabling the crank shafts of the cutter units to be rotated synchronously when the crank shaft of one cutter unit is rotated by a transmission belt through a transmission wheel, the cutter holder being slidably mounted in a transverse bottom groove on the locating plate and fixed in place by an adjustment screw to hold the respective cutter blade at the

Abstract: A method for pulling a <110> single-crystal silicon aims at preventing the crystal from being cut in diameter-reducing and suppress the increase in cost due to the cut prevention to the minimum. In the step for forming a diameter-reduced portion performed prior to the step for growing a <110> single-crystal silicon by the Czochralski method, a magnetic field having a strength of 500 gauss or more is applied and while suppressing a melt surface vibration and temperature variation, the crystal diameter is reduced to 2.00 mm or smaller.

Abstract: A wrench torque value callibrating apparatus having a flexible main rod coupled to an actuating member, and a torque meter with a probe disposed in contact with the flexible main rod for measuring the torque value of the wrench to be calibrated, wherein two flexible auxiliary rods are coupled to the actuating member in parallel to the flexible main rod for fine calibration adjustment.

Abstract: A golf club head having a plurality of pores spaced along scoring lines of a face in front of a recessed top chamber thereof, and a circular through hole at the center of a back wall thereof behind the recessed top chamber for guiding air out of the recessed top chamber when striking the ball.

Abstract: A thermo-sensitive actuator capable of operating without the need of providing a temperature detector as a separate member. The actuator includes a stator made of a magnetic material to form a yoke. A rotor is rotatably provided in an opening provided in the stator. The actuator further includes pole pieces for magnetically connecting the stator and the rotor. A magnetic source is provided in any of the magnetic paths formed by the constituent elements. A thermo-sensitive magnetic material, which shows a change in magnetic characteristics, e.g. permeability, saturated magnetic flux density, or residual magnetic flux density, according to temperature, is provided in a part of the magnetic paths.

Abstract: The present invention is directed to a connecting structure of a cover plate for a network floor. The floor supports or floor plate bodies for the network floor are integrally formed with a hollow portion, a frame rim portion, and a central pillar on the center portion the floor supports or floor plate bodies. Locking rims are provided on the periphery of the cover plate which engage with grooves provided in the frame rim portion of the floor supports or in the floor plate bodies. Long side covers are also provided and have rim portions extending downward on the long sides thereof. The rim portions of the long side covers also engage the grooves of the frame rim portion of the floor supports or the floor plate bodies. In addition, a central cover is provided that has locking rims which engage grooves of the two adjacent floor supports or floor plate bodies. The assembled structure has improved strength that prevents the network floor from sliding or deforming.

Abstract: A folding collapsible jogging exerciser includes a bottom frame, two upright supports and two handlebars raised from the bottom frame, a top frame fastened to the upright supports and coupled to the handlebars, and a rack having one end pivoted to the upright supports on which the user jogs, wherein a stand is pivoted to the rack and turned to support the free end of the rack on the floor between two tilted positions; one upright support has a lug for securing the rack in a collpased position; the bottom frame has a U-shaped frame bar, two movable frame bars hinged to the U-shaped frame bar, and a connecting frame bar detachably connected to the movable frame bars by screws to secure the bottom frame between an extended position and a collapsed position, the connecting frame bar being equipped with wheels, that make the jogging exercise easy to move.

Abstract: A module plug includes a circuit board mounted in a mounting space on a casing to hold a front terminal rack and a rear terminal rack and a plurality of terminals in terminal holes on the front terminal rack and the rear terminal rack, a top cover covered on the casing and fastened to the rear terminal rack to hold a signal line, permitting the electrical wires of the signal line to be respectively forced into contact with the terminals on the rear terminal rack, the circuit board being convenient for the installation of an interference prevention circuit to prevent the terminals from interfering with one another.

Abstract: A method for efficiently fabricating semiconductor wafers of good planarization without utilizing chemical solutions of high etching rate is disclosed. The method slices a single-crystal ingot into slices of wafers. The edge of each wafer is chamfered. A lapping step is carried out to planarize the chamfered wafer. Both side surfaces of the wafer are then polished. Next, the wafer surface is mirror polished. Finally, the wafer is cleaned.

Abstract: A ratchet wrench having a lamp circuit assembly mounted in a stepped longitudinal center through hole defined within a ratchet unit thereof, the lamp circuit assembly including a lamp holder, a battery cell, a metal spring connected between the lamp holder and the battery cell, a switch fastened to the ratchet unit by a screw joint, and a metal contact plate turned with the switch to close/open the circuit of the battery cell so as to turn on/off the lamp holder.

Abstract: A hydraulic puller for removing an element from an axle, including a hydraulic pipe, a pawl assembly mounted on the hydraulic pipe and controlled to catch the element to be removed from an axle, a movable rod movable fastened to the hydraulic pipe, and an oil tank assembly connected to the hydraulic pipe by a connecting pipe. The oil tank assembly comprising an air permeable oil container filled with a hydraulic oil and covered by a casing, and the casing having two air holes at two opposite locations. The hydraulic puller further having a hand lever, a piston rod moved by the hand lever to force the hydraulic oil out of the oil container late the hydraulic pipe to move the movable rod out of the hydraulic pipe, and spring means fastened to the hydraulic pipe to automatically move the movable rod back to its former position.

Abstract: An apparatus for generating a high power water stream performing an effective massage without producing undesired vibration and noise including an outer tub 1, an inner tub 2 arranged within the outer tub, passages 3 formed in a bottom wall of the outer tub, passages 2c formed in a side wall of the inner tub, a tubular members 4 provided at the passages 2c and having inner diameters which are gradually increased toward an inner space S3, a pump 5 arranged between a space S2 between side walls of outer and inner tubs and having jet nozzles 8 which are positioned at inlets of the jet nozzles, and a motor 7 coupled with the pump 5 by means of a drive shaft assembly 6. When the motor 7 is energized to drive the pump 5, water streams are projected at a very high speed from the jet nozzles into the tubular members 4. Then, the water in the space S2 is sucked into the inlets of the tubular members, and the water streams are projected from the outlets of the tubular members 4 at a very high speed.

Abstract: A peeling jig is provided for peeling a bonded wafer having voids formed in bonding surfaces so as to rebond, which does not injure the bonding surfaces or cause the adherence of particles thereto. The peeling jig includes a wedge portion 1a for inserting into the bonding surfaces, and a flat portion provided at the both sides of the base of the wedge portion. The apex angle of the wedge portion, when the chamfered angles at the bonding sides of the supporting substrate and active wafer of the bonded wafer to be separated are respectively .alpha. and .beta., is .theta. and .theta.>.alpha.+.beta.. When the wedge portion is inserted into the bonding surfaces, the right and left inclined surfaces of the wedge portion are in contact with the peripheries of the chamfered portions, and then chamfered portions are flared.

Abstract: A low-cost high-speed device for correcting the marking position of a laser marker, which uses a smaller quantity of corrective data and a simplified arithmetic operations, wherein corrective values for design parameters for a lens are obtained on the basis of a production tolerance of the lens. The design parameters of the lens are corrected according to the corrective values, and the distance for the lens to move is calculated from the corrected design parameters of the lens and the distance to a desired marking position. A move command corresponding to the calculated distance is outputted to lens drive means, and a pattern of a divided image is marked in the desired position.