Abstract: Polytetrafluoroethylene molding powder which comprises 0.01 to 1% by weight of a perfluoro(vinyl ether) unit and which has a heat of crystallization of 18.0 to 25.0 J/g. The molding powder provides a molded article which has a flex life of not less than 7 million cycles, a creep resistance (total deformation at 200.degree. C.) of not more than 20%, and a creep resistance (total deformation at 25.degree. C.) of not more than 15%. The polytetrafluoroethylene molding powder which is excellent in both creep resistance and flex fatigue resistance is provided as a molding material for parts which are repeatedly bent such as pump.

Abstract: Non-fried instant noodles are manufactured by kneading wheat flour together with water or water containing additives to form a dough, rolling the dough by a rolling device to form a dough sheet, passing the dough sheet between molding rolls having a plurality of pyramid-shaped protrusions formed thereon to form pyramid-shaped recesses in rolled surfaces of the dough sheet, cutting the dough sheet into a plurality of strips such that each of the strips has formed therein at least one row of pyramid-shaped recesses aligned in a longitudinal direction of the strip, boiling the instant noodle strips with steam, and drying the boiled noodle strips with hot air. The thus obtained oil-free instant noodles have superior reconstituting property and transparent appearance, and can give smooth and soft chewiness. Further, the instant noodles are well matched with soup.

Abstract: A device for checking lateral views at front/rear ends of a vehicle comprises an image pickup unit having a light path altering assembly and an image sensor and disposed at a front or rear end of a vehicle, for taking into the image sensor image information of areas on the right and left of the vehicle by way of the light path altering assembly and image information of an area ahead of the image sensor through a gap formed along an extension of an axial line of the image sensor; and a display unit provided in a room of the vehicle, for displaying the image information taken into the image sensor.

Abstract: The present invention provides a process for making a semiconductor wafer, including slicing an ingot to obtain wafers; surface-grinding both sides of each of the wafers; etching the wafers with an alkaline solution; chamfering the peripheral portion of each of the wafers; both-side polishing the wafers for mirror processing ; cleaning both sides of each of the wafers to remove the particles attached to the sides; and drying and cleaning the wafers. By employing the present process, the time for polishing the wafer can be shortened, and the semiconductor wafer can be made effectively.

Abstract: A folding collapsible step exerciser including a base frame, a front upright pivoted to a front side of the base frame and locked in a vertical position by a lock screw, a driving wheel revolvably supported on the base frame and having a double crank type wheel shaft, a damping wheel turned with the driving wheel, a friction belt mounted on the base frame and adapted to impart a friction resistance to the damping wheel, two handlebars bilaterally pivoted to the front upright, and two pedals having a respective front end respectively pivoted to the bottom ends of the handlebars and a respective rear end respectively pivoted to the two ends of the double crank type wheel shaft of the driving wheel.

Abstract: An electric cooker which includes a cooker unit controlled to heat an electric heating coil therein and defining a top chamber above the electric heating coil and a bottom chamber below the electric heating coil, a cooking container mounted in the top chamber of the cooker unit, a sliding steam tray assembly mounted in the bottom chamber of the cooker unit, and a cover hinged to the cooker unit and covered on the top chamber and having a pressure regulator controlled to let excessive pressure be exhausted out of the cover or to guide steam from the top chamber to the bottom chamber to steam food in the steam tray assembly.

Abstract: A first object is to stabilize output of laser light. In order to achieve the first object, if it is detected by an output detection means (15) that the output (E) of laser light (La) has departed from a target value, whilst maintaining the voltage of a power source (17) at a fixed value or in a fixed range, the amount of laser gas supplied to a laser chamber (4) is controlled such that the output (E) of laser light becomes the target value. A second object is to reduce the wear of the pre-ionization electrodes and to prevent drop in output of laser light. The second object is achieved as follows. Specifically, the pulse current discharged from primary capacitor (C1) is stepped up in voltage by a pulse transformer and is charged onto a secondary capacitor (C2).

Abstract: A thermoplastic resin composition comprising a blend obtainable by blending 0.1 to 99% by weight of (a) a fluorine-containing polymer having a number-average molecular weight of 2000 to 1000000 and having hydroxy group or epoxy group at least at one of end portions of a main chain and side chain of the polymer, and 1 to 99.9% by weight of (b) a heat resisting thermoplastic resin having a crystalline melting point or glass transition temperature of not less than 150.degree. C. The present invention can provide a composition comprising various heat resisting thermoplastic resins and a fluorine-containing polymer having a functional group which is capable of developing an affinity with said resins and forming a uniform dispersion.

Abstract: An electric shielding metal shell having two symmetrical rectangular-shaped metal casings connected together to hold a receptacle and an electric wire covered within a braided earthed tubes. The metal casings each having a respective binding strip that are connected to each other to hold the braided earthed tube and the electric wire. The binding strip of each metal casing respectively extends from a respective curved suspension strip, which suspends from a bottom wall of the respective metal casing, so that the binding strips of the metal casings can be moved relative to the metal casings, for permitting the electric wire to be bent smoothly to the desired angle.

Abstract: A folding collapsbile step exerciser including a base frame, a front upright pivoted to a front side of the base frame and locked in a vertical position by lock means, a driving wheel having a fixed wheel shaft revolvably supported on the base frame, a damping wheel turned with the driving wheel, a damping device adapted to impart a damping resistance to the damping wheel, two pedals, two rear pedal links respectively coupled between rear ends of the pedals and two opposite ends of the fixed wheel shaft of the driving wheel, two front pedal links having a respective bottom end pivoted to a front end of one pedal and a respective top end coupled to the front upright by a slip joint and a respective middle part fixedly mounted with a pivot, and two handlebars respectively turned about the pivots of the front pedal links and a having a respective bottom end pivoted to the base frame.

Abstract: A storage case mounting structure including an upright back frame raised from a rear side of a seat of a baby cart, and a storage case fixedly fastened to the upright back frame to serve as a seat back, the storage case including a case body adapted for holding things and having a retaining hole on the inside, a cover hinged to the case body and having a springy retainer rod adapted to be forced into engagement with the retaining hole of the case body to secure the cover in the closed position, and a hollow, bottom-open coupling block integrally formed at the front side of the case body and sleeved onto the upright back frame of the baby cart and fixedly secured thereto by fastening means, the coupling block having a smoothly curved front side adapted to support the back of the child who rides the baby cart.

Abstract: A fitness equipment including a base, an oblique support equipped with bottom wheels and pivoted to the base to hold a bench with a seat cushion and a headrest for supporting the user, two handlebars coupled to the oblique support, two actuating rods respectively pivoted to the handlebars, a bracing collapsibly connected between the base and the oblique support, two collapsible pedals pivoted to the base and the oblique support, upper links and intermediate links and bottom links respectively pivotably connected between the oblique support and the actuating rods, a damping mechanism connected between the oblique support, upper and intermediate links, wherein when the user sits on the seat cushion with the back supported on the bench and the hands holding on the handlebars and the legs pedaling the pedals, the bottom links and the intermediate links and the upper links are alternatively driven to move the actuating rods and the connecting frames, enabling the user to simulate the action of swimming.

Abstract: An evaluation method of a silicon wafer by correctly calculating the Fe--B concentration is disclosed. Even when the SPV method is utilized, the over-estimated Fe--B concentration in silicon wafers containing oxygen-precipitation defects can be avoided. Diffusion lengths Lb and La of minority carriers in a P-type silicon wafer before and after an activation step are measured by the SPV method. A value of (Lb--La)/Lb calculated from La and Lb is compared with a constant C which is read from the plot of Lb vs. (Lb--La). If (Lb--La)/Lb is smaller than constant C, the concentration calculation is terminated since there are oxygen-precipitation defects in the silicon wafer. The calculation is carried out for silicon wafers containing no oxygen-precipitation defects, and is based on the formula of Fe--B concentration (cm.sup.-3).apprxeq.1.times.10.sup.16 (La.sup.-2 --Lb.sup.-2).

Abstract: An improved securing structure for air valves including a nut being a tapered hexagonal rod structure for use with suitable wrenches. The nut has a projecting configuration to prevent the problem with the prior art in which the nut cannot be properly tightened or loosened when the nut is positioned too near the rim of the tire.

Abstract: A jogger exerciser including a first support frame and a second support frame pivoted together, two struts connected between the support frames, two knuckle members respectively and fixedly mounted on two top ends of the first support frame, two swing members respectively turned about the knuckle members and having a respective hand grip at the top and a respective foot plate at the bottom, and a transverse top frame connected between the knuckle members, wherein a pairs of pivoted links are respectively coupled between two opposite ends of a pivot in the transverse top frame and the two swinging members to guide the swinging of the swing members and to limit their swinging angle.