Abstract: An articulated industrial robot comprising a supporting post mounted on a base; a forearm provided at its end with a wrist having at least one degree of freedom; a pair of upper arms pivotally connected at their one ends to the supporting post and at their other ends to the forearm, the upper arms being disposed in parallel with each other at both sides of the supporting post and the forearm; an upper arm rotary driving source mounted in the supporting post; an upper arm connecting mechanism for connecting the output of the upper arm rotary driving source to the upper arm through a reduction gear; a forearm rotary driving source mounted on one of the upper arms; a forearm connecting mechanism for connecting the output of the forearm rotary driving source to the forearm through a reduction gear; a wrist posture controlling rotary driving source provided on the other upper arm or on the supporting post; and a wrist posture controlling connecting mechanism for connecting the output of the wrist posture controlli

Abstract: A hot-melt adhesive comprising a self-curing unsaturated polyester resin having an air-drying functional group and an average polymerization degree of 8 or more has been found to have an excellent heat resistance and a high bonding strength when it is bonding-cured under heat and pressure. If an additive selected from a polymerization initiator, a polymerization promotor and a photosensitizer is incorporated into the present air-drying, self-curing polyester resin, the curing speed is extremely increased to such an extent as cannot be expected from the conventional curing type adhesives. The incorporation of such an additive into the self-curing unsaturated polyester resin is advantageously realized in the form of composite structures of various forms, e.g., a laminate form, a core-in-sheath form and an islands-in-sea form. Such a composite hot-melt adhesive structure is useful for improving a pot life.

Abstract: An apparatus is disclosed for cooling the skid pipes of a continuous slab reheating furnace by the circulation of pressurized hot water, not cold water or steam, through the skid pipes where the hot water is heated to even higher temperatures. The heated hot water is relatively cooled by passage through a heat exchanger, after which the relatively cooler hot water is recirculated to the skid pipes. Means are provided for keeping the hot water under a pressure sufficient to maintain the hot water in a liquid state and prevent its evaporation into steam, as the hot water circulates through the apparatus, especially the skid pipes of the furnace.

Abstract: An industrial robot of the articulated type including a swivelling pedestal capable of swivelling about a vertical axis by force of a drive motor, a first brachium supported for pivotal movement about a first axis disposed horizontally on the pedestal, a lever supported for pivotal movement about the first axis, a second brachium connected at one end to a pivoting end of the lever for pivotal movement, a forearm connected to the other end of the second brachium and a pivoting end of the first brachium for pivotal movement and cooperating with the first and second brachiums and the lever to constitute a quadric parallel motion mechanism, and a wrist mounted on one end of the forearm.

Abstract: A polyolefin resin composition obtained by mixing a polyolefin resin with minor proportion of a polybutene of low molecular weight, a mixed glyceride containing a lower acyl group and a higher acyl group, and preferably a surface wetting agent, is used to form a polyolefin film, which is thereafter aged. The thus formed film exhibits very excellent adhesion strength as well as very good transparency and physical strength, and is therefore suitable for use as a food packaging film.

Abstract: A novel polyester type powder coating composition which includes a specific self-hardening polyester of air-hardening type comprising as main ester-constituting monomer units, (1) at least one polycarboxylic acid component containing at least 10 mole %, based on the polycarboxylic acid component, of at least one aromatic polycarboxylic acid component (A) and (2) at least one polyhydric alcohol component, having in its main chain at least one terminal blocked with a monofunctional unsaturated alicyclic compound component (B) and having a softening point of 30.degree. to 150.degree. C. This composition is excellent in storage stability and adaptability to either thin coating or thick coating, and when it is applied onto an article to be coated and baked at a temperature of 170.degree. to 230.degree. C. for 5 to 30 minutes, a coating excellent in appearance, mechanical strength, gloss and reflection sharpness can be formed advantageously without generating undesired gases at the baking.

Abstract: An alignment apparatus, in which a mask is overlaid on a wafer and a relative displacement between the wafer and a target pattern formed on the mask is detected to effect alignment thereof, comprises a slit frame adapted to reciprocate in a direction substantially parallel to the top surface of the mask and having a slit formed therein, an illumination optical system for illuminating the target pattern, an image formation optical system for forming the image of the target pattern onto the slit of the slit frame, a light sensing element mounted on the slit frame for detecting the target pattern image formed by the image formation optical system through the slit to convert the image into an electric signal, and a displacement detector for detecting the amount of movement of the reciprocation of the slit frame to convert the amount of movement into a position signal which the light sensing element scans, whereby the output signals from the displacement detector and the light sensing element are used to detect th

Abstract: A tacky polyolefin film is prepared by forming a film using a composition comprising a polyolefin resin, a low grade polyolefin and a tackifier and aging the resulting film.

Abstract: A thermosetting powder coating composition having good handling characteristics and capable of being baked under relatively mild conditions and providing a coating having practically satisfactory properties. This coating composition is prepared by incorporating in 100 parts by weight of an epoxy group-containing acrylic or methacrylic copolymer having a glass transition point of 30.degree. to 90.degree. C. and a weight average molecular weight of 2,500 to 30,000, said copolymer consisting of 3 to 35% by weight of acrylate or methacrylate monomer units and 97 to 65% by weight of ethylenically unsaturated monomer units, 3 to 40 parts by weight of a specific diphenol having at its both terminals hydroxybenzoic acid ester structures as represented by the general formula: ##STR1## wherein R.sub.

Abstract: An acrylic powder resin coating composition having good handling characteristics and capable of providing a coating having a well-balanced combination of the reflection sharpness and other physical properties is provided. This coating composition is prepared by incorporating in an acrylic copolymer resin a compound containing in the molecule one phenolic hydroxyl group and one carboxyl group and further containing at least one ester linkage between the benzene nucleus to which the phenolic hydroxyl group is bonded and the carboxyl group, said compound having a melting point of 45.degree. to 160.degree.C. and a number average molecular weight of up to 10,000. Especially good results are obtained when a polyester resin having a melting point of 40.degree. to 160.degree.C. and a number average molecular weight of 1,000 to 10,000 is further incorporated in this powder coating composition.

Abstract: A positioning apparatus comprising marks for position detection which are respectively formed on a plurality of objects, means to cause optical images of the position detecting marks from the respective objects to reach a scanning mechanism, the scanning mechanism scanning the optical images at the same time, a plurality of detectors, each of which consists of a slit and a photoelectric element, the slits being arranged on an identical optical axis so that the optical images of the position detecting marks of the respective objects as scanned by the scanning mechanism may be detected respectively and individually, and a driving device which moves one of the plurality of objects on the basis of signals from the detectors, to effect the relative positioning of the plurality of objects.

Abstract: The present invention discloses a scanning photoelectric microscope in which a first reference object to be measured which is mounted on a stationary support is disposed relative to a second object to be measured which is disposed on a slidable table so as to form on both sides of the first object to be measured two indication intervals, which are caused to coincide with each other for alignment.