Abstract: A three dimensional surface shaping tool comprising a machining portion, wherein a graphical projection of the outermost locus of the motion of the machining portion, onto a plane parallel to the longitudinal axis of the tool, has a shape comprising a curve expressed by at least one equation or a combination of at least one straight line and at least one of the curve, and a three dimensional surface shaping method using the above mentioned tool, which comprises the steps of determining the desired shape of the surface; choosing a shape of the tool based on the desired shape of the surface; and contacting the tool with a workpiece under tool motion control such that the contact with the tool occurs at points along the machining portion of the tool where a curvature thereof is most appropriate for the desired surface shape.

Abstract: A driving power transmission device having a clutch provided between a first shaft and a second shaft relatively rotatable to each other for transmitting a driving power is provided, wherein a housing to which the first shaft is connected and a piston provided in the housing for actuating the clutch define a cylindrical space in order to receive a plurality of blades rotatable with the second shaft. High viscous fluid is filled within the cylindrical space defined by the housing and the piston. Each of the blades has a convexly curved side surface and a concavely curved side surface located at opposite sides in rotational direction. When the first shaft rotates faster than the second shaft, the convexly curved side surfaces of the blades compulsorily displaces the high viscous fluid within the space in order to generate a pressure actuating the clutch through the piston. In this forward torque transmission, the tranmissive torque becomes relatively large.

Abstract: A data processing device for machining a three dimensional surface includes a tool locus data generator providing tool shape and dimension indicative information of a machining tool and machining route information, calculating information selected from a curvature, a normal line and a tangential line at a machining point of the three dimensional surface, and calculating the optimum shape of a machining tool and/or controlling condition of the tool based on the calculated information; a device for checking the tool locus data of a machining tool based on a predetermined pattern; and a processor for converting the checked tool locus data into data which is to be inputted into a machine which conducts three dimensional surface machining.

Abstract: A continuous composite coating apparatus for coating a continuous strip has a pair of strip supply/take-up devices and at least two of a plasma chemical vapor deposition coating zone, an ion-plating coating zone and a sputtering coating zone which are arranged in series along the path of said strip between the strip supply/take-up devices. The adjacent coating zones are separated from each other by a partition wall having a slit which is sized to allow the strip to pass therethrough and guide rollers are provided adjacent to the upper edge of the strip so as to tense the strip such that the path of the strip is slightly convex downwards thereby to keep the strip away from the upper and lower edges of the slit. The coating zones are arranged to effect coating only on the underside of the strip which is not contacted by the guide rollers, whereby a coating layer having excellent properties without any defect can be formed on the underside of the strip.

Abstract: A composite heat-insulating material having the structure that an olefin- or styrene-based resin and a urethane foam are laminated with an adhesive, said adhesive comprising(A) 20 to 100% by weight of a water-soluble or water-dispersible carboxyl group-containing polyolefin-based polymer;(B) 0 to 80% by weight of a water-soluble polymer having an antistatic property; and(C) 0 to 2% by weight of a fluorine-based surface active agent.

Abstract: In assembling a rotor into a small electric rotary machine, a spacer made of resinous material is provided to have an ideal axial play for the rotor. When the rotor is assembled into a housing, the resinous spacer is made to be soft enough to allow encroachment of the rotor shaft end until the rotor is placed in the right place. Thereafter, the spacer is made hard enough to support the axial movement of the rotor when the motor operates. Since the resinous spacer shrinks after hardening it provides an ideal axial play for the rotor.

Abstract: An apparatus for measuring contour configuration of articles, particularly brittle articles such as ceramic honeycombs without touching them comprising a turn table on which the article to be measured is placed, a rotary encoder mechanically coupled to the turn table for producing a rotational angle signal representing a rotational position of the article on the turn table, an edge detector including a parallel light projecting member and a parallel light receiving member, those members being arranged on respective sides of the turn table in such a manner that a part of the parallel light is shielded or cut by the article and an edge position signal is produced, a memory for storing a standard edge position signal which will be produced by the edge detector when a standard article having given dimensions placed on the turn table is scanned during a single rotation thereof, and an operation circuit for receiving the rotational angle signal from the rotary encoder, the edge position signal from the edge detecto

Abstract: An apparatus for measuring contour configuration of articles, particularly brittle articles such as ceramic honeycombs without touching them comprising a turn table on which the article to be measured is placed, a rotary encoder mechanically coupled to the turn table for producing a rotational angle signal representing a rotational position of the article on the turn table, a lamp for illuminating the article on the table, particularly a portion of article to be measured such as an upper edge or side edge, a pick-up device including a lens for forming an optical image of said portion of article and an image detector such as a linear array of image sensor for converting the optical image into a picture signal, a memory for storing a standard picture signal which will be produced by the image detector when a standard article having given dimensions placed on the turn table is scanned during a single rotation thereof, and an operation circuit for receiving the rotational angle signal from the rotary encoder, the

Abstract: Maintenance apparatuses for and improvements in a radioactive matter containing waste gas treating installation, which is capable of completely carrying out waste gas cleaning by means of ceramic filter element is disclosed. The installation is provided with at least one of the following three apparatuses or devices, i.e.

Abstract: A wiper device in which the driving force is transmitted to wiper arms through link structures so that wiper blades are reciprocated in a synchronized manner. The link in one link structure has pin means for receiving the driving force from driving means through a crank arm and another pin means which is different from the first-mentioned pin means and transmits the driving force to the link in the other link structure.