Abstract: An articurator is comprised of a mandibular frame being provided with condyles, a maxillary frame mounted on the mandibular frame via condylar guide mechanisms, an anterior guide table provided on the front end of the mandibular frame, and an anterior guide pin provided on the front end of the maxillary frame. The anterior guide table comprises a table portion and lateral wings. The table portion has a sagittal inclination angle adjusting mechanism, and the lateral wings has lateral wing angles adjusting mechanisms. The anterior guide pin makes contact with and slides on an anterior guide mechanism formed by the surface of the anterior guide table. The condylar guide mechanisms in which the condyle is positioned have condylar path inclination angle adjusting mechanisms. The sagittal inclination angle, the lateral wing angles, and the condylar path inclination angles are to be adjusted by two steps to specified values of a first group and to specified values of a second group.

Abstract: A car plug connectable to an automobile cigarette lighter receptacle including a tip member having a tip terminal, a cylindrical member with the tip member screwed at one end, a base member attached to another end of the cylindrical member, a projection terminal having resilient contacts curved outwardly from the cylindrical member, an inner cylinder securely provided in the cylindrical member, a tubular fuse housed in the inner cylinder, a coil spring inserted between the tubular fuse and the tip terminal, and a metal terminal abutting against the base end of the tubular fuse and having a lead wire connecting portion. The car plug can fit in any size of cigarette lighter receptacles regardless of the diameter without coming off even under severe vibrations and in addition is easy to assemble.

Abstract: An apparatus for measuring the three-dimensional position and attitude of upper and lower clutches attached on patient's maxillary and mandibular teeth for computerized measurement of the mandibular movements necessary for the fabrication of dental prostheses is disclosed. The apparatus includes a part of a sphere that is fixed to the mandible and which is marked with a reference line and a part of another sphere of substantially the same radius as that of the above sphere, which is fixed to the maxilla and which is also marked with a reference line. The surfaces of the two spheres are caused to slide against each other, with their centers being in alignment, thereby achieving the measurement of the relative attitude of the two spheres.

Abstract: The electron beam exposure system according to this invention has a mask with a pattern cut therein that comprises a plurality of sub-patterns that make up an exposed pattern to be formed on the substrate, a first deflecting means for having electron beams sequentially select sub-patterns in the mask, and a second deflecting means that, in synchronism with said first deflecting means, combines the sub-patterns in said mask irradiated with said electron beams to thereby form a complete image of said exposed pattern on said substrate. The system of this invention further comprises a third deflecting means which uses electron beams having a cross section adequately smaller than each sub-pattern in the mask and which has such electron beams scan the selected sub-patterns in the mask, and a fourth deflecting means for arraying and exposing a plurality of complete images of said exposed pattern on said substrate.