Abstract: In a color cathode ray tube apparatus including an electron gun assembly having a main electron lens section for focusing and converging three electron beams arranged in a line on a phosphor screen, three electron beam through holes arranged in a line in the arrangement direction of the three electron beams are formed in each of the opposing surfaces of the first electrode having a relatively low potential and a second electrode having a relatively high potential, which electrodes constitute the main electron lens and substantially oppose, the pair of side beam through holes of the second electrode are decentered outward in the arrangement direction of the three electron beams with respect to the pair of side beam through holes of the first electrode, and each of the pair of side beam through holes of any one of the first and second electrodes is formed to have a substantially horizontally elongated shape in which both sides in the arrangement direction of the three electron beams are constituted by arcs and

Abstract: The present invention provides a coin spinner comprising a plate having a coin slit formed therein and in which a coin spinning mechanism consisting of a pair of leaf springs is encased. The plate is used with a savings box body having a coin receiver provided therein and also a transparent portion. Given a spinning force from the pair of leaf springs, a coin having been passed through the coin slit is spun on the coin receiver. The spinning coin is seen from outside the savings box body through the transparent portion.

Abstract: Disclosed is a color cathode ray tube equipped with a main electronic lens section for focusing a plurality of in-line electron beams on a screen section. The main electronic lens section includes a plurality of grids each having electron-beam through holes and securely supported by a plurality of insulating supports. At least one of the grids has a rectangular cup portion with a substantially rectangular cross section for commonly enclosing the plurality of in-line electron beams and a face having electron-beam through holes formed at least at one end and substantially perpendicular to the rectangular cup portion. The ratio of an outside diameter L.sub.H of the substantially rectangular portion in a long-axial direction to an outside length L.sub.S thereof in a short-axial direction, L.sub.H /L.sub.S, is set to 2.5<L.sub.H /L.sub.S <4.4, and the ratio of the outside length L.sub.S to a diameter D.sub.V of the electron-beam through holes in the same short-axial direction, L.sub.S /D.sub.V, is set to 1.

Abstract: The trick article giving an illusive cutting of a stick-like thing such as a cigarette or pencil and restoring its initial state, according to the present invention comprising an opaque disk-like rotary member disposed rotatably on a base, transparent auxiliary rotary members movable circumferentially as interlocked with the rotary member, and a housing which encases the rotary member and auxiliary rotary members. The rotary member and auxiliary rotary members have formed therein a main channel and sub channels, respectively, in which the stick-like thing is inserted from an insertion hole formed in the housing. The auxiliary rotary members have fixed therein deceptive stick-like things identical to the front and rear end portions, respectively, of the stick-like thing. When the rotary member is in its first angular position, end portions of the actual stick-like thing are visible through windows formed in the housing.

Abstract: In a color cathode ray tube apparatus including an electron gun assembly having a main electron lens section constituted by a plurality of electrodes for focusing three electron beams arranged in a line on a target and a deflection unit for deflecting the three electron beams, at least an electrode to which a voltage obtained by superposing a variable voltage changed in accordance with a deflection amount of the electron beams on a predetermined DC voltage and an electrode which substantially opposes the electrode and to which a voltage obtained by superposing a variable voltage induced through a capacitance between the opposing electrodes on a predetermined voltage applied through a resistor arranged in a tube is applied are arranged in a main electron lens section, and the main electron lens section is made into an electron lens for changing the focusing state of the electron beams in synchronism with deflection of the electron beams.

Abstract: In an electron gun for a cathode-ray tube according to this invention, a quadrupole lens having a small spherical aberration and an asymmetrical lens are combined to properly focus an electron beam, thereby greatly reducing the size of a beam spot formed on a target on a screen.

Abstract: In an electron gun assembly, electron beams emitted from cathodes are focused in first cross-over and accelerated and controlled by grids along three axes arranged in-line. The controlled electron beams are weakly converged by unipotential lenses and are converged in a vertical plane by a common single electron lens having a lens power which is varied in accordance with a horizontal or vertical deflection of the electron beams. The converged electron beams form second cross-over on the axes which are shifted along the axes are diverged from the second cross-overs. The diverged electron beams are further focused and converged onto a screen by a main lens.

Abstract: A color cathode ray tube apparatus is provided with an electron gun assembly which emits three electron beams and focuses and converges the electron beam onto a phosphor screen. In the gun assembly, the electron beams generated from cathodes are accelerated and controlled by first and second grids and pass through third, fourth and fifth grids. The third and fourth grids have single rectangular apertures common to the three electron beams, respectively, which are faced to each other and have different heights and widths. Each of the fourth and fifth grids have individual apertures which allow the corresponding electron beams to pass therethrough, respectively. The third and fifth grids is maintained at fixed potentials and a potential of the fourth grid is adjusted. Thus, individual focusing and convergence electron lenses are formed between the fourth and fifth grids.

Abstract: In a electron gun assembly, three in-line electron beams are generated from three cathodes and are controlled and accelerated by a prefocusing electron lens, and each of the electron beams is converged by unipotential electron lens. In a horizontal plane, the electron beams are collimated by a quadruple lenses and are incident on a single and common large-diameter main electron lens. In a vertical plane, each of the electron beams is emerged as a divergent electron beam from the quadruple lens and each of the divergent electron beams is incident on the main electron lens. Thus, each of the electron beams are correctly focused on a screen and the three electron beams are correctly converged on a convergent point by the main electrode lens.

Abstract: A color cathode ray tube apparatus is provided with an electron gun which has a common large-aperture electron lens on which three electron beams are incident. Since the electron gun has individual electron lenses for individual electron beams, the electron beams can be properly converged and focused on a screen. Thus, the apparatus enjoys a satisfactory picture characteristic.

Abstract: A visually pleasing box according to the present invention has six opaque panels. A light transmissible window is provided at one panel and a partition plate for dividing the interior of the box body into two half spaces is disposed on a flat face defined by one diagonal line of a given panel among the four panels abutting the panel formed with the window and other diagonal line of a panel opposite to the given panel and parallel to the diagonal line of the given panel. Furthermore, a light-reflective area is provided on a surface of the partition plate substantially over the entire surface thereof and facing the window. Thus, the reflecting operation of the reflective area is utilized to be visually pleased, and the box in which the state and the utility can be variably modified as a saving box, pencil stand box, flower stand box, stock box ornament box, etc. can be provided.

Abstract: A resistor is provided which comprises an insulation substrate, a resistive layer prepared from inorganic materials and printed on the insulation substrate, and an insulation layer prepared from borosilicate lead glass and overcoated on the resistive layer. The insulation layer contains an oxide of at least one transition metal selected from the group consisting of iron, nickel, chromium, cobalt, zinc, copper, zirconium, and cadmium. In the course of operation, the resistor of the present invention exhibits no changes in its resistance, irrespective of the length of time it may be operated.

Abstract: A penetration-through-wall magic set comprising a hollow tube opened at the opposite ends thereof and having formed therein a pair of slots opposite to each other with the tube bore between them, a gimmicked panel including a solid piece as wide as the length of the slots in the tube and having an opening smaller than the tube bore, and a solid pliable piece stuck at one end thereof to the solid piece and overlapping the latter, and an object capable of passing through the opening in the solid piece of the gimmicked panel. The solid pliable piece is extended at the free end thereof over the end of the solid piece so that when the solid piece and solid pliable piece are inserted across the tube from one to another of the slots therein, said over-extending end of the solid pliable piece abuts the inner wall of the tube around the slot so as to be freed from the solid piece.