Abstract: The buckle of the present invention is a buckle, of which engagement claw can be engaged with a serrate engagement groove of a band. The buckle includes: a buckle main body composed of a base plate and a roof frame, and two side plates connecting the base plate and the roof frame; and an operation piece being installed inside the roof frame, and having the engagement claw that can be engaged with the engagement groove of the band. The operation piece is movably supported by a connecting shaft connecting the two side plates in an intermediate point. The buckle main body is provided with a control piece for controlling a swing of the operation piece. The engagement claw is engaged with the engagement groove of the band, and the control piece functions as a spring for biasing the engagement claw toward the engagement groove side in such a locked state.

Abstract: Provided is a baseball cap-type headwear in which a peak is provided in a front lower end of a head circumferential portion and a crown is connected to an upper end of the head circumferential portion, in which a front portion of the head circumferential portion is formed as an inclined surface that widens in an outward direction of the headwear as the inclined surface advances toward a lower end, a void is formed between the peak and the head circumferential portion, and the central portion of one end of the peak is positioned on an inner side of the headwear more than the front lower end of the head circumferential portion, and at least the front portion of the head circumferential portion and the peak are integrally molded from a synthetic resin.

Abstract: A slide adjuster includes: an operating piece having an engagement pawl on one end thereof is provided to the inner side of a main body of a buckle, the engagement pawl of the buckle being capable of engaging with saw-toothed engagement grooves formed along an edge of a band; the operating piece is made pivotable by being supported by a connection shaft at the midpoint thereof; when the band is passed through the insertion space of the buckle, the band moves forward while the edge of the band contacts the engagement pawl of the operating piece and presses said one end of the operating piece upward; and the operating piece returns to the initial state thereof in reaction to contacting a control piece.

Abstract: A slide adjuster includes: an operating piece having an engagement pawl on one end thereof is provided to the inner side of a main body of a buckle, the engagement pawl of the buckle being capable of engaging with saw-toothed engagement grooves formed along an edge of a band; the operating piece is made pivotable by being supported by a connection shaft at the midpoint thereof; when the band is passed through the insertion space of the buckle, the band moves forward while the edge of the band contacts the engagement pawl of the operating piece and presses said one end of the operating piece upward; and the operating piece returns to the initial state thereof in reaction to contacting a control piece.

Abstract: The buckle of the present invention is a buckle, of which engagement claw can be engaged with a serrate engagement groove of a band. The buckle includes: a buckle main body composed of a base plate and a roof frame, and two side plates connecting the base plate and the roof frame; and an operation piece being installed inside the roof frame, and having the engagement claw that can be engaged with the engagement groove of the band. The operation piece is movably supported by a connecting shaft connecting the two side plates in an intermediate point. The buckle main body is provided with a control piece for controlling a swing of the operation piece. The engagement claw is engaged with the engagement groove of the band, and the control piece functions as a spring for biasing the engagement claw toward the engagement groove side in such a locked state.

Abstract: Provided is a baseball cap-type headwear in which a peak is provided in a front lower end of a head circumferential portion and a crown is connected to an upper end of the head circumferential portion, in which a front portion of the head circumferential portion is formed as an inclined surface that widens in an outward direction of the headwear as the inclined surface advances toward a lower end, a void is formed between the peak and the head circumferential portion, and the central portion of one end of the peak is positioned on an inner side of the headwear more than the front lower end of the head circumferential portion, and at least the front portion of the head circumferential portion and the peak are integrally molded from a synthetic resin.

Abstract: There is provided a bottom periphery length adjustment mechanism usable for apparel in which a very high importance is attached to design of appearance. The length adjustment mechanism comprises a slide adjuster. The slide adjuster comprises a band and a buckle that are formed of a synthetic resin. An engagement claw of the buckle is engaged with a serrated engagement groove provided on the outer surface of the band so that, in an engaged state, the band freely approaches the buckle but cannot retract. The buckle is fixed to the backside of the bottom. When the band approaches the buckle, the periphery of the bottom shrinks while, when the band moves away from the buckle, the periphery of the bottom expands.

Abstract: There is provided a bottom periphery length adjustment mechanism usable for apparel in which a very high importance is attached to design of appearance. The length adjustment mechanism comprises a slide adjuster. The slide adjuster comprises a band and a buckle that are formed of a synthetic resin. An engagement claw of the buckle is engaged with a serrated engagement groove provided on the outer surface of the band so that, in an engaged state, the band freely approaches the buckle but cannot retract. The buckle is fixed to the backside of the bottom. When the band approaches the buckle, the periphery of the bottom shrinks while, when the band moves away from the buckle, the periphery of the bottom expands.

Abstract: A slide adjuster includes a belt having engagement grooves in a form of saw teeth, and a buckle for receiving the belt therein in a forward direction and preventing the belt in the buckle from moving in a backward direction. The buckle includes a buckle body, and an operating plate disposed above a bottom plate and including an engagement claw projecting toward the bottom plate to engage one of the engagement grooves of the belt. The buckle body further includes restricting members projecting inwardly from two side plates thereof, and the operating plate includes recessed portions for receiving the restricting members therein without connecting thereto to prevent an accidental pressing force from being applied in a vertical direction to the operating plate.

Abstract: A safety hat has overwhelming light weight and marvelous air permeability as well as measures for water protection against rainy weather and the like. A front air hole 13 is provided in a visor portion 12 in front of a hat body 10 in a horizontal direction, the visor portion 12 is defined by a streamlined curvature so that an ambient air can be brought in smoothly, and an eave portion 15 of the hat body 10 covers a top end 12a of the visor portion 12 from the outside without contacting the same to form the front air hole 13. An air hole 17 is also provided at a back of a peak portion of the hat body 10. The front air hole 13 mainly functions as an inlet for the ambient air, and the rear air hole 17 functions as an outlet for the air introduced into and staying inside the hat body 10.

Abstract: A synthetic-resin made and single-peace structured slide adjuster in which a buckle section has an appearance not so visible. In the slide adjuster for a belt and a buckle, an engagement claw of the buckle is engaged in an engagement groove having a form like saw teeth formed on an external surface of the belt. In the engaged state the belt can move forward but can not move backward. The buckle comprises a buckle body having a bottom plate and a ceiling frame opposite to each other and two side plates for connection between the bottom plate and the ceiling frame and also having an internal space for insertion of the belt; and an operating plate provided in the horizontal posture inside the ceiling frame and having an engagement claw provided on a bottom surface of an end portion thereof and capable of being engaged in the engagement groove of the belt and also having a pressed section provided at another end portion thereof for releasing the engagement.

Abstract: A safety hat has overwhelming light weight and marvelous air permeability as well as measures for water protection against rainy weather and the like. A front air hole 13 is provided in a visor portion 12 in front of a hat body 10 in a horizontal direction, the visor portion 12 is defined by a streamlined curvature so that an ambient air can be brought in smoothly, and an eave portion 15 of the hat body 10 covers a top end 12a of the visor portion 12 from the outside without contacting the same to form the front air hole 13. An air hole 17 is also provided at a back of a peak portion of the hat body 10. The front air hole 13 mainly functions as an inlet for the ambient air, and the rear air hole 17 functions as an outlet for the air introduced into and staying inside the hat body 10.

Abstract: A color cathode ray tube has an electron gun including three in-line cathodes, first and second grid electrodes arranged in the order named, and plural electrodes for focusing three electron beams from the cathodes onto the phosphor screen. The following inequalities are satisfied: E≦1.4A−0.2B−2.7C−2D, and A≦0.35 mm, where A (mm) is a diameter of an electron-beam transmissive aperture in the first grid electrode, B (mm) is a diameter of an electron-beam transmissive aperture in the second grid electrode, C (mm) is a thickness of a portion of the first grid electrode immediately surrounding the electron-beam transmissive aperture in the first grid electrode, D (mm) is a spacing between the cathodes and the electron-beam transmissive aperture in the first grid electrode, and E (mm) is a spacing between the first grid electrode and the second grid electrode.

Abstract: A color cathode ray tube has an electron gun including three in-line cathodes, first and second grid electrodes arranged in the order named, and plural electrodes for focusing three electron beams from the cathodes onto the phosphor screen. The following inequalities are satisfied: E≦1.4A−0.2B−2.7C−2D, and A≦0.35 mm, where A (mm) is a diameter of an electron-beam transmissive aperture in the first grid electrode, B (mm) is a diameter of an electron-beam transmissive aperture in the second grid electrode, C (mm) is a thickness of a portion of the first grid electrode immediately surrounding the electron-beam transmissive aperture in the first grid electrode, D (mm) is a spacing between the cathodes and the electron-beam transmissive aperture in the first grid electrode, and E (mm) is a spacing between the first grid electrode and the second grid electrode.

Abstract: A band has an engaging projection part at one end, and an engaging grooves at the other end to adjust the connection in an annular shape. The band is movable forward but not movable backward relative to the other under the condition that the engaging projection part is locked to the engaging recessed part. A pair of hook parts capable of pulling both end parts by fingers of one hand is installed on both end parts. A buckle connected to the band includes a buckle main body having a bottom plate, a roof frame, and side plates for connecting the bottom plate to the roof frame. An operating plate is installed horizontally inside the roof frame, and has an engaging claw engageable with the band engaging grooves and a pressing part. The buckle and the band is made simple, and easily attached together.

Abstract: A color cathode ray tube equipped with an in-line electron gun comprising three cathodes for emitting three electron beams of an in-line arrangement toward a fluorescent screen, and a main lens for focusing the aid three electron beams on the fluorescent screen. The main lens includes a first main lens electrode and a second main lens electrode arranged in a spaced relationship in a direction of an axis of the tube and having different voltages applied thereto. Each of the first and second main lens electrodes have a single opening common to the three electron beams at opposing ends thereof, and at least one of the first main lens electrode and the second main lens electrode have therein three apertures for electron beam passage which are set back from the opposing ends, wherein T and S have values in the region where the following inequalities are satisfied, 2 S +14.6≦T ≦28.1, and 4.

Abstract: An intermediate electrode at a middle voltage which takes a value between a focusing voltage and an anode voltage is disposed between a focusing electrode and an anode of an in-line type electron gun. The intermediate electrode has a single opening whose diameter in the horizontal direction (in-line direction) is greater than the diameter thereof in the direction perpendicular to the horizontal direction so as to allow three electron beams to pass therethrough. The intermediate electrode also has a plate electrode provided therein with three electron beam apertures which respectively allow three electron beams to pass therethrough. Inside of the focusing electrode, a plate electrode provided with three electron beam apertures is provided.

Abstract: A focus electrode is constituted by a first type of focus electrode group to which a first focus voltage is applied, and a second type of focus electrode group to which a second focus voltage is applied. Between the first type of focus electrode group and the second type of focus electrode group are formed a lens at least having a lens action for correcting the field curvature and an electrostatic quadrupole lens. The center axes of the outer electron beam passage holes in the first type of focus electrode forming the lens at least having a lens action for correcting the field curvature are deviated on a horizontal plane from the center axes of the outer electron beam passage holes in the second type of focus electrode. The electrostatic quadrupole lens produces dissimilar intensities for the outer electron beams and for the center electron beam.