Abstract: A color cathode ray tube including: a panel having a substantially flat outer surface and an inner surface having a curvature; a funnel coupled to the panel; a deflection yoke installed at an outer surface of the funnel; and a reinforcing band installed at a skirt portion of the panel, wherein the panel and the funnel satisfy the following condition, U/U??2.5, when a diagonal size of an effective surface of the panel is U, and a tube axis directional distance from an outer surface center of the panel to a boundary portion (TOR) between a body part and a yoke part of the funnel is U?, so that in the color cathode ray tube of the present invention, a lightness and slimness of a panel can be accomplished, and in order to compensate the weak structural strength caused in this case, a reinforcing band position (h) is set in the range of 10.5 mm˜20 mm to implement an optimum tensile force.

Abstract: An implosion preventing band for a cathode ray tube includes a main band formed around an outer surface of a skirt of a face panel, and including a pair of long sides provided on opposite sides of the skirt in a direction corresponding to long sides of a screen, a pair of short sides provided on opposite sides of the skirt in a direction corresponding to short sides of a screen, and corners formed between the long sides and the short sides to interconnect the same; and degaussing coil supports formed raised from the main band on long and short sides of the main band, and each having formed one or more openings that allow passage in a direction of a width of the main band, a degaussing coil(s) being supported using the openings. A plurality of the openings is formed continuously in the degaussing coil supports in a circumferential direction of the main band.

Abstract: A panel (2) of a vacuum envelope includes a substantially rectangular effective portion (8) having a substantially flat outer surface and also having a phosphor screen 1 formed on an inner surface, and a skirt portion (9) provided along a peripheral part of the effective portion and extended substantially perpendicularly to the effective portion. A funnel (3) is bonded to the skirt portion. A reinforcing band for fastening the skirt portion is attached round an outer surface of the skirt portion. When a distance in a direction of the tube axis from a bonding part between the panel and the funnel to an end of the reinforcing band on the outer surface side of the effective portion is represented by a and a distance in the direction of the tube axis from the bonding part to a central position of the outer surface of the effective portion is represented by h, the reinforcing band is arranged to satisfy a ?0.9h.

Abstract: A cathode ray tube comprises a panel of which outer surface is substantially flat and inner surface has a designated radius of curvature, a shadow mask coupled to the panel, the shadow mask having electron beam passing holes, and a reinforcing band mounted on the outer surface of the panel, wherein a diagonal size of an effective surface of the panel is in the range of 670-710 mm, and a thickness at a central portion of the panel is in the range of 10-12 mm.

Abstract: Implosion proof structure in a flat cathode ray tube having a panel to which the atmospheric pressure is exerted as the flat cathode ray tube is evacuated, including implosion proof means strapped or coated on an outer circumferential surface of a funnel in the vicinity of the panel, thereby enhancing an implosion proof strength of the flat cathode ray tube.

Abstract: Pad portions are respectively integrally protruded to be formed on an outer surface of a substantially funnel-shaped sidewall portion of the glass funnel for projection. A ridgeline for a reference end face formed on the pad portion comprises a first curved portion to form a top portion and second curved portions to form rising portions. The first curved portion and the second curved portions are smoothly continuous to each other without bending portions. The second curved portion is smoothly continuous to the outer face of the sidewall portion without bending portions.

Abstract: A degaussing coil is retained on the conical portion of a cathode ray tube by a resilient clip which snaps over a lug which is used to mount the cathode ray tube in its associated cabinet. The clip can be snapped over its respective mounting lug after the cathode ray tube has been mounted in its associated cabinet.

Abstract: The present invention is to provide a cathode-ray tube capable of improving an anti-explosion characteristic as compared with an arrangement of a prior-art cathode-ray tube and which can be reduced in weight while maintaining a satisfactory anti-explosion characteristic.

Abstract: A glass panel for an implosion-protected type cathode ray tube is provided with a compressive stress of 7 MPa-30 MPa in an outer surface of a face portion and a relation of Rb≧0.017D+4.0 between the radius of curvature Rb of an outer surface of a blend R portion 9 in a diagonal portion of the glass panel and the largest outer diameter D of the glass panel Further, when the face portion is substantially flat, there is a relation of Tr≦0.014D+11.0 wherein Tr is the largest wall thickness of the blend R portion.

Abstract: A cathode-ray tube includes an evacuated envelope having a faceplate panel with a sidewall joined to a funnel. Implosion protection band surrounds at least a portion of the sidewall and is in contact therewith. The band may include at a given location a pair of flair portions. A degaussing coil clip formed by a resilient or spring leaf material includes a pair of gripping tips that engage the band.

Abstract: A glass panel for a cathode ray tube having a substantially flat face portion and being safe and light in weight wherein the smallest value of the averaged radius of curvature of an outer face of the face portion is 25,000-50,000 mm and the outer face portion of the face portion has a compressive stress of 6-30 MPa in absolute value.

Abstract: A steel sheet for a heat-shrink band, which is to be thermally expanded and fitted over the outer periphery of the panel portion of a cathode ray tube, which has at least a 20% elongation at an ambient temperature and at least a 40 kg/mm.sup.2 stress of yielding point after the heating and cooling, in particular one comprised by a dual phase cold rolled steel sheet comprising a ferrite phase and a martensite phase or a cold rolled steel sheet containing a retained austenite.

Abstract: A heat-shrink band for a cathode ray tube (CRT) has a light weight, corrects the deformation of an object, such as a panel of a CRT due to the air pressure, effectively prevents implosion of the CRT, can suppress the color deviation, and in addition is excellent in formability. The method of fabricating the heat-shrink band includes a composition of cold rolled steel sheet such that the heat-shrink band offers both a high elongation characteristic at an ambient temperature and a high stress of yielding point characteristic after the heat-shrink process. The reduction of the weight of the heat-shrink band contributes to an overall reduction of the weight of the CRT.

Abstract: A glass bulb for a cathode ray tube in which a compressive stress is formed in a surface of a panel portion by physically strengthening; the maximum wall thickness t.sub.F of a face portion 7 on at least one axis of a long axis and a short axis of the face portion and the maximum wall thickness t.sub.R of a blend R portion satisfy 1.0.ltoreq.t.sub.R /t.sub.F .ltoreq.1.4; and the absolute value of a compressive stress value by physically strengthening in an area where a tensile vacuum stress is distributed after the assembling of the cathode ray tube is 7-30 MPa, whereby there is a small possibility of implosion of the glass bulb even when the wall thickness of the panel portion is made thin in comparison with a conventional glass bulb.

Abstract: A cathode ray tube having an improved safety feature in preparation for the accidental implosion of a high vacuum cathode ray tube is provided. The cathode ray tube comprises a panel, a funnel sealed with the panel, and an implosion preventing band mounted on a sealing portion of the panel and the funnel, further comprising a flexible auxiliary panel which externally covers the panel and whose skirt is adhered to the sealing portion by means of the implosion preventing band. Thus, an external impact is not directly transmitted to the CRT, and the danger due to the implosion of the front of the panel is reduced. Also, the effectiveness of the implosion preventing band can be improved.

Abstract: The invention relates to an implosion protection band 26, 126 for a CRT having a plurality of brackets 40, 70, 140 that are disposed between the band and a sidewall 3 of the CRT 1 and detachably attached to the implosion protection band to support either a degaussing coil 9 or to facilitate mounting the CRT within a receiver.

Abstract: An implosion-resistant band on a screen panel of a cathode-ray tube body has a metallic band element having a plurality of corners, and a plurality of holders mounted respectively on the corners. Each of the holders includes a flange held against and welded to one of the corners, an attachment arm bent from one edge of the flange, and a stack retainer extending from an opposite edge of the flange and offset out of contact with the metallic band element. The retainer has a central recess opening away from the attachment arm.

Abstract: An assembly of at least two stacked anti-implosion bands, in which each anti-implosion band 14, 24 comprises suspension elements 15, 25 projecting from the anti-implosion band 14, 24 which surround the adjacent anti-implosion band with clearance. As a result, anti-implosion bands can be stacked in a simple manner for storage and/or shipment, and can be readily unstacked for individual attachment to display tubes.