Asahi Glass Company, Limited

Mitsubishi Jukogyo Kabushiki Kaisha

Other

Naoya Shimizu

Hiroshi Yamasaki

Tsunehiko Sugawara

Yoshihiro Tsuchimoto

Toshikazu Ikezawa

Toshihide Murakami

Toshio Sanagawa

Naoki Morihiro

Haretaro Hidaka

Tadayoshi Ooshima

A glass panel for a cathode ray tube including a substantially rectangular face portion and a skirt portion. Further constituting a side wall of the face portion, a compressive stress layer having a thickness of at least {fraction (1/10)} of the thickness of the face portion, is formed on each of the inner and outer surfaces of a useful screen area of the face portion, so as to satisfy 0.4&lE;&sgr; /&sgr; &lE;1.0, where &sgr; is the compressive stress on the inner surface at the center of the useful screen area, and &sgr; is the compressive stress on the inner surface in the vicinity of ends of diagonal axial lines of the useful screen area.

Glass panel for a cathode ray tube

When a face portion of a panel portion has a central wall thickness of T , an end of a useful screen area has a wall thickness of T , a sealing end surface of a skirt portion has is a width of T , and an intermediate part of a body portion of a funnel portion is T , there are established the formulas of; T /T &gE;1.70, T /T &equals;0.43&minus;0.50, and T /T &equals;0.37&minus;0.49, and a strengthened compressive stress of 5-14 MPa is applied to a side of the skirt portion.

Glass bulb for a cathode ray tube and cathode ray tube

A glass panel for a cathode ray tube including a substantially rectangular face portion and a skirt portion. Further constituting a side wall of the face portion, a compressive stress layer having a thickness of at least 1/10 of the thickness of the face portion, is formed on each of the inner and outer surfaces of a useful screen area of the face portion, so as to satisfy 0.4.ltoreq..sigma..sub.di /.sigma..sub.ci .ltoreq.1.0, where .sigma..sub.ci is the compressive stress on the inner surface at the center of the useful screen area, and .sigma..sub.di is the compressive stress on the inner surface in the vicinity of ends of diagonal axial lines of the useful screen area.

Air is blowed before an annealing step to corner portions in an inner face portion of a glass panel which has been press-formed in a mold to cool that portions to be stronger than the other portion whereby a temperature difference between the corner portions and the other portion is reduced.

Method for producing a glass panel for a cathode ray tube

An apparatus for inspecting the inner surface (8a) of a hole includes a rotor shaft (12) supported rotatably (14, 16) around its lengthwise axis and movably along the axis and a sensor assembly (7) which is linked by a tilting mechanism (1) with the rotor shaft so that it can be inclined with respect to the axis of the rotor shaft and rotates and moves as the rotor shaft rotates and moves. The sensor assembly selectively assumes the upright position in which its axis coaligns with the lengthwise axis of the rotor shaft, which is necessary for inserting the sensor assembly through a hole (9a) into the hole in the object being inspected, and a titled position in which its axis is inclined with respect to the axis of the rotor shaft, which is necessary for scanning the inner surface (8c) of the hole, by tilting mechanism (1). The rotor shaft is connected to a rotating mechanism (3) and a lifting mechanism (2).

Apparatus having a pivoted eddy current probe for detecting flaws in the

A transfer system includes an air table, and a linear motor cooperating with the air table to float and move a pallet. The transfer system is designed to allow for a small radius of curvature for each turning section of the air table. Ball valves of the air table are openable upon contact with a pallet to apply air under pressure to a pallet. A linear motor is adapted to move the floating pallet, and guides are provided to guide the moving floating pallet. The pallet includes a pallet body made of a light material, and an external load part made of metal. The external load part has a lower surface projecting slightly from the lower surface of the pallet body. Guides are mounted to the outer periphery of the pallet body. A linear motor secondary conductor is mounted to the lower surface of the pallet body.

Transfer system and transfer pallet

An apparatus for forming a glass product which comprises: a single glass gob feeding device for feeding a glass gob to a mold for forming a formed body; a press forming device for press forming the glass gob into the formed body of a predetermined shape; a formed body removing device; a plurality of carrier means on which the mold is loaded; and a transfer means for transferring and circulating the carrier means on which the mold is loaded in an order of the glass gob feeding device, the press forming device, the formed body removing device, and back to the glass gob feeding device; wherein, assuming a path is defined as a path for transferring and circulating the carrier means by the transfer means, a single path or a plurality of paths is or are provided for the single glass gob feeding device.

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Funabashi, Japan

Naoya Shimizu