North American Philips Consumer Electronics Corp.

Gte Sylvania Incorporated

Gte Products Corporation

Floyd K Collins

Donald L Say

Thaddeus V Rychlewski

Frederick A Hovey

Alan T Kuryla

Glen A Burdick

Loren L Maninger

George E Hassler

The invention relates to improved strengthening means for a substantially planar one-piece electrode component utilized in an in-line multi-beam CRT electron gun assembly. Advantageous ruggedizing properties are achieved by discretely formed longitudinal channels oriented along the sides of the component with defined ledge portions extending outward therefrom; beneficially dimensioned supporting projections are formed as integral extensions thereof. A plurality of cooperating mini-channels are included as transversals in the component to provide a markedly improved structure.

Strengthening means for a CRT in-line electrode component

A CRT electron gun electrode is provided with an improved beam shaping region having an elongated recess coined in the upper electrode surface and an opposed coined depression in the lower surface. The double coining fabrication method assures a sharp perimetrical edge about at least the central portion of the recess, such being an important influence in achieving improved beam shaping lensing.

Beam shaping CRT electrode and method of fabricating same

Beam shaping CRT electrode

Planar apertured shunts surrounding the outer apertures of the final convergence electrode of a color cathode ray tube electron gun, used for correction of the beam-deflecting magnetic fields associated with the outer electron beams, are captivated by apertured retaining means, having shunt-accommodating pockets surrounded by a peripheral seating rim affixed to the bottom of the convergence electrode.

CRT Shunt retaining means

The invention relates to incorporating improved beam shielding means into the unitized focusing electrode structure of a plural beam in-line color cathode ray tube electron gun assembly. At least a portion of the G3 electrode structure is fabricated of a magnetic alloy material. Positioned forward and adjacent to the magnetic portion is an apertured planar shielding means also fabricated of magnetic material. The cooperation of these adjoining magnetic areas provides significant shielding of the beams from the deleterious back-field of the deflection yoke.

Cathode ray tube focusing electrode shielding means

The invention relates to disc-like metallic means for supporting the cathode assembly in a miniaturized cathode ray tube single electron gun structure. Its substantially planar construction with radially extending supporting leg elements incorporates shapings which achieve both compactness and ruggedness. The beneficial strengthening effects are provided by the integration of a rim on the disc portion with U-shaped cross-sectional shapings of the leg elements.

CRT Cathode assembly with support means

A cathode eyelet has its cathode receiving end formed in an elliptical cross-section. Pressure on the long axis opens the short axis to a dimension large enough to admit the cathode. Removal of the pressure allows the sides of the ellipse defined by the short axis to collapse and frictionally retain the cathode in position until it is welded to the eyelet.

Method of mounting a cathode and eyelet for use therewith

A one-piece control grid for functioning as an astigmatic lens in an electron gun has an arcuate slot formed in the face of the grid. A suitable beam aperture is provided at the bottom of the slot.

One piece astigmatic grid for color picture tube electron gun and method

A shielded cathode support structure for electron gun assemblies of a cathode ray tube includes a cup-shaped control grid electrode, a cathode having emissive coating on a closed end, an eyelet member having one end affixed to and supporting the cathode and the opposite end flared and disposed within the control grid electrode to combine to provide a shield for cathode sublimation, and a support member having an upstanding flared portion surrounding an aperture for receiving the eyelet member and for contacting the flared end of the eyelet member with the support member affixed to an insulator rod of the electron gun assembly.

Shielded cathode support structure

The invention relates to an improved planar electrode member for use in an in-line multi-beam cathode ray tube electron gun assembly. The improved electrode is a substantially planar one-piece member having a plurality of apertures therein. The side portions of the member have longitudinal strengthening bends formed therealong in conjunction with a plurality of rib embossments spatially formed as traversals crossing the member to join the side oriented bends thereby providing improved strengthening to the structure.

CRT in-line gun electrode having strengthening ribs

The invention relates to an improved one-piece electrode member for use in an in-line multi-beam cathode ray tube electron gun assembly. The improved electrode has a plurality of spaced apart in-line apertures individually oriented in cup-like depressions which are collectively encompassed by a configurated continuous rim forming a cup encompassing unitized portion within the member. Formed contiguously with each side of the unit is a substantially longitudinal rib embossment having at least one complementary rib projecting therefrom in an angular manner to extend through supporting projections of the electrode. The discretely located conjunctive embossing configurations of the member provide marked strengthening to the in-line structure.

Longitudinal rib embossment in tri-apertured, substantially planar

An improvement in the means for supporting individually shielded cathodes is provided in a plural beam cathode ray tube electron generating assembly incorporating an in-line electron gun arrangement integrated by four spaced-apart longitudinal insulative rod-like supporting members. Each of the individual all-metal cathode assemblies is separately supported in a spatial manner apart from the related cup-like control electrode wherein a portion of the respective cathode assembly is oriented. The three cathode positioning members have discretely formed extremital portions embedded in the longitudinal supporting member to provide improved shielding and enhanced structural end-support for the in-line gun assembly.

Cathode support means for a CRT electron generating assembly

An improvement is provided in a plural beam cathode ray tube electron gun assembly wherein positive positioning and embedment of the heater support means is achieved. One of a plurality of heater support means is oriented in each of a plurality of longitudinal rods supporting the gun assembly, in the area intervening between the embedded termini of two adjacently positioned cathode assembly support means positioned in side-by-side relationship. During gun assembly fabrication, localized movement of the softened glass of the rod, is restricted between the termini thereby effecting improved embedment of the heater support therebetween.

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Seneca Falls, NY, United States of America

Floyd K Collins