Implosion protection system for color CRT bulb having a bonded funnel frame

Claim 2

A color television picture tube having a glass bulb with an approximately rectangular, flangeless, curved faceplate having a convex front surface through which television pictures are viewed, a concave rear surface with a phosphor screen deposited on a portion thereof, the glass bulb also having a funnel having a convex seal land which mates with the concave inner surface of the faceplate to define a contoured sealing interface, said tube including a low cost funnelbond implosion protection system comprising: a high tensile strength frame which surrounds and hugs a portion of said funnel adjacent to said faceplate; and a cement between said frame and said funnel, said cement and said frame binding up said funnel portion to provide implosion protection.

Claim 3

The combination defined by claim 1 wherein said faceplate has a marginal portion which overhangs said funnel and wherein a front edge of said frame contacts said rear surface of said marginal portion of said faceplate for positioning said frame relative to said funnel.

Claim 4

A color television picture tube having a glass bulb with an approximately rectangular, flangeless, curved faceplate having a convex front surface through which television pictures are viewed, a concave rear surface with a phosphor screen deposited on a portion thereof, the glass bulb also having a funnel having a convex seal land which mates with the concave inner surface of the faceplate to define a contoured sealing interface, said tube including a low cost funnelbond implosion protection system comprising: a scalloped, metal high tensile strength frame which surrounds and hugs a portion of said funnel adjacent to said faceplate and which covers said sealing interface; and an electrically insulative epoxy-type cement between said frame and said funnel which with said frame embraces and binds up said sealing interface and said portion of said funnel, said cement also serving to electrically insulate said sealing interface.

Claim 5

A color television picture tube having a glass bulb with an approximately rectangular, flangeless, curved faceplate having a convex front surface through which television pictures are viewed, a concave rear surface with a phosphor screen deposited on a portion thereof, the glass bulb also having a funnel having a convex seal land which mates with the concave inner surface of the faceplate to define a contoured sealing interface, said tube including a low cost funnelbond implosion protection system comprising: a scalloped, metal high tensile strength frame which surrounds and hugs a portion of said funnel adjacent to said faceplate and which covers said sealing interface; and an electrically insulative epoxy-type cement between said frame and said funnel which with said frame embraces and binds up said sealing interface and said portion of said funnel, said cement also serving to electrically insulate said sealing interface.

Claim 6

The combination defined by claim 3 wherein said faceplate has a marginal portion which overhangs said funnel and wherein a front edge of said frame contacts said-rear surface of said marginal portion of said faceplate for positioning said frame relative to said funnel.

Claim 7

A color television picture tube having a glass bulb with an approximately rectangular, flangeless, curved faceplate having a convex front surface through which television pictures are viewed, a concave rear surface with a phosphor screen deposited on a portion thereof, and a peripheral edge surface connecting the convex front surface and the concave rear surface of the faceplate, the peripheral edge surface being contoured, that is, having sides which depart from and return to a plane connecting the four corners of the faceplate, the glass bulb also having a funnel having a convex seal land which mates with the concave inner surface of the faceplate to define a contoured sealing interface, said tube including a low cost funnelbond implosion protection system comprising: a high tensile strength frame which surrounds and hugs a portion of said funnel adjacent to said faceplate and which surrounds and hugs said edge surface of said faceplate; and a cement between said frame and said bulb, said cement and said frame binding up said portion of said funnel and said edge surface of said faceplate.

Claim 8

A color television picture tube having a glass bulb with an approximately rectangular, flangeless, curved faceplate having a convex front surface through which television pictures are viewed, a concave rear surface with a phosphor screen deposited on a portion thereof, and a peripheral edge surface connecting the convex front surface and the concave rear surface of the faceplate, the peripheral edge surface being contoured, that is, having sides which depart from and return to a plane connecting the four corners of the faceplate, the glass bulb also having a funnel having a convex seal land which mates with the concave inner surface of the faceplate to define a contoured sealing interface, said tube including a low cost funnelbond implosion protection system comprising: a high tensile strength frame which surrounds and hugs a portion of said funnel adjacent to said faceplate and which surrounds and hugs said edge surface of said faceplate; and a cement between said frame and said bulb, said cement and said frame binding up said portion of said funnel and said edge surface of said faceplate.

Claim 9

The combination defined by claim 5 wherein said frame substantially covers the entire area of said edge surface without extending beyond said front surface of said faceplate.

Claim 10

A color television picture tube having a glass bulb with an approximately rectangular, flangeless, curved faceplate having a convex front surface through which television pictures are viewed, a concave rear surface with a phosphor screen deposited on a portion thereof, and a peripheral edge surface connecting the convex front surface and the concave rear surface of the faceplate, the peripheral edge surface being contoured, that is, having sides which depart from and return to a plane connecting the four corners of the faceplate, the glass bulb also having a funnel having a convex seal land which mates with the concave inner surface of the faceplate to define a contoured sealing interface, said faceplate having a marginal portion which overhangs said funnel, said tube including a low cost funnelbond implosion protection system comprising: a scalloped, metal high tensile strength frame which surrounds and hugs a portion of said funnel adjacent to said faceplate, said frame having a forward portion which is offset radially outwardly to surround and hug said edge surface of said faceplate and said marginal portion of said faceplate which overhangs said funnel, the contour of said frame corresponding substantially to the contour of said edge surface and said funnel portion and covering said sealing interface; and an electrically insulative epoxy-type cement between said frame and said bulb which with said frame embraces and binds up said portion of said funnel, said edge surface of said faceplate, and said sealing interface, said cement also serving to electrically insulate said sealing interface.

Claim 11

A color television picture tube having a glass bulb with an approximately rectangular, flangeless, curved faceplate having a convex front surface through which television pictures are viewed, a concave rear surface with a phosphor screen deposited on a portion thereof, and a peripheral edge surface connecting the convex front surface and the concave rear surface of the faceplate, the peripheral edge surface being contoured, that is, having sides which depart from and return to a plane connecting the four corners of the faceplate, the glass bulb also having a funnel having a convex seal land which mates with the concave inner surface of the faceplate to define a contoured sealing interface, said faceplate having a marginal portion which overhangs said funnel, said tube including a low cost funnelbond implosion protection system comprising: a scalloped, metal high tensile strength frame which surrounds and hugs a portion of said funnel adjacent to said faceplate, said frame having a forward portion which is offset radially outwardly to surround and hug said edge surface of said faceplate and said marginal portion of said faceplate which overhangs said funnel, the contour of said frame corresponding substantially to the contour of said edge surface and said funnel portion and covering said sealing interface; and an electrically insulative epoxy-type cement between said frame and said bulb which with said frame embraces and binds up said portion of said funnel, said edge surface of said faceplate, and said sealing interface, said cement also serving to electrically insulate said sealing interface.

Claim 12

The combination defined by claim 7 wherein said frame substantially covers the entire area of said edge surface without extending beyond said front surface of said faceplate.