US 6,648,708 B2Granted

Apparatus and method for measuring cathode-ray tube neck alignment and tilt

AssigneesSony Corporation, Sony Electronics Inc.

InventorChristopher Monks

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Abstract

An apparatus (20) for measuring alignment and tilt of a CRT neck (14) attached to a recycled CRT funnel portion (11) includes a support structure (21) that engages and supports a seal edge (24) of the CRT funnel portion (11), and a plurality of stopper pads (28-30) which engage respective alignment stoppers (34-36) molded on the CRT funnel portion (11). Distance measuring gauges (45-48) contact lower and upper points on two sides of the CRT neck (14). The alignment of the CRT neck (14) is determined by readings from the lower gauges (45, 47) on the first and second sides of the CRT neck (14). The tilt of the CRT neck (14) is measured by comparing the readings from the lower and upper gauges (45-48) on each of the first and second sides of the CRT neck. The stopper pads (28-30) on the support structure (21) can be changed to accommodate different sizes of CRT funnel portions (11, 11′).

Claims14

Dependent claims

An apparatus for measuring alignment and tilt of CRT necks attached to recycled CRT funnel portions, the CRT necks each having an axial center line and an outer surface which is generally cylindrical, the apparatus comprising:

a support structure having a first surface adapted to engage and support a seal edge of a CRT funnel portion;
at least two stopper surfaces extending from the support structure and adapted to engage respective alignment stoppers molded on the CRT funnel portion to position the CRT funnel portion on the support structure;
first and second distance measuring gauges mounted to said support structure, each of said first and second gauges having respective engagement portions adapted to engage the outer surface of a CRT neck being measured, the engagement portions of the first and second gauges being positioned on a first side of the CRT neck and facing the axial center line thereof with the first gauge being positioned below the second gauge;
and
third and fourth distance measuring gauges mounted to said support structure, each of said third and fourth gauges having respective engagement portions adapted to engage the outer surface of the CRT neck being measured, the engagement portions of the third and fourth gauges being positioned on a second side of the CRT neck and facing the axial center line thereof with the third gauge being positioned below the fourth gauge.

2 more elements

An apparatus for measuring alignment and tilt of a cylindrical member attached to a funnel-shaped member, the cylindrical member having an axial center line, the apparatus comprising:

a support structure having a first surface adapted to engage and support the funnel-shaped member;
at least two stopper surfaces connected to the support structure for engaging corresponding surfaces of the funnel-shaped member to position the funnel-shaped member on the support structure;
first and second distance measuring gauges mounted to said support structure, each of said first and second gauges having respective engagement portions adapted to engage the outer surface of the cylindrical member being measured, the engagement portions of the first and second gauges being positioned on a first side of the cylindrical member and facing the axial center line thereof with the first gauge being positioned below the second gauge;
and
third and fourth distance measuring gauges mounted to said support structure, each of said third and fourth gauges having respective engagement portions adapted to engage the outer surface of the cylindrical member being measured, the engagement portions of the third and fourth gauges being positioned on a second side of the cylindrical member and facing the axial center line thereof with the third gauge being positioned below the fourth gauge.

2 more elements

Dependencies are inferred from the claim text.