Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
205 words
For use in the manufacture of a cathode ray tube an apparatus for testing a hermetic, glass-like, frit seal between the funnel and the faceplate of an in-process cathode ray tube wherein the inside of said funnel has a conductive coating adapted to receive a test voltage applied to an anode button on a wall of said funnel, and wherein a discontinuity in the hermetic seal causes a high voltage breakdown in the seal, said apparatus comprising: an electrically conductive elastomeric band capable of being stretched over the tube so as to conform to said hermetic seal between said funnel and faceplate; means for supporting and locating said cathode ray tube in a position to be tested; band mounting means for holding said elastomeric band and for stretching said elastomeric band to a rectangular stretched configuration larger than the size of the faceplate of the tube to be tested, and for relaxing the band such that it makes a static fit around hermetic seal on said tube and conforms intimately to said seal to make an uninterrupted electrical and mechanical engagement therewith; and means for applying a test voltage across the hermetic seal of said cathode ray tube between said conductive coating and said band.
Claim 2
Dependent Claim
205 words
For use in the manufacture of a cathode ray tube an apparatus for testing a hermetic, glass-like, frit seal between the funnel and the faceplate of an in-process cathode ray tube wherein the inside of said funnel has a conductive coating adapted to receive a test voltage applied to an anode button on a wall of said funnel, and wherein a discontinuity in the hermetic seal causes a high voltage breakdown in the seal, said apparatus comprising: an electrically conductive elastomeric band capable of being stretched over the tube so as to conform to said hermetic seal between said funnel and faceplate; means for supporting and locating said cathode ray tube in a position to be tested; band mounting means for holding said elastomeric band and for stretching said elastomeric band to a rectangular stretched configuration larger than the size of the faceplate of the tube to be tested, and for relaxing the band such that it makes a static fit around hermetic seal on said tube and conforms intimately to said seal to make an uninterrupted electrical and mechanical engagement therewith; and means for applying a test voltage across the hermetic seal of said cathode ray tube between said conductive coating and said band.
Claim 3
Dependent Claim
56 words
An apparatus in accordance with claim 1 wherein said elastomeric band is a discontinuous piece of elastomeric material having fastening means on each end thereof, whereby when stretched around said frit seal said ends overlap, conforming said band to the shape of said frit seal establishing continuous mechanical and electrical contact between said band and seal.
Claim 4
Dependent Claim
52 words
An apparatus in accordance with claim 1 wherein said elastomeric band is a continuous piece of elastomeric material having a substantially circular shape and oval cross-section capable of conforming to and establishing intimate mechanical and electrical contact with the peripheral portion of said frit seal protruding from said funnel and faceplate interface.
Claim 5
Dependent Claim
40 words
An apparatus in accordance with claim 1 wherein said band mounting means comprises an elevating means and a cantilevered hand and finger-like structure coupled to said elevating means, the fingers of said structure for stretching and relaxing said elastomeric band.
Claim 6
Dependent Claim
54 words
An apparatus in accordance with claim 4 wherein said fingers are for producing relative movement with respect to said hand-like structure, coupling said elastomeric band to said hand-like structure, whereby on relative movement said fingers stretch or relax said band to fit around the frit seal on a predetermined size, in-process cathode ray tube.