US3876899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube electrical connective means
Assignee: GTE Sylvania Inc
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Filing: 1974-06-27
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Granted: 1975-04-08
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Expires: 1994-06-27
Abstract
Abstract Improved electrical connective means are provided for use in a cathode ray tube to effect a bridging connection between a funnel-oriented electrical transversal and a discrete area of the adjacent panel portion. The connective means comprises a metallic conductive button extending through the wall of the funnel and having a protuberance extending from the inner surface thereof. Mating with this protuberance, and affixed thereto, is a longitudinal resilient connective member extending to make pressured contact with a discrete area on the related panel portion of the envelope.
Inventors
- 👤 Charles A Davis
- 👤 Donald L Say
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:44
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/92; H01J29/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
190 words
An electrical connective improvement in a cathode ray tube incorporating an envelope formed of an integration of a neck portion having an electron gun assembly located therein, a funnel portion joined thereto, said funnel portion being sequentially sealed to a contiguous panel portion having a cathodoluminescent screen formed on the inner surface thereof with an electrode member oriented in spatial relationship thereto, said improvement being the means for effecting a bridging electrical connection from said funnel portion to said panel portion comprising: an isolated metallic conductive button traversing the wall of said envelope, said conductive button having a substantially defined bonding region located on the inner surface thereof oriented within said tube; and a substantially longitudinal resilient metallic connective member having a jointure region formed at one end thereof and a contact area at the other with a bridging resilient intermediate section therebetween, said jointure region being mated with and affixed to the bonding region of said button in a manner to direct said connective member toward said panel, said contact area of said connective member being contoured to effect slidable pressured contact on a related area in said panel.
Claim 2
Dependent Claim
190 words
An electrical connective improvement in a cathode ray tube incorporating an envelope formed of an integration of a neck portion having an electron gun assembly located therein, a funnel portion joined thereto, said funnel portion being sequentially sealed to a contiguous panel portion having a cathodoluminescent screen formed on the inner surface thereof with an electrode member oriented in spatial relationship thereto, said improvement being the means for effecting a bridging electrical connection from said funnel portion to said panel portion comprising: an isolated metallic conductive button traversing the wall of said envelope, said conductive button having a substantially defined bonding region located on the inner surface thereof oriented within said tube; and a substantially longitudinal resilient metallic connective member having a jointure region formed at one end thereof and a contact area at the other with a bridging resilient intermediate section therebetween, said jointure region being mated with and affixed to the bonding region of said button in a manner to direct said connective member toward said panel, said contact area of said connective member being contoured to effect slidable pressured contact on a related area in said panel.
Claim 3
Dependent Claim
36 words
The connective improvement according to claim 1 wherein said bonding region of said conductive button is formed as a solid stud-like jointure protuberance oriented in substantially the center region of the inner surface of said button.
Claim 4
Dependent Claim
42 words
The connective improvement according to claim 2 wherein said stud-like jointure protuberance is formed as a substantially flattish stub-like tongue, the orientation of the plane of said stub being substantially parallel with the seal line joining said funnel and said panel portions.
Claim 5
Dependent Claim
34 words
The connective improvement according to claim 1 wherein the jointure region of said connective member is formed as a substantially U-shaped configuration invertedly positioned on and affixed to said stud-like protuberance on said button.
Claim 6
Dependent Claim
35 words
The connective improvement according to claim 1 wherein the forward contact area of said connective member is formed to have a substantially reverse-turned leading edge to facilitate sliding contact with a related panel-disposed conductive area.
Claim 7
Dependent Claim
29 words
The connective improvement according to claim 1 wherein said conductive button traverses the funnel portion of said envelope in the region substantially proximal to the region of the panel-seal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |