US3681640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ribbon conductor press seal structure
Assignee: Philips North America LLC
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Filing: 1970-11-04
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Granted: 1972-08-01
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Expires: 1990-11-04
Abstract
Abstract A lead-in conductor assembly for electric lamps is detailed. The lead-in conductor assembly comprises wire-type lead-in connected to opposite ends of ribbon-type lead-ins, with the ribbon-type lead-ins longitudinally spaced from one another in the direction which generally parallels the wire-type lead-in portion. This arrangement allows for more efficient heat dissipation within a small cross-sectional press-seal.
Inventors
- 👤 Jack Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:35
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
143 words
A single-ended tungsten-halogen incandescent lamp comprising a generally tubular envelope of vitreous, light-trAnsmissive material, a press-seal structure at one end of said lamp, two broad-width refractory metal ribbon conductors each of which carries the full-load current of said lamp, said ribbon conductors vacuum sealed within said press, electrical lead-in conductors extending from each end of said ribbon conductors, two of said lead-in conductors extending into said lamp and electrically connected to opposite ends of an incandescent coil substantially centrally disposed within said lamp, the remaining of said lead-in conductors extending outwardly from said press are adapted to be connected to a potential source, the improvement comprising disposing said two broad-width, full-load current-carrying ribbon conductors within said press-seal of said tungsten-halogen lamp, and disposing said broad-width ribbon conductors in an off-set, spaced, generally tandem relationship, thereby permitting a higher current rating for said lamp.
Claim 2
Dependent Claim
143 words
A single-ended tungsten-halogen incandescent lamp comprising a generally tubular envelope of vitreous, light-trAnsmissive material, a press-seal structure at one end of said lamp, two broad-width refractory metal ribbon conductors each of which carries the full-load current of said lamp, said ribbon conductors vacuum sealed within said press, electrical lead-in conductors extending from each end of said ribbon conductors, two of said lead-in conductors extending into said lamp and electrically connected to opposite ends of an incandescent coil substantially centrally disposed within said lamp, the remaining of said lead-in conductors extending outwardly from said press are adapted to be connected to a potential source, the improvement comprising disposing said two broad-width, full-load current-carrying ribbon conductors within said press-seal of said tungsten-halogen lamp, and disposing said broad-width ribbon conductors in an off-set, spaced, generally tandem relationship, thereby permitting a higher current rating for said lamp.
Claim 3
Dependent Claim
39 words
The combination as specified in claim 1, wherein said ribbon conductors are sufficiently broad to partially overlap one another in the direction perpendicular to the direction of extension of said wire-type lead-in portions to enhance the heat-dissipating characteristics thereof.
Claim 4
Dependent Claim
21 words
The combination as specified in claim 1, wherein said ribbon conductors are laterally spaced from the center line of the press-seal.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |