US4149103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incandescent lamp having embedded support means
Assignee: GTE Sylvania Inc
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Filing: 1978-01-27
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Granted: 1979-04-10
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Expires: 1998-01-27
Abstract
Abstract In a press-sealed single-ended tubular incandescent lamp, the support means thereof is embedded in the press seal and protrudes from the edge thereof, substantially orthogonal to the axis of the lamp.
Inventors
- 👤 Paul E. Gates
- 👤 Stephen F. Kimball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:48
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
In a single-ended tubular incandescent lamp containing a tungsten filament and having a press seal at one end thereof, the tungsten filament being supported on lead-in wires that are sealed in the press seal, the improvement which comprises support means at each side of the press seal, said support means being independent of said lead-in wires, each support means being embedded in the press seal and extending from the longitudinal edge thereof substantially perpendicular to the envelope axis, the support means being substantially coplanar with the press seal, the support means capable of being fastened, such as by welding or brazing, to a support rod substantially coplanar with the support means and at a plurality of points thereof that run lengthwise with the lamp.
Claim 2
Dependent Claim
124 words
In a single-ended tubular incandescent lamp containing a tungsten filament and having a press seal at one end thereof, the tungsten filament being supported on lead-in wires that are sealed in the press seal, the improvement which comprises support means at each side of the press seal, said support means being independent of said lead-in wires, each support means being embedded in the press seal and extending from the longitudinal edge thereof substantially perpendicular to the envelope axis, the support means being substantially coplanar with the press seal, the support means capable of being fastened, such as by welding or brazing, to a support rod substantially coplanar with the support means and at a plurality of points thereof that run lengthwise with the lamp.
Claim 3
Dependent Claim
103 words
In a single-ended tubular incandescent lamp containing a tungsten filament and having a press seal at one end thereof, the tungsten filament being supported on lead-in wires that are sealed in the press seal, the improvement which comprises support means at each side of the press seal, said support means being independent of said lead-in wires, each support means being so disposed that a support rod generally extending longitudinally with respect to the lamp can be fastened to said support means at at least two points that are apart from each other in a direction that is longitudinal with respect to the lamp.
Claim 4
Dependent Claim
103 words
In a single-ended tubular incandescent lamp containing a tungsten filament and having a press seal at one end thereof, the tungsten filament being supported on lead-in wires that are sealed in the press seal, the improvement which comprises support means at each side of the press seal, said support means being independent of said lead-in wires, each support means being so disposed that a support rod generally extending longitudinally with respect to the lamp can be fastened to said support means at at least two points that are apart from each other in a direction that is longitudinal with respect to the lamp.
References Cited (Backward Citations)
US2542326A
Cited
US3617797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |