US3735185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp assembly
Assignee: GTE Sylvania Inc
•
Filing: 1971-03-05
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Granted: 1973-05-22
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Expires: 1991-03-05
Abstract
Abstract A tubular tip-less lamp is manufactured by exhausting and filling the lamp through an open end of an extra long tubular envelope, the other end being sealed. The envelope is then presssealed at a section thereof located a short distance from the open end and the extra length of the envelope is then removed.
Inventors
- 👤 R Bonazoli
- 👤 J Keenan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:26
CPC Classifications
H; H01; H01K; H01K3/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
An incandescent lamp assembly comprising a smooth surfaced quartz tube press sealed at one end and open at the other end; a coiled tungsten filament axially disposed within said tube; a first end of said filament connected to a first molybdenum ribbon; said ribbon being embedded within said press seal; a second end of said filament connected to a second molybdenum ribbon, said second ribbon disposed within said tube and spaced from said open enD a distance greater than the length of said ribbon; a lead-in wire connected to said second ribbon; a first means positioning said lead-in wire axially within said tube; and a second means connected to said lead-in wire maintaining said filament in tension.
Claim 2
Dependent Claim
117 words
An incandescent lamp assembly comprising a smooth surfaced quartz tube press sealed at one end and open at the other end; a coiled tungsten filament axially disposed within said tube; a first end of said filament connected to a first molybdenum ribbon; said ribbon being embedded within said press seal; a second end of said filament connected to a second molybdenum ribbon, said second ribbon disposed within said tube and spaced from said open enD a distance greater than the length of said ribbon; a lead-in wire connected to said second ribbon; a first means positioning said lead-in wire axially within said tube; and a second means connected to said lead-in wire maintaining said filament in tension.
Claim 3
Dependent Claim
21 words
The lamp assembly of claim 1 wherein said second means comprises a crossbar bearing against said open end of sais tube.
Claim 4
Dependent Claim
23 words
The lamp assembly of claim 1 wherein said first means comprises a spacer ring bearing against the inner wall surface of said tube.
References Cited (Backward Citations)
US3211950A
Cited
US3602761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |