US4138623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp leads
Assignee: General Electric Co
•
Filing: 1978-03-23
•
Granted: 1979-02-06
•
Expires: 1998-03-23
Abstract
Abstract Dispersion strengthened copper leads are used for inner and/or outer leads in electric lamps.
Inventors
- 👤 John E. McMillan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:05
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/18; H01K1/20; H01J; H01J61/00; H01J61/02; H01J61/36; H01J61/366; H01K1/40
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
52 words
A general service incandescent lamp having a mount comprising at least two inner lead wires; a refractory filament clamped one end to each of said lead wires; wherein the improvement comprises at least a portion of said lead wires comprising dispersion strengthened copper wire and at least said lead wires are unsupported.
Claim 2
Dependent Claim
52 words
A general service incandescent lamp having a mount comprising at least two inner lead wires; a refractory filament clamped one end to each of said lead wires; wherein the improvement comprises at least a portion of said lead wires comprising dispersion strengthened copper wire and at least said lead wires are unsupported.
Claim 3
Dependent Claim
17 words
The incandescent lamp as set forth in claim 1 wherein said inner lead wires are nickel plated.
Claim 4
Dependent Claim
13 words
A lamp as set forth in claim 1 wherein said filament is unsupported.
Claim 5
Dependent Claim
74 words
A mount for an electric lamp comprising: a flare; an exhaust tube inserted in said flare; at least two lead wires inserted in said flare, said flare being pressed closed at one end thereof around said exhaust tube and lead wires; at least one refractory metal filament connected to one end of each of said lead wires; and wherein the improvement comprises at least a portion of said lead wires comprising dispersion strengthened copper.
Claim 6
Dependent Claim
74 words
A mount for an electric lamp comprising: a flare; an exhaust tube inserted in said flare; at least two lead wires inserted in said flare, said flare being pressed closed at one end thereof around said exhaust tube and lead wires; at least one refractory metal filament connected to one end of each of said lead wires; and wherein the improvement comprises at least a portion of said lead wires comprising dispersion strengthened copper.
Claim 7
Dependent Claim
16 words
The mount as set forth in claim 4 wherein said inner lead wires are nickel plated.
Claim 8
Dependent Claim
25 words
The mount as set forth in claim 4 wherein said lead wires comprise inner and outer portions, said inner portions comprising said dispersion strengthened copper.
Claim 9
Dependent Claim
17 words
The mount as set forth in claim 6 wherein at least said inner lead wires are unsupported.
Claim 10
Dependent Claim
13 words
The mount as set forth in claim 7 wherein said filament is unsupported.
References Cited (Backward Citations)
US2716714A
Cited
US3143789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |