Patent US6487350B1 successfully refreshed from Google Patents.
US3697802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-terminal, two-color indicator lamp assembly
Assignee: Cooper Industries LLC
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Filing: 1970-10-12
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Granted: 1972-10-10
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Expires: 1990-10-12
Abstract
Abstract A two-terminal, two-color indicator lamp assembly comprising two separately energizable filaments positioned behind differentcolored portions of the lamp envelope along the line of sight. The lamp envelope is mechanically connected to a pair of terminals to form a telephone slide base, and a pair of diodes is interconnected between said terminals and said filaments to enable energization of one filament only when the polarity of the first terminal is positive with respect to the polarity of the second terminal, and to enable energization of the other filament only when the polarity of said second terminal is positive with respect to the first terminal.
Inventors
- 👤 Nickolas P Demas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:07
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/62; G; G08; G08B; G08B5/00; G08B5/22; G08B5/36
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
179 words
A lamp assembly comprising: 1. a lamp envelope having first and second portions of which at least said second portion is translucently colored; 2. first and second filaments spaced apart within said lamp envelope, said first filament being positioned behind said first portion along the line of sight and said second filament being positioned behind said second portion along the line of sight; 3. first and second supporting means operative to retain said first and second filaments, respectively, in position within said lamp envelope, and having lead portions extending through and exterior of said lamp envelope; 4. first and second terminals mechanically connected to said lamp envelope and insulated from one another; and 5. polarity-sensing circuit means interconnected between said lead portions and said first and second terminals to enable energization only of said second filament when said first terminal is at a minimum predetermined positive potential with respect to said second terminal, and to enable energization only of said first filament when said second terminal is at a minimum predetermined positive potential with respect to said first terminal.
Claim 2
Dependent Claim
179 words
A lamp assembly comprising: 1. a lamp envelope having first and second portions of which at least said second portion is translucently colored; 2. first and second filaments spaced apart within said lamp envelope, said first filament being positioned behind said first portion along the line of sight and said second filament being positioned behind said second portion along the line of sight; 3. first and second supporting means operative to retain said first and second filaments, respectively, in position within said lamp envelope, and having lead portions extending through and exterior of said lamp envelope; 4. first and second terminals mechanically connected to said lamp envelope and insulated from one another; and 5. polarity-sensing circuit means interconnected between said lead portions and said first and second terminals to enable energization only of said second filament when said first terminal is at a minimum predetermined positive potential with respect to said second terminal, and to enable energization only of said first filament when said second terminal is at a minimum predetermined positive potential with respect to said first terminal.
Claim 3
Dependent Claim
39 words
first and second filaments spaced apart within said lamp envelope, said first filament being positioned behind said first portion along the line of sight and said second filament being positioned behind said second portion along the line of sight;
Claim 4
Dependent Claim
39 words
first and second filaments spaced apart within said lamp envelope, said first filament being positioned behind said first portion along the line of sight and said second filament being positioned behind said second portion along the line of sight;
Claim 5
Dependent Claim
22 words
The lamp assembly according to claim 1 wherein said first and second portions of said lamp envelope form a substantially flat end.
Claim 6
Dependent Claim
17 words
The lamp assembly according to claim 1 wherein said first portion of said lamp envelope is clear.
Claim 7
Dependent Claim
32 words
first and second supporting means operative to retain said first and second filaments, respectively, in position within said lamp envelope, and having lead portions extending through and exterior of said lamp envelope;
Claim 8
Dependent Claim
32 words
first and second supporting means operative to retain said first and second filaments, respectively, in position within said lamp envelope, and having lead portions extending through and exterior of said lamp envelope;
Claim 9
Dependent Claim
16 words
first and second terminals mechanically connected to said lamp envelope and insulated from one another; and
Claim 10
Dependent Claim
16 words
first and second terminals mechanically connected to said lamp envelope and insulated from one another; and
Claim 11
Dependent Claim
53 words
The lamp assembly according to claim 1 wherein said first and second supporting means each comprises a pair of support members extending through first and second insulating members, respectively, which serve to space each support member of each pair from one another and to space each pair of support members from the other.
Claim 12
Dependent Claim
70 words
The lamp assembly according to claim 1 wherein said polarity sensing means comprises first and second diodes, each having its cathode connected to one side of each filament, and said first diode having its anode connected to the other side of said first filament and to said terminal, and the anode of said second diode being connected to the other side of said second filament and to said second terminal.
Claim 13
Dependent Claim
65 words
polarity-sensing circuit means interconnected between said lead portions and said first and second terminals to enable energization only of said second filament when said first terminal is at a minimum predetermined positive potential with respect to said second terminal, and to enable energization only of said first filament when said second terminal is at a minimum predetermined positive potential with respect to said first terminal.
Claim 14
Dependent Claim
65 words
polarity-sensing circuit means interconnected between said lead portions and said first and second terminals to enable energization only of said second filament when said first terminal is at a minimum predetermined positive potential with respect to said second terminal, and to enable energization only of said first filament when said second terminal is at a minimum predetermined positive potential with respect to said first terminal.
Claim 15
Dependent Claim
44 words
The lamp assembly according to claim 1 wherein said lamp envelope has a pointed region mechanically connected to portions of said first and second terminals by an insulating cement which also serves to separate and insulate said first and second terminals from one another.
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |