Patent US4200904A successfully refreshed from Google Patents.
US4200904A
Expired / Lapsed
US
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Solar powered street lighting system
Assignee: Individual
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Filing: 1978-04-14
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Granted: 1980-04-29
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Expires: 1998-04-14
Abstract
Abstract A solar powered street lighting system that is totally independent of any external power supply. Solar panels are connected in such a manner to charge a maintenance-free storage battery with sufficient capacity to light street lights and/or traffic signals. An auxiliary generator may also be provided having a wind driven vane for also charging the battery if sufficient sun light is not available.
Inventors
- 👤 Duc Doan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:14
CPC Classifications
F; F21; F21S; F21S9/00; F21S9/02; F21S9/03; F21S9/035; F21S8/00; F21S8/08; F21S8/085; F21S8/086; F21S9/026; F21S9/04; F21S9/043; G; G08; G08G; G08G1/00; G08G1/09; G08G1/095; F21W; F21W2131/00; F21W2131/10; F21W2131/103; Y; Y02; Y02B; Y02B20/00; Y02B20/72; Y10; Y10S; Y10S136/00; Y10S136/291
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
141 words
A totally independent street light system comprising: an upright pole adapted to be mounted on a supporting surface; a dry storage battery; a plurality of solar panels coupled to said battery, each of said panels having a plurality of solar cells connected in series for providing a predetermined voltage to said battery, each of said panels connected in parallel to provide a predetermined amperage to said battery, all of said panels being mounted in a single unitary assembly on said pole; a street light mounted on said pole electrically coupled to said battery and actuated by said battery; wind driven alternator means mounted on said pole coupled to said battery for providing capacity to said battery augmenting said solar panels; and a light actuated photocell coupled to said light for selectively lighting said light dependent upon light conditions at said pole.
Claim 2
Dependent Claim
141 words
A totally independent street light system comprising: an upright pole adapted to be mounted on a supporting surface; a dry storage battery; a plurality of solar panels coupled to said battery, each of said panels having a plurality of solar cells connected in series for providing a predetermined voltage to said battery, each of said panels connected in parallel to provide a predetermined amperage to said battery, all of said panels being mounted in a single unitary assembly on said pole; a street light mounted on said pole electrically coupled to said battery and actuated by said battery; wind driven alternator means mounted on said pole coupled to said battery for providing capacity to said battery augmenting said solar panels; and a light actuated photocell coupled to said light for selectively lighting said light dependent upon light conditions at said pole.
Claim 3
Dependent Claim
28 words
In the system of claim 1 further including a traffic signal having a plurality of vertically linearly disposed lights mounted on said pole electrically connected to said battery.
Claim 4
Dependent Claim
22 words
In the system of claim 1 wherein said battery is a 12 V. 100 amp, D.C. three-year maintenance free dry storage battery.
Claim 5
Dependent Claim
15 words
In the system of claim 3 wherein said light is a 12 Volt D.C. light.
Claim 6
Dependent Claim
70 words
In the system of claim 1 wherein each of said panels comprises at least thirty 1/2 Volt silicon photovoltaic cells connected in series with a diode to prevent backflow of current from the battery through the cells during darkness, the total number of said panels mounted in parallel being sufficient to provide a total current output to return said battery to its rated amperage capacity after lighting of said light.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |