US4200904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar powered street lighting system
Assignee: Individual
•
Filing: 1978-04-14
•
Granted: 1980-04-29
•
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
2026-10-24 12:56
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.
References Cited (Backward Citations)
US2894173A
Cited
US2901669A
Cited
US3048833A
Cited
US3317809A
Cited
US3353191A
Cited
US3508731A
Cited
US3774023A
Cited
US3979656A
Cited
US4041452A
Cited
US4009535A
Cited
US4080221A
Cited
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 |