US3875421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicycle light system
Assignee: Needs Inc
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Filing: 1973-11-09
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Granted: 1975-04-01
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Expires: 1993-11-09
Abstract
Abstract A lighting system for bicycles having an alternating current generator driven by the bicycle. A rechargeable battery is connected to the generator through a diode to thus charge the battery on one half of the a.c. cycle. There is also a second diode and a single pole double throw switch. In one of its two positions the switch energizes the bicycle light through the second diode on the other half of the a.c. cycle. In its other position said switch places the light across the battery.
Inventors
- 👤 David S Anshus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:13
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/1407; B; B62; B62J; B62J6/00; B62J6/01; B62J6/015; B62J6/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
277 words
A bicycle lighting system comprising, in combination: an alternating current generator adapted to be driven at variable speed by the bicycle, an electrical light adapted to be mounted on the bicycle, a rechargeable battery, an electrical connection from one side of the generator to one side of the battery and to one side of the electric light, a first diode, a first side of which is an anode and a second side of which is a cathode, one side of said diode being connected to the other side of said alternating current generator anD the other side of said diode being connected to the other side of said rechargeable battery, whereby the battery is charged on one half of the cycle of said alternating current generator when the voltage of the alternating current generator exceeds the voltage of the rechargeable battery, a second diode, a first side of which is an anode and a second side of which is a cathode, one side of said second diode being connected to said one side of said first diode, said last-named connection being between an anode of one of the diodes and a cathode of the other, and switching means connected to the other side of said electric light, to the said other side of said first diode, and to the other side of said second diode for selecting between two circuits, one of which places the electric light, the generator and the second diode in series to thus energize said electric light during the other half cycle of said alternating current generator, and the other of which circuits places the rechargeable battery and the electric light in parallel.
Claim 2
Dependent Claim
277 words
A bicycle lighting system comprising, in combination: an alternating current generator adapted to be driven at variable speed by the bicycle, an electrical light adapted to be mounted on the bicycle, a rechargeable battery, an electrical connection from one side of the generator to one side of the battery and to one side of the electric light, a first diode, a first side of which is an anode and a second side of which is a cathode, one side of said diode being connected to the other side of said alternating current generator anD the other side of said diode being connected to the other side of said rechargeable battery, whereby the battery is charged on one half of the cycle of said alternating current generator when the voltage of the alternating current generator exceeds the voltage of the rechargeable battery, a second diode, a first side of which is an anode and a second side of which is a cathode, one side of said second diode being connected to said one side of said first diode, said last-named connection being between an anode of one of the diodes and a cathode of the other, and switching means connected to the other side of said electric light, to the said other side of said first diode, and to the other side of said second diode for selecting between two circuits, one of which places the electric light, the generator and the second diode in series to thus energize said electric light during the other half cycle of said alternating current generator, and the other of which circuits places the rechargeable battery and the electric light in parallel.
Claim 3
Dependent Claim
125 words
A bicycle lighting system as defined in claim 1 in which said switching means comprises a single pole double throw switch comprising an output line connecting said single pole to said other side of said electric light, the switch having two inputs either of which may be selectively connected to said single pole, one of said inputs being connected to said other side of said second diode and the other of said inputs being connected to said other side of said rechargeable battery, whereby when the single pole is connected to said one input of said switch the battery is charged only during one half of the alternating current cycle and the light is energized only during the other half of said alternating current cycle.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |