Portable lighting devices
US-10085322-B2 · Sep 25, 2018 · US
Portable lighting devices
US10285242B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10285242-B2 |
| Application number | US-201816128398-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 11, 2018 |
| Priority date | Aug 8, 2008 |
| Publication date | May 7, 2019 |
| Grant date | May 7, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A method for increasing battery life in a lighting device powered by a battery source in which an electronic circuit is caused to provide a declining power supply to a light emitting diode (“LED”) as a power profile of the battery source declines.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for increasing battery life in a lighting device powered by a battery source through an electronic circuit, comprising: causing the electronic circuit to provide a declining power supply to a light emitting diode (“LED”) as a power profile of the battery source declines. 2. The method of claim 1 wherein electronics use a power profile for the battery source and a measured battery voltage of the battery source to determine when a duty cycle of the electronic circuit is reduced. 3. The method of claim 2 wherein the duty cycle is reduced towards an end of life of the battery source. 4. The method of claim 3 wherein the duty cycle gradually declines when the end of life of the battery source is reached. 5. The method of claim 4 wherein the end of life of the battery source is a low voltage for the measured battery voltage. 6. The method of claim 1 wherein electronics use a power profile for the battery source and a measured battery voltage of the battery source to determine when a duty cycle of the electronic switch is reduced to extend battery life of the battery source. 7. The method of claim 6 wherein the duty cycle is reduced towards an end of life of the battery source. 8. The method of claim 7 wherein the duty cycle gradually declines when the end of life of the battery source is reached. 9. The method of claim 8 wherein the end of life of the battery source is a low voltage for the measured battery voltage. 10. A lighting apparatus with a light emitting diode (LED) light source powered by a battery source through an electrical circuit, comprising: electronics for causing the electronic circuit to provide a declining power supply to the LED light source as a power profile of the battery source declines. 11. The lighting apparatus of claim 10 wherein the electronics use a power profile for the battery source and a measured battery voltage of the battery source to determine when a duty cycle of the electronic circuit is reduced to extend battery life of the battery source. 12. The lighting apparatus of claim 11 wherein the duty cycle is reduced towards an end of life of the battery source. 13. The lighting apparatus of claim 12 wherein the duty cycle gradually declines when the end of life of the battery source is reached. 14. The lighting apparatus of claim 13 wherein the end of life of the battery source is a low voltage for the measured battery voltage. 15. The lighting apparatus of claim 10 wherein the electronics use a power profile for the battery source and a measured battery voltage of the battery source to determine when a duty cycle of the electronic circuit is reduced to extend battery life of the battery source. 16. The lighting apparatus of claim 15 wherein the duty cycle is reduced towards an end of life of the battery source. 17. The lighting apparatus of claim 16 wherein the duty cycle gradually declines when the end of life of the battery source is reached. 18. The lighting apparatus of claim 17 wherein the end of life of the battery source is a low voltage for the measured battery voltage.
Assignees
Inventors
Classifications
Progressively advancing of work assembly station or assembled portion of work · CPC title
for batteries (charge condition monitoring in G01R31/36) · CPC title
the substrate being distinct from the light source holder · CPC title
the casing being inside the housing of the lighting device · CPC title
by timing means · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10285242B2 cover?
- A method for increasing battery life in a lighting device powered by a battery source in which an electronic circuit is caused to provide a declining power supply to a light emitting diode (“LED”) as a power profile of the battery source declines.
- Who is the assignee on this patent?
- Mag Instr Inc
- What technology area does this patent fall under?
- Primary CPC classification H05B37/0209. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 07 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).