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US 2011/0210669 A1Published application
End-of life circuitry
AssigneeSwitch Bulb Company, Inc.
InventorsRonald J. Lenk, Carol Lenk, Ethan Thorman
Life of this patent
Estimating the term…
Abstract
An LED light bulb which turns itself permanently off when it reaches the end of its useful life, and more particularly, to a scheme which slightly varies the end-of-life condition from unit to unit.
Claims8
An end-of-life detecting LED light bulb comprising:
- an LED light bulb;
- and
- a microcontroller having a circuit for detecting operational time of the bulb;
- and
- wherein the microcontroller turns the bulb off upon reaching a preset amount of operational time.
2 more elements
Dependencies are inferred from the claim text.