Device with one or more indicators
First Claim
Patent Images
1. A device that includes at least one consumable source that decreases in effectiveness over time, the device comprising:
- a timer, operatively coupled to the consumable source, for maintaining the duration that the at least one consumable source is in use; and
an effectiveness indicator, operatively coupled to the timer, for indicating when the timer has reached a preset duration.
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Abstract
A device that includes at least one consumable source that decreases in effectiveness over time. The device comprises a timer, operatively coupled to the consumable source, for maintaining the duration that the at least one consumable source is in use; and an effectiveness indicator, operatively coupled to the timer, for indicating when the timer has reached a preset duration. In an alternative embodiment, the device may include a sensor for sensing the effectiveness of the at least one consumable source.
18 Citations
17 Claims
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1. A device that includes at least one consumable source that decreases in effectiveness over time, the device comprising:
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a timer, operatively coupled to the consumable source, for maintaining the duration that the at least one consumable source is in use; and
an effectiveness indicator, operatively coupled to the timer, for indicating when the timer has reached a preset duration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A device that includes at least one consumable source that decreases in effectiveness over time, the device comprising:
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a sensor, operatively coupled to the consumable source, for sensing the effectiveness of the at least one consumable source; and
an indicator, operatively coupled to the sensor, for indicating an effectiveness of the at least one consumable source. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification