Diffusion device
First Claim
1. A diffusion device, comprising:
- a housing having a battery disposed therein and adapted to receive a replaceable fluid reservoir for holding a fluid, the fluid reservoir including a wick for movement of the fluid to a discharge end thereof;
a piezoelectric element energized by the battery for vibrating a perforated orifice plate disposed adjacent the discharge end of the wick, wherein the piezoelectric element develops vibratory movement to pump the fluid from the discharge end through the perforated discharge plate and into the atmosphere; and
a control circuit and a light emitting diode (“
LED”
) disposed in the housing, wherein the control circuit rapidly switches the LED between on and off states in response to the operation of a switch that alternately connects and disconnects a current source to the LED when the piezoelectric element is energized and a voltage developed by the control circuit is above 3.0 volts such that the battery is prevented from cycling in and out of a low battery condition.
1 Assignment
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Accused Products
Abstract
A diffusion device includes a housing having a battery disposed therein and adapted to receive a replaceable fluid reservoir for holding a fluid, wherein the fluid reservoir includes a wick for movement of the fluid to a discharge end thereof. The diffusion device further includes a piezoelectric element energized by a power source for vibrating a perforated orifice plate disposed adjacent the discharge end of the wick, wherein the piezoelectric element develops vibratory movement to pump the fluid from the discharge end through the perforated discharge plate and into the atmosphere. A control circuit and light emitting diode (“LED”) are disposed in the housing, wherein the control circuit energizes the LED at a particular frequency when the dispenser is active and a voltage developed by the battery is above a threshold voltage.
64 Citations
19 Claims
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1. A diffusion device, comprising:
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a housing having a battery disposed therein and adapted to receive a replaceable fluid reservoir for holding a fluid, the fluid reservoir including a wick for movement of the fluid to a discharge end thereof; a piezoelectric element energized by the battery for vibrating a perforated orifice plate disposed adjacent the discharge end of the wick, wherein the piezoelectric element develops vibratory movement to pump the fluid from the discharge end through the perforated discharge plate and into the atmosphere; and a control circuit and a light emitting diode (“
LED”
) disposed in the housing, wherein the control circuit rapidly switches the LED between on and off states in response to the operation of a switch that alternately connects and disconnects a current source to the LED when the piezoelectric element is energized and a voltage developed by the control circuit is above 3.0 volts such that the battery is prevented from cycling in and out of a low battery condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A diffusion device, comprising:
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a housing adapted to receive a replaceable fluid reservoir for holding a fluid, the fluidreservoir including a wick for movement of the fluid to a discharge end thereof; a piezoelectric element for vibrating a perforated orifice plate disposed adjacent the discharge end of the wick, wherein the piezoelectric element develops vibratory movement to pump the fluid from the discharge end through the perforated discharge plate and into the atmosphere; a control circuit and a light emitting diode (“
TED”
) disposed in the housing, wherein the control circuit rapidly switches the LED between on and off states in response to the operation of a switch that alternately connects and disconnects a constant current source to the LED; andonly one 1.5 volt AA battery coupled to the control circuit and disposed within the housing, wherein the only one battery and the control circuit drive the piezoelectric element and the LED such that the piezoelectric element is periodically operated to dispense fluid from the device for 10 hours a day for at least 45 days, and wherein the control circuit ranidly switches the LED between on and off states at a particular frequency when the piezoelectric element isenergized and a voltage developed by avoltage boost circuit is above 3.0 volts such that the battery is prevented from cycling in and out of a low battery condition. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification