Patent ID: 7584907
Filing Date: 2009-09-08
Classification: B05B,B65D

Abstract:
1. A precision release aerosol dispenser for providing a controlled release of a dispensing material from a pressurized source of material, the precision release aerosol dispenser comprising: dispensing means for dispensing into the environment the material from the source of material; a microchip coupled to the dispensing means for controlling the release rate of the material to be dispensed; and means for initiating the dispensing means; wherein the microchip comprises: a first glass wafer having a channel therein to allow passage of the material to be dispensed; a filter wafer disposed on the first glass layer, said filter wafer comprising a plurality of pores extending therethrough, said pores being sized to prevent particles above a selected size from passing through the filter wafer; a second glass wafer disposed on the filter wafer, said second glass wafer having a channel in passage alignment with the plurality of pores of the filter wafer; and an orifice wafer disposed on the second glass wafer, said orifice wafer having a bottom surface and a top surface and a channel therethrough, said channel having an entrance at the bottom surface of the orifice wafer and an exit at the top surface of the orifice wafer, said channel being in passage alignment with the channel of the second glass wafer; whereby the material to be dispensed is provided a passageway through the channel in the first glass wafer, through the plurality of pores of the filter wafer, through the channel in the second glass water and out the exit at the top surface of the orifice wafer.