Slow diffusers > Gravity flow of liquid from supply holder > Barometric flow to secondary holder > Drip discharge from secondary holder > To porous distributor to atmosphere > Patents

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Class Information
Number: 239/41
Name: Fluid sprinkling, spraying, and diffusing > Slow diffusers > Gravity flow of liquid from supply holder > Barometric flow to secondary holder > Drip discharge from secondary holder > To porous distributor to atmosphere
Description: Apparatus provided with a foraminous or liquid permeable element exposed to the ambient atmosphere and in the path of the drop-by-drop discharge from the auxiliary reservoir.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
7244471	Method for surface treatment of metal pipes	Jul. 17, 2007
7111794	Static air freshener	Sep. 26, 2006
7051949	Volatilizing apparatus	May. 30, 2006
6994270	Semi-enclosed gel delivery device	Feb. 7, 2006
6938832	Scent strip	Sep. 6, 2005
6726119	Upright fire protection nozzle	Apr. 27, 2004
5782578	Hydraulic timer mechanism for water irrigation	Jul. 21, 1998
5449117	Apparatus and method for controllably dispensing drops of liquid	Sep. 12, 1995