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Class Information
Number: 137/246.23
Name: Fluid handling > With cleaner, lubrication added to fluid or liquid sealing at valve interface > Liquid supplied at valve interface > Gravity or capillary feed
Description: Valves wherein the lubricant flows by gravity or by capillarity.

Patents under this class:

Patent Number Title Of Patent Date Issued
7704728 Microfluidic gravity pump with constant flow rate Apr. 27, 2010
7007711 Dispersion nozzle with variable throughput Mar. 7, 2006
5901737 Rotary valve having a fluid bearing May. 11, 1999
5370506 Piston type compressor with a rotary suction valve Dec. 6, 1994
4273156 Shutoff device Jun. 16, 1981
4197924 Ball valve lubricating apparatus Apr. 15, 1980
3977496 Air tool lubricator Aug. 31, 1976

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