There is provided a shaft member such as a bearing, washers, and shaft, having at least one surface defining a plurality of radial grooves for providing radial fluid communication without generating significant thrust loading between the shaft member and an adjacent surface. The grooves can be formed by pressing a die against the surface(s) of the shaft member.

 
Web www.patentalert.com

< Pump for liquid chromatography

< Underground storage tank metering system in a service station environment

> Device for the metered delivery of a viscous liquid

> Axially aligned dual piston cylinder air pump with a common head portion

~ 00204