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Class Information
Number: 137/246.15
Name: Fluid handling > With cleaner, lubrication added to fluid or liquid sealing at valve interface > Liquid supplied at valve interface > Screw feed
Description: Valves having a screw means (e.g., screw fed plunger) for feeding the fluid.

Sub-classes under this class:

Class Number Class Name Patents
137/246.19 Jacking 1
137/246.2 Seating 0
137/246.16 With check valve 5

Patents under this class:

Patent Number Title Of Patent Date Issued
7828807 Implantation of a deformable prosthesic device Nov. 9, 2010
5311900 Leak resistant plug valve May. 17, 1994
5232009 Leak resistant plug valve Aug. 3, 1993
4572231 Rotary plug valve Feb. 25, 1986

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