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Class 137/326 - Foot valve extraction from top of enclosure


Subclass of Class 137 - Fluid handling
Definition: Devices comprising a container having an access opening
No. of patents: 3
Last issue date: 07/11/2006


NumberTitleIssue Date
7073530Storage tank de-inventorying
A method for emptying a liquid storage tank that has a floating roof which becomes stationery a finite distance above the tank bottom, wherein, after the roof becomes stationery, liquid is continued to be withdrawn from inside the tank while vapor is removed from wi...
07/11/2006
4512360Fabricated ball valve
A fabricated ball valve is positioned between the inlet and the outlet of a valve housing and includes a first tubular member having sealing faces on each end for seating on valve seats and providing flow therethrough when the first tubular member is alig...
04/23/1985
4333552Hydraulic pressure relief valve
A pressure relief valve to control the opening of a port between two pressure vessels at a predetermined time to eliminate differential pressure between the vessels. More particularly, the lock-up clutch assembly in a torque converter is actuated due to a...
06/08/1982
 
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