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Class Information
Number: 137/242
Name: Fluid handling > With cleaner, lubrication added to fluid or liquid sealing at valve interface > Cleaning or steam sterilizing > Mechanical cleaning
Description: Systems in which the undesired material is removed from the device or system or parts thereof by the physical interaction of two or more parts of the device or system, not including relations or operations which are part of or necessary for flow handling.

Sub-classes under this class:

Class Number Class Name Patents
137/244 Cleaning member reciprocates in passage 107
137/243 Valve grinding motion of valve on seat 17

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8544134 Tight space, inside boat thruhole fitting clearing Oct. 1, 2013
8539673 Method and device for machining a sealing seat of a shut-off valve Sep. 24, 2013
8454126 Print head with electromagnetic valve assembly Jun. 4, 2013
8360250 Self-cleaning valve Jan. 29, 2013
8327870 Slide valve with slider plate sealing mechanism Dec. 11, 2012
8297303 Self cleaning valve assembly Oct. 30, 2012
8296892 Inside boat thruhole fitting clearing Oct. 30, 2012
8251086 Rotary gate valve with secondary seal Aug. 28, 2012
8074672 Inertially activated ejection valve Dec. 13, 2011
8074671 Self-cleaning valves for use in vacuum cleaners and other self-cleaning valves Dec. 13, 2011
7950410 Gate valve with replaceable inserts and method of refurbishing same May. 31, 2011
7891372 Contamination and flow control Feb. 22, 2011
7694934 Diaphragm valve for irrigation systems Apr. 13, 2010
7506660 Gate valve with replaceable inserts and method of refurbishing same Mar. 24, 2009
7503316 Anti-coking bushing assembly for an exhaust recirculation control valve Mar. 17, 2009
7481239 Gate valve with replaceable inserts Jan. 27, 2009
7445018 Recycling furnace flow management sliding gate valve for low melting temperature metals Nov. 4, 2008
7165754 Electromagnetic valve Jan. 23, 2007
7107634 Method and apparatus for cleaning a conduit Sep. 19, 2006
7104523 Valve having contamination counter-measures Sep. 12, 2006
7104522 Coking-resistant shaft/bushing mechanism for an exhaust gas recirculation valve Sep. 12, 2006
7044153 Varnishing installation May. 16, 2006
7028701 Particle build-up prevention in flowing systems Apr. 18, 2006
6945268 Particle build-up prevention in flowing systems Sep. 20, 2005
6908070 Cylinder valve insert Jun. 21, 2005
6854478 Fluid-controlled valve for pipeline pig Feb. 15, 2005
6789780 Unit and method for discharging loose material from a dispensing device Sep. 14, 2004
6510867 Pressure relief valve Jan. 28, 2003
6488263 Valve stem and method of manufacture; improved stem packing Dec. 3, 2002
6453933 Container valve Sep. 24, 2002
6453934 Shaft brush for preventing coking in a gas management valve Sep. 24, 2002
6418960 Ultrasonic enhancement for solvent purge of a liquid delivery system Jul. 16, 2002
6385799 Plumbing sink trap May. 14, 2002
6374847 Seal cleansing routine Apr. 23, 2002
6305392 Method and apparatus for removing processing liquid from a processing liquid delivery line Oct. 23, 2001
6305404 Device for regulating the contents of a container Oct. 23, 2001
6250604 Valve stem and method of manufacturing, improved stem packing Jun. 26, 2001
6247679 Valve stem and method of manufacture; improved stem packing Jun. 19, 2001
6240575 Evacuation system provided with a shut-off valve, and process for maintaining in operating conditions a shut-off valve in a vaccum evacuation system Jun. 5, 2001
6240946 Switch valve Jun. 5, 2001
6216724 Safety valve Apr. 17, 2001
6217660 Method for cleaning a throttle valve and apparatus Apr. 17, 2001
6199576 Bi-directional cleanout with backflow preventer Mar. 13, 2001
6139644 Method and equipment for launching pigs into undersea pipes Oct. 31, 2000
6021801 Valves Feb. 8, 2000
6006778 Device for sensing the amount of oil in oil pans Dec. 28, 1999
5842816 Pig delivery and transport system for subsea wells Dec. 1, 1998
5740829 Method of sealing an outlet opening Apr. 21, 1998
5732727 Leakfree switching process for a double-seat valve and a sealing system for carrying out the process Mar. 31, 1998
5622205 Check valve having reserved mechanical closure Apr. 22, 1997

1 2 3

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