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Class Information
Number: 138/94
Name: Pipes and tubular conduits > With closures and plugs > Laterally insertable
Description: Closures and plugs for the inside opening of a pipe which are insertable through a lateral opening in the pipe.










Sub-classes under this class:

Class Number Class Name Patents
138/94.3 Line blinds 77


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8656939 Apparatus, system and methods for sealing and severing a subsea pipeline Feb. 25, 2014
8646487 Corrosion coupon holder Feb. 11, 2014
8646314 Externally engaging test barrier Feb. 11, 2014
8647731 Purge dam for retaining purge gas around a weld zone Feb. 11, 2014
8640736 Apparatus for pressure testing a plumbing system Feb. 4, 2014
8636035 Dual inflatable plug assembly Jan. 28, 2014
8561646 System and methods for multiple service line plug deployment Oct. 22, 2013
8511328 Plugged hot tap tee Aug. 20, 2013
8485227 Apparatus for providing conditioned fluid flows Jul. 16, 2013
8307856 Double block and bleed plug Nov. 13, 2012
8215340 Orifice plate carrier Jul. 10, 2012
8176942 Closing device for a vacuum user system of an aircraft May. 15, 2012
8141591 Plug assembly with moveable mounting members Mar. 27, 2012
8113241 Resilient test valve member Feb. 14, 2012
8104517 Resilient plug apparatus and method of use Jan. 31, 2012
8066032 Apparatus for instantaneously terminating movement of flow material through a conduit Nov. 29, 2011
8047219 Block and bleed plugging tool employing seals on a pipeline exterior Nov. 1, 2011
8042576 Mechanical clean-out test plug Oct. 25, 2011
8025080 Orifice plate alignment device Sep. 27, 2011
8001988 Verifiable closing and locking system of a cylindrical passageway Aug. 23, 2011
7886773 Low pressure directional stop bypass device Feb. 15, 2011
7870873 Dual chamber orifice fitting isolation valve Jan. 18, 2011
7866347 Isolation tool Jan. 11, 2011
7849882 Double plug head for plugging pipe Dec. 14, 2010
7841365 Apparatus for controlling flow through a conduit Nov. 30, 2010
7841364 Double block and bleed plug Nov. 30, 2010
7806145 Housing for a flow conditioner Oct. 5, 2010
7766047 Telescoping double blocking pipe plug Aug. 3, 2010
7740028 Composite plug system and process for high pressure pipeline leaks Jun. 22, 2010
7717136 Pipeline closing apparatus May. 18, 2010
7695022 Fluid coupling cap Apr. 13, 2010
7665486 Tear out test plug for plumbing installations Feb. 23, 2010
7654287 Dual slide gate valve and method for using same Feb. 2, 2010
7644735 Pipe insert Jan. 12, 2010
7632556 Self-adhesive purge dam for retaining purge gas around a weld zone Dec. 15, 2009
7628176 Pipeline stop Dec. 8, 2009
7571743 Gravity flow isolation device Aug. 11, 2009
7546847 Locking plug for closing the sidewall of a pipe Jun. 16, 2009
7497772 Quick change restrictor plate Mar. 3, 2009
7469709 Three-wedge double block isolation chamber Dec. 30, 2008
7353839 High temperature completion plug Apr. 8, 2008
7325442 Leak testing device with a permanent coupling Feb. 5, 2008
7308902 Subsea valve assembly with replaceable fixed orifice insert Dec. 18, 2007
7281543 Apparatus, systems and methods for plugging a high temperature pipe Oct. 16, 2007
7270139 Cam-assisted, wedge actuated, metal-to-metal seal, block and bleed plugging tool Sep. 18, 2007
7225827 Insertion valve and installation method Jun. 5, 2007
7112358 Self-adhesive purge dam for retaining purge gas around a weld zone Sep. 26, 2006
6997041 Dual slide gate valve and method for using same Feb. 14, 2006
6981821 Subsea pipeline insertion shoe Jan. 3, 2006
6978765 Fuel system with press fit plug assembly Dec. 27, 2005

1 2 3 4 5










 
 
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