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Class Information
Number: 285/343
Name: Pipe joints or couplings > Packed > Wedge > Compressed
Description: Subject matter including a pressure means having a flared wedging surface surrounding a stationary wedge whereby the wedge is compressed radially inward.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8608210 Coupling device for tubular members Dec. 17, 2013
8523245 Fitting for tube and pipe with tapered ferrule Sep. 3, 2013
8505985 Coupling device Aug. 13, 2013
8480135 Ferrule with internal recess and cylindrical wall Jul. 9, 2013
8444187 Separation prevention device for pipe joint May. 21, 2013
8308202 Separation prevention device for pipe joint Nov. 13, 2012
8287006 Tube coupling system for a pressurised fluid system Oct. 16, 2012
8272671 Fluid line connector Sep. 25, 2012
8235427 Self restrained ductile iron fitting Aug. 7, 2012
8052177 Pipe coupling Nov. 8, 2011
8007013 Fitting with adapted engaging surfaces Aug. 30, 2011
7988206 Flareless-type pipe fitting, refrigerating device, and water-heating device Aug. 2, 2011
7971909 Pipe joint, refrigeration device, heat pump hot water supply device, closing valve, water supply piping, method of connecting piping, and in-the field piping method Jul. 5, 2011
7954856 Flareless pipe coupling structure, flareless pipe coupling method, and on-site pipe coupling method Jun. 7, 2011
7900976 Coupling device for tubular members Mar. 8, 2011
7891711 Revolving compensator of high pressure for pipe Feb. 22, 2011
7837239 Pipe coupling with built-in grip Nov. 23, 2010
7837238 Pipe grip ring Nov. 23, 2010
7815226 Fitting for metal pipe and tubing Oct. 19, 2010
7815225 Self restrained ductile iron fitting Oct. 19, 2010
7699358 Ferrule with relief to reduce galling Apr. 20, 2010
7681926 Method and apparatus for connecting small diameter tubing Mar. 23, 2010
7661729 Apparatus for connecting plastic-lined metallic pipes Feb. 16, 2010
7641240 Pressure joint for pipes Jan. 5, 2010
7618071 Integral restraint system and method of manufacture for plastic pipe Nov. 17, 2009
7614668 Ferrule with plural inner diameters Nov. 10, 2009
7596847 Connectable rod system for driving downhole pumps for oil field installations Oct. 6, 2009
7597117 Compression plug system for tubes and pipes Oct. 6, 2009
7571940 Pipe coupling with built-in grip Aug. 11, 2009
7484775 Pipe joint restraint Feb. 3, 2009
7472928 Connector Jan. 6, 2009
7419192 Braze-free connector utilizing a sealant coated ferrule Sep. 2, 2008
7416225 Fitting for metal pipe and tubing Aug. 26, 2008
7367595 Ferrule having convex interior wall portion May. 6, 2008
7341288 Restrained sleeve pipe coupling Mar. 11, 2008
7338088 Connector Mar. 4, 2008
7316777 Compression fitting nut with interlocked ferrule Jan. 8, 2008
7240929 Ferrule with plural inner diameters Jul. 10, 2007
7207606 Mechanical pipe joint, gasket, and method for restraining pipe spigots in mechanical pipe joint bell sockets Apr. 24, 2007
7104573 Energized restraining gasket for mechanical joints of pipes Sep. 12, 2006
7093864 Connecting element for pipes and method for welding a connecting element onto the end of a pipe Aug. 22, 2006
7090258 Sealing socket and method for arranging a sealing socket to a tube Aug. 15, 2006
6902210 Universal connector tubing Jun. 7, 2005
6851729 Tube fitting for medium pressure applications Feb. 8, 2005
6843514 Pipe coupling device Jan. 18, 2005
6832791 Connection means for interconnecting two duct elements Dec. 21, 2004
6712090 Hydraulic valve Mar. 30, 2004
6702336 Coupling device for polymeric pipes Mar. 9, 2004
6641178 Jointing system for pipes Nov. 4, 2003
6575501 Tube sealing bushing Jun. 10, 2003

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