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Class Information
Number: 228/50
Name: Metal fusion bonding > Seam backup means
Description: Device comprising a tangible instrumentality having a surface portion designed and intended to engage directly the surface area of the work or material being fused, on the side of the work opposite to the side which receives energy for fusion-bonding, for the purpose of reacting against such energy.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8550326 Expandable mandrel for use in friction stir welding Oct. 8, 2013
8191754 Magnetic plug weld tool Jun. 5, 2012
8056797 Expandable mandrel for use in friction stir welding Nov. 15, 2011
7651018 Expandable mandrel for use in friction stir welding Jan. 26, 2010
7631797 Magnetic plug weld tool Dec. 15, 2009
7556188 Clamping device for weld seam-backing member Jul. 7, 2009
7410087 Welding backup systems for heat-sink or purge purposes Aug. 12, 2008
7028881 Method for providing removable weld backing Apr. 18, 2006
6866179 Detachable welding tab assembly Mar. 15, 2005
6719186 Method and apparatus for end-to-end welding of lined pipe Apr. 13, 2004
6706992 Welding apparatus and method for welding overlapping coated sheets Mar. 16, 2004
6398100 Back-up clamp Jun. 4, 2002
6161750 Weld tab Dec. 19, 2000
6059320 Compressible pipe spacer used in welding May. 9, 2000
5954261 Welding mold and method Sep. 21, 1999
5944247 Protective device for seam being welded Aug. 31, 1999
5915737 Compressible pipe spacer used in welding Jun. 29, 1999
5769307 Iron-type golf club head and production method therefor Jun. 23, 1998
5769306 Weld root closure method for friction stir welds Jun. 23, 1998
5726408 Weld backing ring for nozzle repairs Mar. 10, 1998
5624067 Method and apparatus for weld joining pipe sections Apr. 29, 1997
5597108 Plug style pipe line-up clamp with copper back-up shoes Jan. 28, 1997
5590829 Movable backing system Jan. 7, 1997
5566984 Cylindrical corrosion barrier for pipe connections Oct. 22, 1996
5536050 Connection for fabricating mandrel bar from used segments Jul. 16, 1996
5511721 Braze blocking insert for liquid phase brazing operations Apr. 30, 1996
5472134 Weld joint container Dec. 5, 1995
5455079 Surface hardening of titanium alloys with melting depth controlled by heat sink Oct. 3, 1995
5450996 Seamer with improved back-up assembly Sep. 19, 1995
5449107 Weld backing Sep. 12, 1995
5395142 Welding joint and backing sleeve therefore Mar. 7, 1995
5356067 Internal line up clamp Oct. 18, 1994
5323950 Flexible, adjustable welding backup mandrel Jun. 28, 1994
5158225 Backing tool for welding Oct. 27, 1992
5137202 Pipe joint lead stop and method Aug. 11, 1992
5110031 Weld suporting ring for pipes May. 5, 1992
5104030 Inline splicing of brittle superconductors Apr. 14, 1992
5082166 Connector beam joining method Jan. 21, 1992
5024371 Welding process Jun. 18, 1991
4842186 Method and apparatus for building a workpiece by deposit welding Jun. 27, 1989
4775092 Method and apparatus for building a workpiece by deposit welding Oct. 4, 1988
4762265 Plug for kinetic bonding procedure Aug. 9, 1988
4759981 Welding backup tape assembly Jul. 26, 1988
4741469 Clamping ring attachable with split clamping means May. 3, 1988
4721241 Welding apparatus assembled together with grinding device Jan. 26, 1988
4691092 Method for welding two parts together employing a concentrated energy beam and protective member Sep. 1, 1987
4682724 Welding apparatus Jul. 28, 1987
4671447 Welding ring arrangement Jun. 9, 1987
4648544 Internal chuck for butt welding two tubes Mar. 10, 1987
4611830 Partially consumable spacer chill rings and their use in welding pipe joints Sep. 16, 1986

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