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Class Information
Number: 72/326
Name: Metal deforming > With cutting > By composite tool (e.g., piercing) > Shear-type
Description: Subject matter wherein said edged element and a coacting element having a generally conforming edge are arranged to engage opposite sides of work and to approach each other, with the edge on one element moving past, and in close and overlapping relationship to, the edge of the coacting element.

Sub-classes under this class:

Class Number Class Name Patents
72/330 Blank detaching 30
72/331 Severing (e.g., subdividing) 31
72/327 With endless cutting edges 84

Patents under this class:
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Patent Number Title Of Patent Date Issued
8683841 Apparatus and method to cut HVAC round and spiral ductwork and all attaching structures Apr. 1, 2014
8613213 Interchangeable spring loaded scrap cutter Dec. 24, 2013
8511128 Ejection of residual parts from plate-type workpieces Aug. 20, 2013
8328072 Method for forming a wave form used to make wound stents Dec. 11, 2012
7788804 Linear compressor and method of producing the same Sep. 7, 2010
7533793 Solder preforms for use in electronic assembly May. 19, 2009
7484397 Punch, apparatus and method for forming opposing holes in a hollow part, and a part formed therefrom Feb. 3, 2009
7370505 Method of forming blind holes in a sheet of material May. 13, 2008
7353584 Deck tool Apr. 8, 2008
7137284 Chain cutter Nov. 21, 2006
7069758 Metal stud punch system and a method of manufacture Jul. 4, 2006
7032429 Pipe shut off tool Apr. 25, 2006
7021110 Apparatus for preparing U-shaped spacers for insulating units Apr. 4, 2006
7013694 Portable, metal bending apparatus Mar. 21, 2006
6880378 Chain cutter Apr. 19, 2005
6840078 Tool for shaping a workpiece Jan. 11, 2005
6761054 Method for making a four-sided electrical contact Jul. 13, 2004
6705147 Method and apparatus for fastening steel framing by crimping Mar. 16, 2004
6640602 Dual notcher Nov. 4, 2003
6604399 Stamping die for cutting and forming sheet material Aug. 12, 2003
6591506 Hand operated end cutting sheet metal shear Jul. 15, 2003
6526798 Method of blanking element for belt for continuously variable transmission Mar. 4, 2003
6523387 Apparatus for making a four-sided electrical contact Feb. 25, 2003
6513237 Method for producing pressin contact Feb. 4, 2003
6502447 Device and method for manufacturing turbulators for use in compact heat exchangers Jan. 7, 2003
6460393 Method for forming bucklings in a plate member, tool and plate Oct. 8, 2002
6453711 Flat turbulator for a tube and method of making same Sep. 24, 2002
6397469 Method of securing workpieces together Jun. 4, 2002
6382009 Method of adjusting height of magnetic head May. 7, 2002
6378349 Tool and use thereof for forming a sheet metal tube end Apr. 30, 2002
6353989 Method of making recesses in metallic workpieces for use in torque transmitting apparatus Mar. 12, 2002
6305209 Workpiece blanking apparatus Oct. 23, 2001
6240764 J-channel siding cutter Jun. 5, 2001
6158265 Method of forming retaining members on a housing Dec. 12, 2000
6109086 Punch and method for forming slugless pierced conical extrusions Aug. 29, 2000
6050123 Device for forming a spout in a container Apr. 18, 2000
5860214 Shearing machine with sickle-shaped blade Jan. 19, 1999
5718142 Metal stitcher Feb. 17, 1998
5709122 Tool Jan. 20, 1998
5682784 Roll forming tool for manufacturing louvered serpentine fins Nov. 4, 1997
5666848 Device for cutting and crimping pipes or tubes Sep. 16, 1997
5619881 Double-scissors cutter Apr. 15, 1997
5458717 Method of shearing thin metal sheet Oct. 17, 1995
5412971 Tool May. 9, 1995
5404741 Method and cutting tool for producing steel fibers Apr. 11, 1995
5392629 Method and apparatus for forming multi-level features in an object Feb. 28, 1995
5377519 Punch and die for forming a protrusion and a pair of slits in sheet material Jan. 3, 1995
5341696 Process and device for producing a peel or tear test specimen on a welded compound sheet Aug. 30, 1994
5318176 Rail, preferably wall rail, method for the production hereof and tool herefor Jun. 7, 1994
5123529 Apparatus for manufacturing metallic card clothing Jun. 23, 1992

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