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Class Information
Number: 493/459
Name: Manufacturing container or tube from paper; or other manufacturing from a sheet or web > Bending > Pulling over an edge (e.g., curling, etc.)
Description: Method or apparatus comprising the application of tensile forces to the workpiece and drawing that workpiece over a projecting member to put greater forces on the surface of the workpiece facing away from the projecting member than on the surface of the workpiece facing toward the projecting member to stress the workpiece beyond its elastic limit thereof.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8388508 Crumpling mechanism for creating dunnage Mar. 5, 2013
8006390 Media cutting and ribbon curling device Aug. 30, 2011
7569011 Image forming apparatus, post-processing apparatus, image forming method, post-processing method, computer readable medium for forming an image, and computer readable medium for the post-proce Aug. 4, 2009
7503887 Method and apparatus for making curled decorative grass Mar. 17, 2009
6939285 Ribbon curling and shredding device Sep. 6, 2005
6789821 Method and apparatus for folding an airbag Sep. 14, 2004
6716317 Tension decurler for web material Apr. 6, 2004
6685615 Corrugated decorative grass formed of paper and polymeric film and method for producing same Feb. 3, 2004
6669620 Method and apparatus for making curled decorative grass Dec. 30, 2003
6666809 Paper decurler for uneven curl profile Dec. 23, 2003
6656104 Method and apparatus for winding spooled materials Dec. 2, 2003
6645133 Apparatus for transporting unwound webs of wrapping material for smokers' products Nov. 11, 2003
6638202 Bag turning device Oct. 28, 2003
6610000 Method of folding air bag Aug. 26, 2003
6572521 Ribbon curling machine and process Jun. 3, 2003
6468196 Synthetic decorative grass simulating Spanish moss and method for making same Oct. 22, 2002
6402675 System for producing corrugated decorative grass Jun. 11, 2002
6331155 Ribbon curling machine and process Dec. 18, 2001
6302678 Setting device for bending layer material more particularly paper Oct. 16, 2001
6283907 Method and associated apparatus for imparting a helical curl to ribbon material for making a decorative element Sep. 4, 2001
6261216 Ribbon curling and shredding device Jul. 17, 2001
6246860 Sheet decurling apparatus Jun. 12, 2001
6228015 Ribbon curling and shredding device May. 8, 2001
6064853 Apparatus for curling materials May. 16, 2000
6007471 Flattening device in a paper processing machine Dec. 28, 1999
5997460 Inline delivery vehicle for a web offset printing press Dec. 7, 1999
5978645 Heat roller fixing device having curl correction mechanism Nov. 2, 1999
5947467 Selectively adjustable decurler Sep. 7, 1999
5928124 Method and apparatus for the continuous feed of a strip of material to a machine Jul. 27, 1999
5916081 Ribbon curling and shredding device Jun. 29, 1999
5871434 Device for stiffening flat workpieces of paper or the like Feb. 16, 1999
5836862 Folded and unfolded paper towel dispensing apparatus Nov. 17, 1998
5727367 Packing method and apparatus Mar. 17, 1998
5711752 Ribbon curling and shredding method Jan. 27, 1998
5658228 Tamper evident container and related apparatus Aug. 19, 1997
5637070 Curl correcting device Jun. 10, 1997
5518492 Ribbon curling and shredding device May. 21, 1996
5490827 Tamper evident container and related apparatus Feb. 13, 1996
5407417 Ribbon curling device Apr. 18, 1995
5383837 Method and apparatus for making improved dunnage Jan. 24, 1995
5346457 Device for eliminating curl of recording paper for use in image forming apparatus Sep. 13, 1994
5316539 Self-adjusting paper recurler May. 31, 1994
5300012 Uncurling device Apr. 5, 1994
5269743 Method of imparting increased foldability to fold lines in paperboard material for paper containers Dec. 14, 1993
5257492 Dunnage, method and apparatus for making, and package using same Nov. 2, 1993
5230691 Correction mechanism for bent recording sheet Jul. 27, 1993
5183454 Paper curl correction apparatus Feb. 2, 1993
5154688 Decurling bar cover Oct. 13, 1992
5141484 Sheet curls reformer Aug. 25, 1992
5123895 Passive, intelligent, sheet decurling system Jun. 23, 1992

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