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Class Information
Number: 72/88
Name: Metal deforming > By use of tool acting during relative rotation between tool and work about internal center (e.g., gyrating or rotating tool) > During rotation of work > Caused by tools (e.g., "platens") relatively moving parallel to their surface
Description: Subject matter wherein the work lies between two tools, each of which tools has a generally planar work-engaging surface, and wherein the work is rotated and deformed by moving one of the tools relative to the other so that the work-engaging surface of each tool moves relative to the other tool in a plane that is substantially equidistant from the generally planar work-engaging surface of the other tool during operation.

Sub-classes under this class:

Class Number Class Name Patents
72/89 Including rotating tool (e.g., "disk-platen") 6
72/90 Including stationary tool 29

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8635894 Hollow bolt comprising a longitudinal bore Jan. 28, 2014
8453484 Manufacture of a shaft/hub connection Jun. 4, 2013
8312750 Method for the production of a rotationally symmetrical part, and part produced according to said method Nov. 20, 2012
8033153 Method and apparatus for manufacturing a battery terminal with undercut rings Oct. 11, 2011
7908897 Spline rolling tool, and process of manufacturing spline rolling tool Mar. 22, 2011
7866197 Rolling-circle machine Jan. 11, 2011
7628049 Method and apparatus for manufacturing a battery terminal with undercut rings Dec. 8, 2009
7392680 Rolling die and method for forming thread or worm and spline having small number of teeth by rolling simultaneously Jul. 1, 2008
7353679 Coldforming machine Apr. 8, 2008
7278286 Rolling die and a method of making a rod with a ball portion Oct. 9, 2007
7231794 Method for manufacturing a worm shaft Jun. 19, 2007
7156600 Die for, method of making, and fastener with lobed primary thread lead and interposed dual auxiliary thread lead with improved substrate entry end portion Jan. 2, 2007
7051565 Cold forming machine May. 30, 2006
6957557 Threaded fastener with dual reinforcing leads for facilitating manufacture of the fastener, thread rolling die for forming the threaded fastener, and method of manufacturing the threaded faste Oct. 25, 2005
6712708 Self-tapping screw, blank and method for joining thin workpieces and production method for the same Mar. 30, 2004
6666059 Method and device for rotating and machining bar material Dec. 23, 2003
6634078 Method of manufacturing a splined member for use in a slip joint Oct. 21, 2003
6598453 Tooth rolling flat dies and method for forming teeth Jul. 29, 2003
6516650 Rolling dies for producing dog point threads Feb. 11, 2003
6324887 Thread rolling dies and process for forming same Dec. 4, 2001
6314778 Rolling die and surface processing method for rolling die Nov. 13, 2001
6301945 Rack slide assembly and machine for rolling splines in a round workpiece Oct. 16, 2001
6250123 Method, apparatus and rack for making power transmission member Jun. 26, 2001
6149363 Lightweight threaded fastener and thread rolling die Nov. 21, 2000
6135892 Method of forming a short point anti-cross threading member Oct. 24, 2000
6108909 Groove forming processes for shaft outer diameter Aug. 29, 2000
6047581 Drive system for vertical rack spline-forming machine Apr. 11, 2000
5987953 Power transmission formation rolling machine having movable headstock and tailstock spindle supports Nov. 23, 1999
5983690 Machine having antifriction support for forming racks for rolling power transmission formations Nov. 16, 1999
5970768 Machine base for supporting vertical movement of forming racks for rolling power transmission formations Oct. 26, 1999
5957777 Method of manufacturing fasteners Sep. 28, 1999
5950471 Vertical rack spline forming machine Sep. 14, 1999
5943904 Thread-rolling die Aug. 31, 1999
5788441 Lightweight, compact, threaded fastener and thread rolling die for making same Aug. 4, 1998
5743123 Method of thread rolling a screw shaft Apr. 28, 1998
5592843 Spline rack Jan. 14, 1997
5555757 Flat die thread roller Sep. 17, 1996
5509287 Method of conditioning the surface of a spline forming rack Apr. 23, 1996
5507169 Throw away thread rolling die Apr. 16, 1996
5483810 Die set for forming a fastener with thread lock Jan. 16, 1996
5379622 Method of forming helical splines with stoppers on a rotary shaft, and rolling tools for practicing the method Jan. 10, 1995
5243843 Thread forming method and apparatus Sep. 14, 1993
5182937 Seam-free thread rolling dies Feb. 2, 1993
5117667 Threaded structural fastener with thread lock and method for making it Jun. 2, 1992
5105586 Abrading tool and method of manufacture Apr. 21, 1992
5076086 Thread rolling apparatus Dec. 31, 1991
5060497 Method of forming asymmetrical articles by rolling Oct. 29, 1991
4996860 Method and apparatus for manufacturing anchor bolts for concrete Mar. 5, 1991
4966024 Method of forming a screw threaded fastener Oct. 30, 1990
4956986 Roll forming notches in a thin-wall power transmission member Sep. 18, 1990

1 2 3

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