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Class Information
Number: 451/222
Name: Abrading > Machine > Rotary tool > Rotary cylinder > Reciprocating work holder > Rectilinear > Work rotating > Thread abrader
Description: Abrading machine which grinds a helical groove in a workpiece.










Sub-classes under this class:

Class Number Class Name Patents
451/223 Including work support engaging work at opposite, axial ends; e.g., opposed "centers" 3


Patents under this class:

Patent Number Title Of Patent Date Issued
6648341 Chuck with helical jaw bite Nov. 18, 2003
6126521 Process and apparatus for manufacturing endodontic instruments Oct. 3, 2000
6120364 Grinding fixture and assembly Sep. 19, 2000
5210980 Diamond grinding machine for threading and forming hard materials such as ceramics, carbide and glass objects May. 18, 1993
5188491 Method for cutting the flanks of an infeed worm and worm milling machine Feb. 23, 1993
5065549 Method and apparatus for manufacturing K-files and reamers Nov. 19, 1991
4999952 Method and apparatus for manufacturing K-files and reamers Mar. 19, 1991
4953325 Thread grinding attachment Sep. 4, 1990
4930265 Thread grinding method and machine Jun. 5, 1990
4631870 CNC grinding machine Dec. 30, 1986
4548000 Method for producing threaded sections of threading tools Oct. 22, 1985
4484931 Thread grinder Nov. 27, 1984
4408418 Method of forming through-feed cylindrical thread rolling dies Oct. 11, 1983
4393624 Thread grinder Jul. 19, 1983
4358911 Machine for relief grinding tap threads Nov. 16, 1982
4339894 Convoluted shirring wheel Jul. 20, 1982
4142330 Thread grinding machine Mar. 6, 1979
4052823 Tap transport device Oct. 11, 1977











 
 
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