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Class Information
Number: 411/425
Name: Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener > Externally threaded fastener element, e.g., bolt, screw, etc. > Thread or shank structure > Shank structure > Twisted
Description: Subject matter wherein the shank is formed by subjecting it to torsional plastic deformation.

Patents under this class:

Patent Number Title Of Patent Date Issued
7896309 Magnetic alignment tool for foam inserts contained within precast wall panels Mar. 1, 2011
7214021 Helical grooved pin May. 8, 2007
6305479 Wall tie reinforcement and method Oct. 23, 2001
6155352 Wall tie reinforcement and method Dec. 5, 2000
6039125 Wall tie reinforcement and method Mar. 21, 2000
5662683 Open helical organic tissue anchor and method of facilitating healing Sep. 2, 1997
5639195 Helical panel fastener Jun. 17, 1997
5626613 Corkscrew suture anchor and driver May. 6, 1997
5299897 Masonry fastener Apr. 5, 1994
5234291 Roof bolts Aug. 10, 1993
4815909 Wood screw and method for making same Mar. 28, 1989
4307979 Mine roof bolt and end cap Dec. 29, 1981

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