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Class Information
Number: 411/419
Name: Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener > Externally threaded fastener element, e.g., bolt, screw, etc. > Thread or shank structure > Circumferentially interrupted thread > By longitudinal slot > Shank bifurcated by slot extending entirely therethrough
Description: Subject matter wherein the groove passes transversely through and divides a shank of the fastening means into laterally spaced sections.

Patents under this class:

Patent Number Title Of Patent Date Issued
8430616 Press-set threaded screws and 2 stroke air tool for installation Apr. 30, 2013
7954179 Water closet bolt Jun. 7, 2011
7507063 Snap ring with recessed interior contour Mar. 24, 2009
7478798 Connection system between electrically welded panels and supporting poles particularly for enclosures Jan. 20, 2009
7168486 Apparatus comprising expandable bistable tubulars and methods for their use in wellbores Jan. 30, 2007
6581896 Baluster clamp Jun. 24, 2003
6517543 Bone connector system with anti-rotational feature Feb. 11, 2003
6354779 Self-drilling anchor bolt Mar. 12, 2002
6280133 Screw including a moldable mass to secure the screw against unintended loosening Aug. 28, 2001
6220805 Slotted screw and method, and apparatus for forming a slot in a semi-product of a screw prior to thread formation Apr. 24, 2001
6139236 Board anchor Oct. 31, 2000
5980149 Sampling arm coupler Nov. 9, 1999
5755543 Machine screw May. 26, 1998
5692864 Self-threading anchor with spreadable leg portions joined by a frangible drill end portion Dec. 2, 1997
5628601 Oil pan bolt with retaining means May. 13, 1997
5372532 Swivel head cap connector Dec. 13, 1994
5292217 Quick fastener Mar. 8, 1994
5228818 Fastener system for male and female threaded members Jul. 20, 1993
5169270 Compressible screw-type locking mechanism Dec. 8, 1992
4339218 Self-locking fastener Jul. 13, 1982

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