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Class Information
Number: 411/418
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
Description: Subject matter wherein the discontinuity which causes the ridge interruption comprises a relatively narrow groove extending axially of the fastening means.










Sub-classes under this class:

Class Number Class Name Patents
411/420 Inclined slot 5
411/419 Shank bifurcated by slot extending entirely therethrough 20


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8616819 Lock system Dec. 31, 2013
8511957 Fastener for stucco or hard board substrates Aug. 20, 2013
8511958 Screw with double notches Aug. 20, 2013
8479897 Bolt for hydraulic disc brake caliper Jul. 9, 2013
8348571 Screw Jan. 8, 2013
RE42207 Masonry anchor device Mar. 8, 2011
7871219 Connection mechanism of plate member and shaft member Jan. 18, 2011
7841818 Structural fasteners and components thereof Nov. 30, 2010
7832971 Threaded element Nov. 16, 2010
7811024 Dovetail alignment and locking system Oct. 12, 2010
7762752 Bolt and thread rolling die and the manufacture of the bolt Jul. 27, 2010
7682120 Positive locking machine screw mechanism Mar. 23, 2010
7670091 Bolt and thread rolling die and the manufacture of the bolt Mar. 2, 2010
7607878 Anti-vibration/rotation device for split bolts Oct. 27, 2009
7565078 Thread structure for an optical lens Jul. 21, 2009
7334767 Tool-less frame fastening system Feb. 26, 2008
7160072 Method of attaching a functional element; die; functional element; component assembly Jan. 9, 2007
7140825 Self tapping bolt Nov. 28, 2006
7017952 Fluid connector Mar. 28, 2006
6979163 Push-in removable fastener Dec. 27, 2005
6902366 Sealable fastener with circumferential sealant channel and sealant delivery groove for delivering sealant into the circumferential sealant channel Jun. 7, 2005
6860689 Fastening assemblies and components thereof Mar. 1, 2005
6817810 Piering device with adjustable helical plate Nov. 16, 2004
6682267 Piering device with adjustable helical plate Jan. 27, 2004
6669423 Toolless thumb screw with adjustable height knob Dec. 30, 2003
6530731 Self-tapping insert, insert assembly, and method for mounting the insert Mar. 11, 2003
6478520 Self-threading screw for metal with six formers of prismatic shape Nov. 12, 2002
6450748 Screw having a screw thread formed with concave facets Sep. 17, 2002
6347917 Bolt with column and polygonal pillar to prevent seizure Feb. 19, 2002
6332741 Masonry anchor device Dec. 25, 2001
6254150 Locking arrangement for a movable vehicle body part Jul. 3, 2001
6158310 Drive system having a strengthened drive system member for resisting torsional stresses Dec. 12, 2000
6106208 Screw with two cut removing curved grooves Aug. 22, 2000
6086303 Distance screw Jul. 11, 2000
6079921 Anchor bolt for friable material Jun. 27, 2000
6077015 Quick insertion screw Jun. 20, 2000
6065919 Self-tapping screw with an improved thread design May. 23, 2000
6056491 Screw having cutting teeth formed on threads thereof May. 2, 2000
6022177 Spacer screw Feb. 8, 2000
6015252 Self-tapping screw with improved cutting point Jan. 18, 2000
5980177 Fastener Nov. 9, 1999
5961267 Thread forming fastener Oct. 5, 1999
5947668 Self-retaining bolt Sep. 7, 1999
5895187 Pilot screw Apr. 20, 1999
5868537 Sponge head retainer pin Feb. 9, 1999
5863165 Self-tapping screw Jan. 26, 1999
5797572 Plumbing fixture mounting device using a threaded rod with interrupted threads Aug. 25, 1998
5772374 Tapping screw and mechanism of engaging member to be engaged using the same Jun. 30, 1998
5674035 Thread forming screw Oct. 7, 1997
5667348 Screw for fibrous boards Sep. 16, 1997

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