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Class Information
Number: 411/371
Name: Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener >

Sub-classes under this class:

Class Number Class Name Patents
411/1 Torque responsive nut or bolt driving connection 38
411/14.5 Tensioned along the longitudinal axis by a coaxial force applying device (e.g., mechanical tensioner) 37
411/15 Having separate expander means 94
411/190 Having structure to restrict rotation of threaded, mating pieces (e.g., nut lock) 27
411/337 Headed fastener element with nut, washer, securing means or cap 72
411/378 Externally threaded fastener element, e.g., bolt, screw, etc. 97
411/427 Internally threaded fastener element, e.g., nut, etc. 219
411/439 Impact driven fastener, e.g., nail, spike, tack, etc. 61
411/500 Headed fastener element 45
411/511 Fastener securing element 47
411/531 Washer structure 190
411/548 Miscellaneous 60
411/8 With means to indicate application of predetermined stress-strain 84
411/81 Threaded fastener locked to a discreet structure (e.g., plate, rail, wheel) 24
411/82 Including settable material 304
411/82.5 Temperature sensitive or responsive 25
411/900 Fastener or fastener element composed of plural different materials 55
411/904 Fastener or fastener element composed of nonmetallic material 29
411/909 Fastener or fastener element composed of thermo-responsive memory material 61
411/910 Antitamper means 238
411/912 Antisplitting fastener 10
411/913 Self-expanding anchor 260
411/914 Coated bolt 61
411/915 Bolt having packing joint 55
411/916 Bolt having tension feature 75
411/917 Nut having tension feature 54
411/918 Threadless nut 45
411/919 Screw having driving contacts 111
411/920 Staple 70
411/921 Multiple-pronged nail, spike or tack 35
411/922 Nail, spike or tack having locking device 45
411/923 Nail, spike or tack having specific head structure 61
411/924 Coupled nut and bolt 8
411/955 Locked bolthead or nut 6
411/998 With positive bolt lock 7
411/999 With retainer (e.g., tether) 276
411/DIG.1 Thread forming, reforming, or cleaning 19
411/DIG.2 Temperature modification 18
411/DIG.3 Utilizing fluid pressure 17

Patents under this class:

Patent Number Title Of Patent Date Issued

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