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Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
411378000 EXTERNALLY THREADED FASTENER ELEMENT, E.G., BOLT, SCREW, ETC. 282
411337000 HEADED FASTENER ELEMENT WITH NUT, WASHER, SECURING MEANS OR CAP 235
411081000 THREADED FASTENER LOCKED TO A DISCREET STRUCTURE (E.G., PLATE, RAIL, WHEEL) 226
411015000 HAVING SEPARATE EXPANDER MEANS 168
411190000 HAVING STRUCTURE TO RESTRICT ROTATION OF THREADED, MATING PIECES (E.G., NUT LOCK) 108
411427000 INTERNALLY THREADED FASTENER ELEMENT, E.G., NUT, ETC. 94
411500000 HEADED FASTENER ELEMENT 81
411439000 IMPACT DRIVEN FASTENER, E.G., NAIL, SPIKE, TACK, ETC. 76
411511000 FASTENER SECURING ELEMENT 35
411082000 INCLUDING SETTABLE MATERIAL 31
411531000 WASHER STRUCTURE 29
411001000 TORQUE RESPONSIVE NUT OR BOLT DRIVING CONNECTION 25
411008000 WITH MEANS TO INDICATE APPLICATION OF PREDETERMINED STRESS-STRAIN 17
411140500 TENSIONED ALONG THE LONGITUDINAL AXIS BY A COAXIAL FORCE APPLYING DEVICE (E.G., MECHANICAL TENSIONER) 8
411820500 TEMPERATURE SENSITIVE OR RESPONSIVE 1
20080199273Method to limit a creep of bolts and gaskets of bolted flanged connections - A method to limit or exclude operational creep of the bolts and gaskets of Bolted Flanged Connections (BFCs) is disclosed. The method consists in the use of bolts and gaskets manufactured from the same Shape Memory Alloys (SMAs) having temperature intervals of reverse martensitic phase transformation close to operational temperatures of the BFCs. These bolts and gaskets of the BFCs are shape-memorized to the compression (bolts) and “swelling” (gaskets) during (1) the formation of stress-induced martensite under temperature of martensite state of the SMAs while bolt preload application, or (2) during the formation of stress-induced martensite while loading-unloading previously stretched bolts and previously compressed gaskets under temperature of martensite state resulting in residual bolt elongations and residual gasket contraction followed by bolt preload application. Constrained shape recovery of initial length of the bolts and initial thickness of the gaskets under operational temperatures of the BFCs is accompanying by appearance of reactive shape-recovering stresses having direction inverse to the direction of operational creep of the bolts and gaskets that limits or excludes their operational creep.08-21-2008

Patent applications in all subclasses Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener