Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Member or portion thereof located between substructure and...
Reexamination Certificate
2007-08-28
2007-08-28
Lugo, Carlos (Department: 3676)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Member or portion thereof located between substructure and...
C411S114000, C411S115000, C411S145000, C411S150000, C411S187000, C411S332000
Reexamination Certificate
active
10257576
ABSTRACT:
A washer for a threaded fastener assembly and a threaded fastener assembly incorporating such a washer. The washer includes a body having a central axis including two opposed sides an outer periphery and an inner periphery defining a central aperture extending between the two opposed sides. The body incorporates an engaging face for frictionally engaging a component of the threaded fastener assembly or a work-piece. A ramp structure extends angularly between the inner periphery and one side for interacting with a further component of the threaded fastener assembly to provide a mechanical connection therebetween for resisting unthreading of the threaded fastener assembly. The engaging face is associated with the other side and extends circumferentially about the central axis. The relative positions of the engaging face and the ramp structure with respect to the central axis is such that in use torque transferred through the engaging face is greater than torque acting through the ramp structure. With this arrangement, unwanted loosening of the threaded fastener assembly.
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Lugo Carlos
Sughrue & Mion, PLLC
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