US PATENT SUBCLASS 411 / 169
.~.~ Mass of bolt head or nut offset from fastener longitudinal axis

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

81  DF  THREADED FASTENER LOCKED TO A DISCREET STRUCTURE (E.G., PLATE, RAIL, WHEEL) {13}
166  DF  .~ Design of fastener or substructure restricts rotation (e.g., flattened head rotatable in receiving slot, depression in substructure, bolt clipped to substructure) {5}
169.~.~ Mass of bolt head or nut offset from fastener longitudinal axis

DEFINITION

Classification: 411/169

Mass of bolt head or nut offset from fastener longitudinal axis:

(under subclass 166) Device wherein the mass of either the head of the bolt or of the nut is not centered on the longitudinal axis thereof, whereby, when that axis is horizontal or significantly so, there will be a tendency for

the bolt or nut, if properly oriented, to both oppose turning in an unthreading direction and encourage turning in the opposite direction.