US PATENT SUBCLASS 411 / 173
.~.~.~ Means to engage extends through aperture

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}
172  DF  .~ Nut having a portion for attachment to substructure {2}
173.~.~.~ Means to engage extends through aperture {1}
174  DF  .~.~.~> Means to engage grasps an edge of substructure {1}

DEFINITION

Classification: 411/173

Means to engage extends through aperture:

(under subclass 172) Device wherein the single element rests, in part, against one of the surfaces of the substructure and has a portion (e.g., an arm, tongue, etc.) which passes through the aperture for the bolt enroute to establishing contact with the other surface of the substructure.

(1) Note. The provision and utilization of at least one opening in the substructure, which opening is in addition to the aperture for the bolt, for the passage of a portion which is the equivalent of the portion of this subclass, appears in subclass 172 above.