US PATENT SUBCLASS 411 / 174
.~.~.~ Means to engage grasps an edge of substructure

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  DF  .~.~.~ Means to engage extends through aperture {1}
174.~.~.~ Means to engage grasps an edge of substructure {1}
175  DF  .~.~.~.~> And has projection contacting periphery of aperture

DEFINITION

Classification: 411/174

Means to engage grasps an edge of substructure:

(under subclass 172) Device wherein the single element is, at least in part, U-shaped for the purpose of being forced over an edge portion of the substructure.

(1) Note. "Edge" refers to an outer boundary of the substructure, which substructure usually is in the nature of a panel.