US PATENT SUBCLASS 411 / 126
.~.~.~ Member includes means which attempt to penetrate 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}
116  DF  .~ Head or nut side face held by discrete member (e.g., side lock) {7}
125  DF  .~.~ Sheet metal member having resilient pawl distorted therefrom {2}
126.~.~.~ Member includes means which attempt to penetrate substructure

DEFINITION

Classification: 411/126

Member includes means which attempt to penetrate substructure:

(under subclass 125) Device wherein the sheet metal member includes, on its substructure-confronting region, means (e.g., one or more pointed protrusions, sharp edges, etc.)

for digging into, or attempting to dig into, the surface of the substructure in order to either eliminate or else minimize turning of the member relative to the substructure.