US PATENT SUBCLASS 411 / 119
.~.~ Member having opening or notch engaging a bolt head or nut on two sides

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}
119.~.~ Member having opening or notch engaging a bolt head or nut on two sides {2}
120  DF  .~.~.~> And element maintaining member in operative engagement with bolt head or nut
121  DF  .~.~.~> Member elastically or plastically deformable for attaching it to bolt head or nut

DEFINITION

Classification: 411/119

Member having opening or notch engaging a bolt head or nut on two sides:

(under subclass 116) Device wherein that portion of the member which engages the one or more sides or formations of the bolt head or nut is the radially inwardly facing edge or wall of a passage through the member, the passage being located either (a) entirely within the boundaries of the member or (b) along a boundary thereof and thus having a periphery which is not a closed figure, the engagement, in either case, involving at least two of the sides or formations of the bolt head or nut.

(1) Note. In the instance of a hexagonal bolt head or nut, the engagement of the member therewith usually involves at least three of the sides or formations.