US PATENT SUBCLASS 411 / 140
.~.~ Elongate member moves in longitudinally extending opening in bolt head or nut to enter 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}
132  DF  .~ Lock washer-type member located between substructure and bolt head or nut {8}
140.~.~ Elongate member moves in longitudinally extending opening in bolt head or nut to enter substructure

DEFINITION

Classification: 411/140

Elongate member moves in longitudinally extending opening in bolt head or nut to enter substructure:

(under subclass 132) Device wherein the member is a nail, pin, screw, or other element having length as its principal dimension, which element is contained by or passes through a recess, or an aperture, respectively, in, and extending more or less parallel to the principal axis of, the bolt head or nut, and further wherein the element is intended to be moved along its longitudinal axis to an extent where a portion of it enters the substructure while another portion remains in engagement with the bolt head or nut, and additionally wherein entry of the element into the substructure is by way of either (a) utilizing a recess provided therein for receiving it, or (b) having sufficient force applied to it to cause it to penetrate the surface of the substructure.

(1) Note. Exemplary of the element of (a) of the definition is a spring-loaded plunger, while the element found most commonly in (b) is either a pointed, machine screw which is carried by an off-center, threaded bore in the bolt head or nut, or a threadless fastener which is impact driven into the substructure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

132, in regard to the reference to this subclass (140) which appears in (3) Note thereof.