US PATENT SUBCLASS 411 / 257
.~ Including material in the nature of (1) a metallic coating, (2) a quantity of fusible metal or (3) a discrete member formed of ductile metal

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

190  DF  HAVING STRUCTURE TO RESTRICT ROTATION OF THREADED, MATING PIECES (E.G., NUT LOCK) {13}
257.~ Including material in the nature of (1) a metallic coating, (2) a quantity of fusible metal or (3) a discrete member formed of ductile metal

DEFINITION

Classification: 411/257

Including material in the nature of (1) a metallic coating, (2) a quantity of fusible metal or (3) a discrete member formed of ductile material:

(under subclass 190) Device wherein the means comprises or includes either (a) a metallic composition which has been applied as a layer on the surface of at least a part of the

interengaging portions of the threaded elements, (b) a supply, or a member, of a metal which is subjected to melting and rehardening or (c) a distinct member of a metal which is sufficiently soft (e.g., malleable) as to yield upon the application of a relatively small amount of force.