US PATENT SUBCLASS 411 / 159
.~.~.~.~ Cross section other than rectangular


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}
147  DF  .~.~ Member comprises washer formed as closed loop or apertured plate or as split ring {8}
157  DF  .~.~.~ Split ring having opposed ends offset axially {2}
159.~.~.~.~ Cross section other than rectangular


DEFINITION

Classification: 411/159

Cross section other than rectangular:

(under subclass 157) Device wherein the material from which the figure is fabricated displays, in section, something other than a four-sided polygon having 90< deg.