US PATENT SUBCLASS 411 / 162-- .~.~.~.~ Variations comprise circumferentially spaced projections or recesses inset from both peripheries

US PATENT SUBCLASS 411 / 162
.~.~.~.~ Variations comprise circumferentially spaced projections or recesses inset from both peripheries

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}
160	DF	.~.~.~ Closed loop having plural variations in the profile of a contact surface or a peripheral edge thereof {3}
162		.~.~.~.~ Variations comprise circumferentially spaced projections or recesses inset from both peripheries

DEFINITION

Classification: 411/162

Variations comprise circumferentially spaced projections or recesses inset from both peripheries:

(under subclass 160) Device wherein the pattern of recurring changes in the figure's dimension in an axial direction is formed by a plurality of raised or depressed portions within one or both of the regions, which portions are spaced inwardly from the figure's outer periphery and outwardly from its inner periphery and are spaced from one another along an annular path.

(1) Note. In the instance of a figure formed (e.g., stamped) from thin material, the structure which comprises a raised portion within one region usually comprises a depressed portion within the other region.