US PATENT SUBCLASS 24 / 623
.~.~.~.~.~.~ Having dome-shaped head and expansion slit along side

Current as of: June, 1999
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24 /   HD   BUCKLES, BUTTONS, CLASPS, ETC.

572  DF  SEPARABLE-FASTENER OR REQUIRED COMPONENT THEREOF {5}
588  DF  .~ Including receiving member having cavity and mating member having insertable projection guided to interlock thereby {12}
604  DF  .~.~ Projection having movable connection between components thereof or variable configuration {5}
614  DF  .~.~.~ Including resiliently biased projection component or surface segment {4}
618  DF  .~.~.~.~ Forming total external surface of projection {3}
619  DF  .~.~.~.~.~ And encircling hollow central area {3}
623.~.~.~.~.~.~ Having dome-shaped head and expansion slit along side {1}
624  DF  .~.~.~.~.~.~.~> And connected surface at tip of head

DEFINITION

Classification: 24/623

Having dome-shaped head and expansion slit along side:

(under subclass 619) Projection with its configuration having both (a) an arched or spherical portion which is the first portion of the configuration inserted into the receiving member during the securement operation, and (b) a gap along the side of the configuration for facilitating expansion and contraction thereof.