US PATENT SUBCLASS 24 / 619
.~.~.~.~.~ And encircling hollow central area

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.~.~.~.~.~ And encircling hollow central area {3}
620  DF  .~.~.~.~.~.~> Having separate mounting means inserted into area {1}
622  DF  .~.~.~.~.~.~> Having separate mounting means encompassing cross section of projection
623  DF  .~.~.~.~.~.~> Having dome-shaped head and expansion slit along side {1}

DEFINITION

Classification: 24/619

And encircling hollow central area:

(under subclass 618) Projection wherein the resilient* material forms a configuration having a central area (a) encircled by the material, and (b) at least partially devoid of any other projection member structure.

(1) Note. A cross section of the projection's encircling configuration transverse to the insertion path need not fully enclose the central void area with a continuous surface formed by the resilient* material, if there are segments of the resilient* material on all sides of the void.