US PATENT SUBCLASS 24 / 599.7
.~.~.~.~.~.~.~.~ Coil type spring

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}
598.1  DF  .~.~ Projection passes through cavity then moves toward noninserted portion of its member to complete interlock (e.g., snap hook) {2}
598.4  DF  .~.~.~ Hook type projection member {5}
598.7  DF  .~.~.~.~ Noninserted portion of projection member includes movably connected gate for closing access throat {5}
599.1  DF  .~.~.~.~.~ Pivotally connected gate {5}
599.4  DF  .~.~.~.~.~.~ Having means biasing gate about pivot {2}
599.6  DF  .~.~.~.~.~.~.~ Includes distinct biasing spring {1}
599.7.~.~.~.~.~.~.~.~ Coil type spring {1}
599.8  DF  .~.~.~.~.~.~.~>.~.~ Coiled about pivotal axis of gate

DEFINITION

Classification: 24/599.7

Coil type spring:

(under subclass 599.6) Barrier means wherein the separate spring has a segment bent or molded into the shape of at least two partial, similar adjacent loops which curve around a common central axis and store the biasing force of the spring.