US PATENT SUBCLASS 280 / 454
.~.~.~.~.~ Double link retainer

Current as of: June, 1999
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280 /   HD   LAND VEHICLES

29  DF  WHEELED {21}
400  DF  .~ Articulated vehicle {30}
446.1  DF  .~.~ Condition responsive connections {4}
449  DF  .~.~.~ Overload release {3}
452  DF  .~.~.~.~ Pivoted jaw or hook {3}
454.~.~.~.~.~ Double link retainer

DEFINITION

Classification: 280/454

(under subclass 452) Devices in which the pivoted hook and coupling member on which the hook is mounted each have a link pivoted thereto, the two links also being pivoted one on the other.