US PATENT SUBCLASS 172 / 264
.~ Against spring return device


Current as of: June, 1999
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172 /   HD   EARTH WORKING

261  DF  OVERLOAD SHIFTING {6}
264.~ Against spring return device {1}
265  DF  .~.~> Swinging about fixed pivot axis {1}


DEFINITION

Classification: 172/264

(under subclass 261) Apparatus wherein resilient means is employed to resist shifting of the element, the resilient means returning the element to operative position after passing of the overload.

SEE OR SEARCH THIS CLASS, SUBCLASS:

705+, for spring-biased tools in which the spring resistance remains constant or increases as the tool shifts from normal working position.

SEE OR SEARCH CLASS

280, Land Vehicles,

455, for articulated vehicles having an overload release of the type having a pivoted jaw or hook with a resilient keeper.