US PATENT SUBCLASS 172 / 678
.~ Spring biased hitch
Current as of: June, 1999
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DEFINITION
Classification: 172/678
(under subclass 677) Apparatus including resilient means which is yieldable during operation in response to movement of the implement with respect to the hitching means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
239, for hitching means comprising complex linkages having springs to provide draft, pitch, or ground-level responsive depth control.
264+, for implements which may shift upon overload and provided with a spring return.
705+, for spring-biased tools.
SEE OR SEARCH CLASS
280, Land Vehicles, 483+, for articulated vehicles wherein the connection therebetween is resiliently biased in at least one direction.
