(under subclass 525) Apparatus wherein the flow-affecting means comprises structure which is clearly intended to interfere with, or otherwise restrict, but not to close off the movement of a load, or a portion thereof, along or within a flow path.
(1) Note. In the instance of an article-type load, yieldable (elastic, pivotable, etc.) elements frequently are utilized to slow or to even the flow, whereas, in the case of bulk material, the restricting structure often is of a kind which levels, or otherwise configures the cross-section of a moving load.
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525, for related structure, but wherein the effect thereof upon the movement of a load is not expressly related to retarding its velocity or reducing its volume.
530+, for related structure, but which has the capability of, and is intended to be used at some time for, closing off the flow path.
