US PATENT SUBCLASS 144 / 406
.~.~.~ Sensing slack or tension (e.g., by use of dancer)

Current as of: June, 1999
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144 /   HD   WOODWORKING

382  DF  WITH USE OF CONTROL MEANS ENERGIZED IN RESPONSE TO ACTIVATOR STIMULATED BY CONDITION SENSOR {6}
402  DF  .~ Sensing work or product (e.g., by X-ray) {6}
403  DF  .~.~ Including plural sensors or sensor responsive to plural conditions {6}
406.~.~.~ Sensing slack or tension (e.g., by use of dancer)

DEFINITION

Classification: 144/406

Sensing slack or tension (e.g., by use of dancer):

(under subclass 403) Subject matter including (a) detecting the lateral movement of a flexible portion of an elongated workpiece or (b) detecting the degree of tautness in an elongated workpiece.

(1) Note. A typical disclosure found in this subclass comprises a system including two woodworking mills through which the work passes sequentially. In the space between the mills, the work is engaged by a detecting means urged against the work along a line substantially at right angles to the direction of work movement. The position of said means along that line indicates the tautness of the work passing between the mills, and this position is used to control the tautness.

SEE OR SEARCH THIS CLASS, SUBCLASS:

396, and 413, for other sensing of slack or tension in work or product.

SEE OR SEARCH CLASS

226, Advancing Material of Indeterminate Length,

44, for a "dancer" controlling feed of material; see the (4) Note under the definition of Class 72, subclass 382.