US PATENT SUBCLASS 144 / 421
.~.~ To control predetermined sequence of operating movements (e.g., of one tool operating on work)

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}
420  DF  .~ Sensing tool or tool-linked part {5}
421.~.~ To control predetermined sequence of operating movements (e.g., of one tool operating on work) {1}
422  DF  .~.~.~> Of different operating assemblages {2}

DEFINITION

Classification: 144/421

To control predetermined sequence of operating movements (e.g., of one tool operating on work):

(under subclass 420) Subject matter including regulating the succession of function or movement of one or more operating assemblages.

(1) Note. The term "operating assemblage" is intended to include a tool, or any element or group of elements, acting together, which performs an action or produces an effect upon the work or product; or which causes a tool movement necessary to working of the work; or which is ancillary to a woodworking instrumentality.

(2) Note. This subclass is the locus of patents disclosing control of a sequence of operations or movements of a single operating assemblage. For example, a disclosure wherein a tool advances toward and retracts from the work, under control of switches positioned at the limits of travel of the tool, would be placed herein. See subclasses below for control of different mechanisms.