US PATENT SUBCLASS 264 / 138
WITH SEVERING, REMOVING MATERIAL FROM PREFORM MECHANICALLY, OR MECHANICALLY SUBDIVIDING WORKPIECE

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

138WITH SEVERING, REMOVING MATERIAL FROM PREFORM MECHANICALLY, OR MECHANICALLY SUBDIVIDING WORKPIECE {10}
139  DF  .~> Removing surface portion of composite workpiece to expose substrate
140  DF  .~> To form particulate product (e.g., flakes, etc.) {2}
145  DF  .~> Forming continuous work followed by cutting {2}
152  DF  .~> Cutting and uniting cut parts
153  DF  .~> Punching article from sheet material
154  DF  .~> Making hole or aperture in article {1}
157  DF  .~> Dividing work to form plural articles {3}
161  DF  .~> Flash or sprue removal type
162  DF  .~> Surface finishing (e.g., abrading, grinding, etc.)
163  DF  .~> Simultaneous severing and shaping, or severing while work remains on shaping surface

DEFINITION

Classification: 264/138

(under the class definition) Processes which include a step of 1) penetrating a shaped product from one face to another to cause at least a partial separation of the product, 2) tearing an article, 3) removing material from an article by means of a solid tool or implement, or 4) forming a comminuted product.

(1) Note. The formation of grooves and ridges in the surface of a workpiece resulting from a cutting separation of only the surface material does not come here but is placed in the appropriate subclasses below, e.g., subclasses 284 and 293.

(2) Note. For purposes of this subclass, the penetration need not necessarily be by a sharp tool but may be made by locally applied heat, for example.

(3) Note. Severing a mold charge from a fluent plastic bulk source is not considered cutting for this and indented subclasses.

(4) Note. To be placed herein, the operation must be performed on a shaped article or preform. Mixing, mulling, kneading of plastic materials are excluded.

SEE OR SEARCH THIS CLASS, SUBCLASS: 5+, for comminuting of liquids to form solid, particulate material.

118, for processes of uniting discrete bulk assembled particles including a subsequent cutting, grooving or comminuting step.

166, for processes of forming indefinite length articles including the step of comminuting or separating of a core only within an article.

284, and 293, for processes including a surface deformation, e.g., embossing and see the note in subclass 284.

678, for processes of firing, sintering, or vitrifying of shaped articles or preforms including a step of cutting, punching, or grinding.

SEE OR SEARCH CLASS

83, Cutting, appropriate subclasses for processes of cutting, severing, perforating, etc., where not claimed in combination.

241, Solid Material Comminution or Disintegration, appropriate subclasses for processes for solid material comminuting and see particularly note 4 of the definitions to Class 241 for the line as to the combination of shaping plus comminuting.