US PATENT CLASS 409
Class Notes


Current as of: June, 1999
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409 /   HD   GEAR CUTTING, MILLING, OR PLANING



DEFINITION

Classification: 409/

This class is the home for a patent directed to the method of or a machine for penetrating material without substantially reshaping the flow of such material by means of a solid tool whose edge defines a line of cut, where in the device is intended to: (a) form a product from a workpiece, which product includes protuberances intended to interfit with pockets in a cooperating member, generally for the transmission of motive force from one of the members to the other; (b) cut by a rotating cutter that forms a shaped surface on the workpiece; or (c) cut by a cutter that reciprocates relative to a workpiece and forms a shaped surface on the workpiece).

See the Search This Class, Subclass references below for specific subclass references

SEE OR SEARCH THIS CLASS, SUBCLASS:

1+, for a device intended to form a product from a workpiece, which product includes protuberances intended to interfit with pockets in a cooperating member, generally for the transmission of motive force from one of the members to the other.

64+, for a device intended to cut by a rotating cutter that forms a shaped surface on the workpiece.

243+, 288, for a device intended to cut by a cutter that reciprocates relative to a workpiece and forms a shaped surface on the workpiece.

REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS 29, Metal Working, (a) appropriate subclasses for gear cutting, milling, or planing combined with another work-treating operation, particularly

90.01+, when the other operation is burnishing; (b) subclasses 1.01-179 (as appearing in the class schedule) for cutting to shape peculiar to the manufacture of a device provided for in that group of subclasses. (This note may be applied to numerous classes not set forth in these search notes, i.e., a device peculiar to the manufacture of a certain article will be found in the class providing for the manufacture of that article.)

30, Cutlery, for a hand tool used to cut work to shape.

82, Turning, for cutting to shape of a rotating workpiece; and

46+, for cutting to subdivide by use of a cutter orbiting about an axis passing through the work.

83, Cutting, for subdividing of two portions of work, generally. Search

875+, for grooving with the removal of material by use of a cutter providing no intentional shape to the bottom of the groove. As a practical matter, grooving of Class 83, subclasses 875+ is limited to the action of a saw blade. Search subclass 879 for scoring of a workpiece with no removal of chips. A cutting maching or method or both cut to shape and cut to subdivide with the same or different tools will be found in class (409).

144, Woodworking, for cutting limited to the shaping of wood. (This note may be applied to numerous classes not set forth in these notes, i.e., a device peculiar to shaping of certain material will be found in the class providing for shaping of that material).

157, Wheelwright Machines,

13, for apparatus for or method of treating the outer periphery of a rubber tire casing by a slitting or machining operation.

173, Tool Driving or Impacting, for subject matter directed to driving or impacting a tool, when such subject matter includes combined features peculiar to tool driving, but does not include features limiting the subject matter to a specific tool art, such as specific shape of the work contacting portion of a tool, related tools, or an opposed work support.

269, Work Holders, the residual locus for a device for clamping, supporting, and/or holding an article(s) in position to be operated on or treated. See the notes thereunder for other related loci.

279, Chucks or Sockets, for a work or tool holder of general utility adapted to approach the member being held by jaws converging thereupon.

407, Cutters, for Shaping, for a tool element adapted to be attached to a machine of this class. A tool combined with any other work recognizing (engaging) structure or with means to drive or support the tool and move relative to the tool will be found in this class (409) rather than Class 407.

408, Cutting by Use of Rotating Axially Moving Tool, for a machine for or process of cutting by use of a tool turning about an axis and moving along that axis toward a workpiece wherein no additional motion is imparted to the cutting edge of the tool during operation; especially

26+, for the combination of cutting in the manner of that class (408) with cutting in the manner of this class (409). A device which may be converted from an operation of this class to an operation of Class 408 is to be found in this class (409).

451, Abrading, for shaping a crystalline cutting, particularly

67+, for abrading combined with cutting to shape. Class 409 is considered to be superior to Class 451, so that a patent including a claim proper for this class and another claim proper for Class 451 will be classified in this class. Similarly, a disclosure of both abrading to shape and cutting to shape with no claim specific to the type of cutting tool will be found in Class 409.

483, Tool Changing, generally for a process or apparatus including a tool transfer means combined with a tool support or storage means.