US PATENT SUBCLASS 409 / 65
.~ Thread or helix generating

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

64  DF  MILLING {29}
65.~ Thread or helix generating {9}
66  DF  .~.~> Process
67  DF  .~.~> With means to regulate operation by use of templet, card, or other replaceable information supply {3}
71  DF  .~.~> With nonthread or nonhelix generating, milling cutter
72  DF  .~.~> With means to advance work or product
73  DF  .~.~> Plural cutters or work holders
74  DF  .~.~> With planetary cutter
75  DF  .~.~> Work means to move work axially and means to interrelate work movement with cutter rotation
76  DF  .~.~> With means to rotate work and means to interrelatedly infeed the work relative to the cutter {1}
78  DF  .~.~> With means to circumferentially adjust the position of the cutter with respect to the work

DEFINITION

Classification: 409/65

Thread or helix generating:

(under subclass 64) Apparatus or method for formation of a recess extending about and spirally along a rodlike or tubelike workpiece by a rotating cutting tool making several cutting passes through the workpiece with relative positioning of the workpiece and the cutting tool between cutting passes so that the cutting action of each pass is such that the final configuration of the recess is formed by more than one cutting pass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

10, for similar formation of the intermeshing elements of a gear.

48, for generating a screw thread on a worm, i.e., a device for transmitting rotary movement to a gear.

SEE OR SEARCH CLASS

29, Metal Working,

33+, for apparatus for thread or helix milling combined with nonmilling metal working.

65, Glass Manufacturing, 309, for a glass press-molding machine providing screw threads on a product, see the notes thereunder.

72, Metal Deforming,

88+, for thread rolling between "platens"; and subclasses 95+ and 102+ for forming a thread in a tube body by spirally corrugating the tube body.

76, Metal Tools and Implements, Making,

101.1+, for a process of making a tool, particularly subclasses 108.1+ for a process of making a drill bit.

82, Turning,

110+, for a screw cutting lathe.

142, Wood Turning,

23, 26+, and 35 for cutting a spiral groove in wood.

408, Cutting by Use of Rotating Axially Moving Tool, for cutting a screw thread by a cutter that turns about an axis and moves along that axis toward a workpiece with no additional motion during operation.

451, Abrading, particularly 47, and 48 for a method of grinding to form a worm or screw thread and subclasses 95+ for the corresponding apparatus.

470, Threaded, Headed Fastener, or Washer Making: Process and Apparatus,

57+, for a machine for forming a thread on a bolt or screw.