US PATENT SUBCLASS 29 / 2.1
BIAS (I.E., HELICALLY) CUTTING OF TUBULAR STOCK

Current as of: June, 1999
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29 /   HD   METAL WORKING

2.1BIAS (I.E., HELICALLY) CUTTING OF TUBULAR STOCK {7}
2.11  DF  .~> Including orbital cutter {2}
2.14  DF  .~> Including means to inflate stock
2.15  DF  .~> With means to feed stock along support or mandrel {3}
2.2  DF  .~> With means to rotate and store stock supply {1}
2.22  DF  .~> With means for arcuate shift of mandrel
2.23  DF  .~> Including means to handle produced strip or web {1}
2.25  DF  .~> Method

DEFINITION

Classification: 29/2.1

BIAS (I.E., HELICALLY) CUTTING OF TUBULAR STOCK:

(under the class definition) Process or apparatus for severing hollow work of generally circular or oval cross section by moving work and tool relative to each other so as to describe a helical line of severance along the surface of the hollow work.

(1) Note. Included in this and indented subclasses is the bias cutting of "article-like" work where there is no "supply".

SEE OR SEARCH CLASS

30, Cutlery, for a manually supported cutting implement.

33, Geometrical Instruments,

21.1+, for means to scribe, score, or scratch lines on curved surfaces.

69, Leather Manufactures, 9+, for skiving or splitting of leather.

82, Turning,

47, for a process under that class definition of cutting hollow work while effecting relative rotary movement about an axis passing through the work and subclass 82 for the corresponding apparatus.

83, Cutting, especially

54, for a process of cutting a hollow workpiece, generally, subclasses 178+ for cutting apparatus including a tool inside hollow work and subclasses 401+ for means to move work relative to tool station.

142, Wood Turning,

23, 35 for spiral groove wood turning.

144, Woodworking,

209.1+, for a veneering lathe.

242, Winding, Tensioning, or Guiding, for a device for winding the product of this subclass. Note that the combination of such a cutting means with a product winding means is to be found in Class 29,

2.1+,.

269, Work Holders, especially

47+, for means to support work while performing a bias cutting operation. The combination of such support means with means to sever being classified in Class 29.

408, Cutting by Use of Rotating Axially Moving Tool, for cutting tubular work by a tool that turns about an axis and moves along that axis but has no additional motion during operation.

409, Gear Cutting, Milling, or Planing,

65+, for a machine for generating a thread (or helix) by relative cutter and blank movements.

451, Abrading,

48, for a process of grinding a drill, thread, reamer, or hob.

470, Threaded, Headed Fastener, or Washer Making: Process and Apparatus, appropriate subclasses for thread cutting by means of a chasing cutter, other than as provided for in Class 408.