US PATENT SUBCLASS 493 / 42
.~ With shaping or compacting of filter material

Current as of: June, 1999
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493 /   HD   MANUFACTURING CONTAINER OR TUBE FROM PAPER; OR OTHER MANUFACTURING FROM A SHEET OR WEB

39  DF  CIGARETTE FILTER MAKING {5}
42.~ With shaping or compacting of filter material {4}
43  DF  .~.~> Including heating
44  DF  .~.~> Including fluid contact for forming
45  DF  .~.~> Cutting continuous length rod into determinate lengths
46  DF  .~.~> Prior to assembly with other cigarette filter material

DEFINITION

Classification: 493/42

With shaping or compacting of filter material:

(under subclass 39) Method or apparatus combined with trimming or deforming material being formed into a filter, or including pressing adjacent units, e.g., fibers, of material being formed into a filter closer together, to give the filter a configuration to better effect the flow of gases therethrough.

(1) Note. This subclass includes shaping of filter material with thinning flow of the material only if combined with assembling of filter components.

(2) Note. Cutting or severing may be "shaping" in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

395+, for bending to shape a filter paper, generally, if there is no thinning flow of the material.

SEE OR SEARCH CLASS

264, Plastic and Nonmetallic Article Shaping or Treating: Processes, for a method of compacting to shape a mass of particulate or fibrous material other than when making a cigarette filter component. 425, Plastic Article or Earthenware Shaping or Treating: Apparatus,

406+, for apparatus for compacting to shape a mass of particulate or fibrous material other than when making a cigarette filter component.