US PATENT SUBCLASS 156 / 218
.~.~.~.~ Hollow cylinder article


Current as of: June, 1999
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156 /   HD   ADHESIVE BONDING AND MISCELLANEOUS CHEMICAL MANUFACTURE

1  DF  METHODS {7}
60  DF  .~ Surface bonding and/or assembly therefor {93}
196  DF  .~.~ With permanent bending or reshaping or surface deformation of self sustaining lamina {11}
217  DF  .~.~.~ Bending of one piece blank and joining edges to form article {1}
218.~.~.~.~ Hollow cylinder article


DEFINITION

Classification: 156/218

(under subclass 217) Processes in which the article produced by the reshaping operation is a hollow cylinder.

SEE OR SEARCH THIS CLASS, SUBCLASS:

215, for processes of wrapping a sheet about a cylindrical core to form a cylindrical cover thereon which is adhesively bonded to the core.

SEE OR SEARCH CLASS

72, Metal Deforming,

48+, for a method or machine within the scope of the class which includes a step of or means for press-seaming the edges of a single metal blank to form a tube.

162, Paper Making and Fiber Liberation, 118, for processes of making tubes combined with paper making.