US PATENT SUBCLASS 156 / 144
.~.~.~ Assembling preformed helical coil or rings with separate tube

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}
143  DF  .~.~ Helical wire or plural ring reinforced flexible tube making {1}
144.~.~.~ Assembling preformed helical coil or rings with separate tube

DEFINITION

Classification: 156/144

(under subclass 143) Processes in which the helical coil or plural rings utilized as the reinforcing means is in the form of a coil or rings prior to assembly with the material forming the tube or conduit.