US PATENT SUBCLASS 156 / 137
.~.~ Flexible endless drive belt making

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}
137.~.~ Flexible endless drive belt making {2}
138  DF  .~.~.~> Forming grooves on inner surface
139  DF  .~.~.~> "V" or trapezoid section belt {2}

DEFINITION

Classification: 156/137

(under subclass 60) Processes directed to making of flexible endless power transmission belts.

(1) Note. Processes of making endless conveyor belts are excluded from this and indented subclasses unless the patent discloses that the belt also has utility as a power transmission belt. Appropriate manipulative subclasses below should be searched for the manufacture of other endless

belts.

SEE OR SEARCH CLASS

29, Metal Working,

525.1+, for processes of mechanically uniting ends of a continuous element to produce an endless member which may be utilized as a drive belt.

428, Stock Material or Miscellaneous Articles, appropriate subclasses, for a plural layer stock material product not elsewhere provided for. 474, Endless Belt Power Transmission Systems or Components, particularly

237+, for structure of a friction drive belt.