US PATENT SUBCLASS 425 / 335
SETS OF SHAPING COUPLES COMPRISING AN ENDLESS SURFACE FOR PRESS FORMING, RESHAPING (PLURAL STAGE OR PASS) OR VULCANIZING

Current as of: June, 1999
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425 /   HD   PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS

335SETS OF SHAPING COUPLES COMPRISING AN ENDLESS SURFACE FOR PRESS FORMING, RESHAPING (PLURAL STAGE OR PASS) OR VULCANIZING {2}
336  DF  .~> Corrugating means for running length work
337  DF  .~> Including intermediate chute, conveyor or guide means

DEFINITION

Classification: 425/335

(under the class definition) Apparatus comprising multiple couples for press reshaping, press forming or vulcanizing wherein at least one shaping body of each press couple is a continuous traveling pressure surface.

(1) Note. The combination of two rolls coacting with a common roll to provide two pressure areas is excluded see subclasses 363+, below.

(2) Note. Feed means which may include one or more endless surfaces but which in no way contribute to the shape of the product are not considered a shaping couple for this subclass.

(3) Note. Included within the scope of this subclass are devices which one endless surface cooperates with multiple shaping surfaces to provide plural press areas. Also included are devices which feed a work back through a shaping couple including an endless surface to perform multiple press operations.

SEE OR SEARCH THIS CLASS, SUBCLASS:

329, for three or more endless surfaces cooperating to define a shaping aperture. SEE OR SEARCH CLASS

26, Textiles: Cloth Finishing,

99+, for web stretching devices which may include sets of roll couples see, moreover, subclass 78, for roll couple nip control means responsive to the detection of the web condition.

28, Textiles: Manufacturing,

240+, for filament stretching devices which may include sets of roll couples.

100, Presses,

144+, for endless surface pressing device of general utility.