Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Coacting shaping surfaces
Patent
1979-02-16
1980-06-10
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Coacting shaping surfaces
425 28B, 425403, 249142, 249180, 249184, B29D 2900, B29C 500
Patent
active
042070520
ABSTRACT:
The invention is concerned with an apparatus and process for curing tread and track belts. The apparatus comprises a plurality of inner segments which fit together to form an outer generally cylindrical mold face surface of an inner cylinder along with means for retracting said plurality of inner segments towards the axis of said inner cylinder and means for heating said plurality of inner segments. Also part of the apparatus is a plurality of outer segments which fit together to form an inner generally cylindrical mold face surface of an outer cylinder, said outer cylinder being coaxial with said inner cylinder and of generally equal length therewith, along with means for retracting said plurality of outer segments away from the common axis of said cylinders and means for heating said plurality of outer segments. Finally the apparatus includes a pair of rings adapted to seal said inner cylinder to said outer cylinder at the ends thereof, at least one of said sealing rings being removable so that an uncured tread or track belt is positionable between said plurality of inner segments and said plurality of outer segments when said plurality of inner segments is retracted toward said common axis and said plurality of outer segments is retracted away from said common axis. The process is concerned with finish forming and curing an uncured tread or track belt in such an apparatus.
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Caterpillar Tractor Co.
Flint, Jr. J. Howard
Grant John W.
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