Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire... – Toroidal or annular female shaping means and coacting means...
Patent
1992-01-02
1992-12-22
Hart, Charles
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
Toroidal or annular female shaping means and coacting means...
249 79, 425 50, B29C 3500
Patent
active
051733080
ABSTRACT:
The steam platen comprises spaced flat horizontal exterior walls each having a horizontal outside surface, and concentric cylindrical walls, one an inside wall and the other an outside wall both of which extend from the first to the second flat wall. The first flat wall abuts a mold half and the second flat wall abuts a supporting structure such as a base or a head, and these flat walls may be termed a mold sidewall and a bolster sidewall respectively. The interior space between the first and second flat walls has a plurality of partitions which extend from one flat wall to the other and which form one or more continuous serpentine steam passages which constitute a steam cavity. This steam cavity covers the entire area of the mold and is devoid of dead spots, so that the mold sidewall is heated by the steam to an essentially uniform surface temperature. For ease of fabrication, the platen may be formed as two separate pieces, i.e., a main body portion with encompasses the first flat wall, the inside and outside cylindrical walls, and the partitions, and a flat cover plate which is welded with a steam tight fit to the main body portion so as to enclose the passages and form a steam cavity.
REFERENCES:
patent: 1469747 (1923-10-01), Winter
patent: 1544002 (1925-06-01), Grove
Flory Thomas A.
Scantland Joe F.
Hart Charles
Scantland Industries Inc.
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