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
1985-08-02
1986-02-04
Flint, Jr., J. Howard
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...
425 28R, 425 46, B29H 502
Patent
active
045682593
ABSTRACT:
Disclosed is a tire mold for curing pneumatic tires wherein the mold includes a mold back, a tread ring and an insulator plate located between the mold back and the tread ring. The insulator plate is made of material that has a lower thermal conductivity than the thermal conductivity of the material in the mold back or tread ring. The addition of the insulator plate between the mold back and the tread ring induces reduction in heat transfer between the mold back and the tread ring allowing the maintenance of higher heat transfer for areas of the tire not shielded by the insulator plate and achieving the lower heat transfer in the area of the tire shielded by the insulator plate.
REFERENCES:
patent: 1914853 (1933-06-01), Grange
patent: 2509830 (1950-05-01), MacMillan
patent: 2581939 (1952-01-01), Deist et al.
patent: 3429005 (1969-02-01), MacMillan
patent: 3479693 (1969-11-01), Cantarutti
patent: 4446093 (1984-05-01), Mattson
patent: 4447193 (1984-05-01), Bartley et al.
Flint, Jr. J. Howard
McCann Philip P.
Pepper, Jr. Harry F.
The B. F. Goodrich Company
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