Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1975-10-28
1977-09-20
Lowe, James B.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264269, 264275, 264277, 264303, 264310, 264311, 425435, B29C 504, B29H 1700
Patent
active
040497674
ABSTRACT:
Closed hollow toroidal articles such as hollow tires, which may be caused to be thickest at the tread, are molded on the inner surface of a closed toroidal mold slowly rotating on a horizontal axis by charging a fluid elastomer material in such quantity as to fill the bottom of the mold to a level above the wheel-supporting part of the tire and continuing rotation while causing the material to set to a solid elastomer progressively inwards from the liquid contacting surface of the mold. The relative thickness of different parts can be adjusted by changes in rotation, or by inducing different rates of setting in different parts of the mold.
REFERENCES:
patent: T948001 (1976-07-01), Smith
patent: T952006 (1976-11-01), Hanoch
patent: 2830325 (1958-04-01), Bray
patent: 2944814 (1960-07-01), Thoeming
patent: 3555141 (1971-01-01), Beneze
patent: 3645655 (1972-02-01), Beneze
patent: 3751551 (1973-08-01), McGillvary
Lowe James B.
Meyer Harold S.
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