Belt sleeve manufacturing method and apparatus

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

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156138, 156140, 264324, 264325, 425 28B, 425 40, 425 47, 425395, 425DIG5, B29C 114, B29C 116, B29D 2902

Patent

active

045101132

ABSTRACT:
A method and apparatus for forming belt sleeves having grooves provided in either or both of the inner and outer surfaces thereof. The manufacture includes the provision of a preform laminate on an inner mold and the forcible urging of a constrictable outer mold radially against the laminate at elevated temperatures so as to effect curing of the rubber of the laminate in accurate conformity to the grooved configuration of the inner and outer molds. The entire assembly is carried on a central support post. Pressure plates are provided for urging the constrictable outer mold radially inwardly as the result of threaded advance of nuts on the central post. The grooves in the mold surfaces may selectively be arranged to extend parallel or circumferentially of the central axis of the post as desired to form either longitudinally or transversely extending ribs, grooves, etc., in the formed sleeve belt.

REFERENCES:
patent: 2381395 (1945-08-01), Brown
patent: 2812008 (1957-11-01), Bright
patent: 3505447 (1967-02-01), Billes
patent: 3645655 (1972-02-01), Beneze
patent: 3897291 (1975-07-01), Hoback et al.
patent: 3934968 (1976-01-01), Cicognani
patent: 4106966 (1978-08-01), Brooks

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