Plant for forming predetermined quantities of synthetic...

Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock...

Reexamination Certificate

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Details

C425S114000, C425S261000, C425S449000, C425S572000, C264S328120

Reexamination Certificate

active

07001168

ABSTRACT:
Plant for forming predetermined quantities of synthetic material comprising a rotary turntable carrying on its periphery a plurality of dispensing devices, and means for feeding the material in the molten state to said dispensing devices; the plant also comprises a fixed part directly connected to the molten material feed, a rotary sealed joint connecting said fixed part to the rotary turntable, operating means for interacting with the dispensing devices positioned on the rotary turntable to operate them in the sense of opening and closing them in response to the rotations of the turntable, and means for rotating the turntable.

REFERENCES:
patent: 2808859 (1957-10-01), Heinzelman et al.
patent: 3102304 (1963-09-01), Divers
patent: 3355763 (1967-12-01), Willert
patent: 4412797 (1983-11-01), Murayama
patent: 5186956 (1993-02-01), Tanino et al.
patent: 5190769 (1993-03-01), Murayama
patent: 5786079 (1998-07-01), Alieri
patent: 6402504 (2002-06-01), Hahn et al.
patent: 1599221 (1990-10-01), None
Patent Abstracts of Japan; vol. 013, No. 462, “Alternate Type Injection Molding Machine”, Oct. 19, 1989.

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