Circumferential balanced flow passage

Details Circumferential balanced flow passage Circumferential balanced flow passage

1998-10-29

2000-10-24

Pyon, Harold

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Extrusion shaping means

425381, 425466, 425467, B29C 4722

Patent

active

061357502

ABSTRACT:
A diverter element is constructed of a generally cylindrical shape for insertion in an open cylindrical bore. A balanced flow passage is formed by the cooperation of grooves constructed on the outer surface of the diverter and the inner surface of the bore. A distribution groove is constructed in the diverter extending circumferentially about the diverter surface. First and second pairs of diverging grooves are constructed downstream of the distribution groove. The diverging grooves are separated by a dam which is shaped to restrict flow at the point of divergence of the grooves to encourage the plastic flow to divide and fill the diverging grooves while allowing reduced flow over the dam.

REFERENCES:
patent: 3947173 (1976-03-01), Dougherty
patent: 4365949 (1982-12-01), Nash
patent: 4548569 (1985-10-01), Pitigliano et al.
patent: 5183669 (1993-02-01), Guillemette
patent: 5667818 (1997-09-01), Guillemette
patent: 5780066 (1998-07-01), Guillemette

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