Divisible slip-casting molds

Details Divisible slip-casting molds Divisible slip-casting molds

1989-10-30

1991-06-04

Housel, James C.

Plastic article or earthenware shaping or treating: apparatus

With foraminous or absorbent means for removal of vehicle or...

Vacuum means

249113, 249141, 264 87, 425 84, B28B 126

Patent

active

050209833

ABSTRACT:
A divisible slip-casting mold has filter layers which incorporate a combination of different types of fluid-flow conduits to improve the mechanical strength of the mold while providing the filter layers with substantially uniform fluid-flow properties. The conduits include major portions of blind holes installed in straight lines and minor portions of porous ropes arranged in curved lines. The porous ropes are essentially installed in those portions of the filter layer having a mechanical strength which is inferior to the predominant portions of the filter layer, and the blind holes are essentially installed in the predominant portions of the filter layer. Thus, improved mechanical strength and substantially uniform fluid-flow properties are provided substantially throughout the filter layers of the mold.

REFERENCES:
patent: 3156751 (1964-11-01), Valdes et al.
patent: 3286974 (1966-11-01), Dean et al.
patent: 3659994 (1972-05-01), Ehrlich
patent: 3993727 (1976-11-01), Skriletz et al.
patent: 4528152 (1985-07-01), Aoyama et al.
patent: 4591472 (1986-05-01), Gerster
patent: 4818457 (1989-04-01), Ito et al.
patent: 4867662 (1989-09-01), Shimahara et al.
patent: 4884959 (1989-12-01), Ito et al.

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