Die structure for forming a serrated rod

Details Die structure for forming a serrated rod Die structure for forming a serrated rod

1975-02-06

1976-06-01

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

Core, pin or insert member

72274, 72467, B29C 2300

Patent

active

039604730

ABSTRACT:
A pultrusion die for forming elongated, serrated, fiber-reinforced articles is disclosed. The die comprises a die block having a cylindrical cavity therethrough and a plurality of cylindrical rods arranged in a cylindrical array about the sidewall of the cavity. Each rod contacts two adjacent rods at parallel lines of contact which are located along the length of each rod and which define inwardly facing cylindrical arcs of less than 180.degree. so that the rods lock each other against nonaxial movement. The inwardly facing arcs together define a serrated die cavity.

REFERENCES:
patent: 1398412 (1921-11-01), Barkschat
patent: 3509427 (1970-04-01), Perrone et al.

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