Mold apparatus for forming screw threads

Details Mold apparatus for forming screw threads Mold apparatus for forming screw threads

2008-12-04

2010-12-07

Gupta, Yogendra N (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

C425S19200R, C425S438000, C425S441000, C425SDIG058

Reexamination Certificate

active

07845926

ABSTRACT:
A mold apparatus includes a female mold combined with a male mold. The female mold and male mold respectively include at least one female mold unit and one male mold unit, at least a pair of screw tooth blocks, a first fastener, and a second fastener. The female mold unit and the male mold unit respectively include a space with an opening and a through hole connecting with the space. The screw tooth block is mounted in the space. The screw tooth block includes an inserted concavity in a pair of opposite surfaces respectively and a through hole in the other opposite surfaces, the inserted concavity comprising an inner screw. The fastener, through the through hole of the mold unit and the through hole of the screw tooth block, fastens the screw tooth block in the space of the mold unit.

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