Patent ID: 6343418
Filing Date: 2002-02-05
Classification: A01K,F16H,Y10T

Abstract:
A method for manufacturing a spinning reel face gear configured to have a tooth ring formed separately onto a disk, the method comprising steps of:forming a gear blank comprising a disk having circumferentially spaced outer peripheral indentations for unitarily retaining the tooth ring; setting the gear blank into a mold comprising a cavity plate having a cavity portion conforming to a reverse side of the disk and including a first circumferential margin for forming a reverse side of the tooth ring, and a core plate having a core portion conforming to an obverse side of the disk and including a second circumferential margin for forming an obverse side of the tooth ring, wherein mating the first and second circumferential margins constitutes a tooth-ring insert form; closing the mold and injecting into the tooth-ring insert form one selected from the group consisting of metal alloys and synthetic polymer resins; and opening the mold and ejecting the face gear for finishing, wherein no parting line is formed on the obverse face of the tooth ring.