Patent ID: 8719852
Filing Date: 2014-05-06
Classification: G11B

Abstract:
1. A turntable for storage disk drive apparatuses, comprising: a plate member made of a ferromagnetic material, having an through hole with a periphery; and a central resin member integrally arranged at the center of the plate member and formed by injection-molding a resin, wherein the central resin member has an upper surface and a lower surface, the upper surface including a disk guide portion to guide a central hole of a disk, and the lower surface including a plurality of gate recess portions indented upwards, wherein the lower surface at the gate recess portions includes ceiling surfaces positioned higher than the plate member, the ceiling surfaces including a plurality of gate cut portions formed in an injection molding process, wherein the central resin member has a claw with an outer tip extended radially inside the periphery of the through hole.