The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 1998
Filed:
Aug. 02, 1996
Ikuo Asai, Nagoya, JP;
Abstract
A mold for molding a substrate of a disk, including a stationary and a movable mold half which are movable relatively to each other, a positioning ring portion on the movable mold half, for positioning an annular stamper at its center hole, and an ejector sleeve located radially inwardly of the positioning ring portion and movable to remove the substrate from the movable mold half. The ejector sleeve includes a recessing end portion which extends in an axial direction thereof beyond an end face of the positioning ring portion into the mold cavity when the stationary and movable mold halves are placed in the closed position. The recessing end portion has an outer circumferential surface which is perpendicular to the end face of the positioning ring portion, so that an annular recess partly defined by a circumferential shoulder surface is formed by the recessing end portion of the ejector sleeve. The circumferential shoulder surface is formed by the outer circumferential surface of the recessing end portion.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile