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:
Jan. 22, 2008
Filed:
Jul. 07, 2004
Bruce M. Harper, San Jose, CA (US);
Christopher H. Bajorek, Los Gatos, CA (US);
Bruce M. Harper, San Jose, CA (US);
Christopher H. Bajorek, Los Gatos, CA (US);
Komag, Inc., San Jose, CA (US);
Abstract
A press system that reduces contamination of workpieces and/or compliant members used in die assemblies of the press from the pressing process. The die assemblies may utilize annular or hole-less stampers in which the compliant member is sealed in the die assembly. The compliant member may have be annular having a cavity at approximately its center. A gap may be generated at the cavity of the compliant member between a constraint member and the stamper. The gap, for example, may be filled with a plug to prevent significant distortion of the stamper over a hole of a disk shaped workpiece due to the pressure induced force generated by the press system. An outer diameter ring surrounding a workpiece may be used to prevent collapse of the stampers outside the diameter of the workpiece to insure uniform pressing out to the outer diameter of the workpiece.