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.

Date of Patent:
Dec. 05, 1995

Filed:

Jul. 28, 1994
Applicant:
Inventors:

Seiichi Watanabe, Kanagawa, JP;

Tadashi Irie, Kanagawa, JP;

Naoyoshi Chino, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
2643281 ; 26432817 ;
Abstract

In a method for injection molding a plastic shutter for a magnetic disk cartridge, the shutter having windows corresponding to an opening formed in a magnetic disk cartridge and being substantially U-shaped in section, the diameter of an injection cylinder for injecting molten resin for forming the shutter is determined according to the following equation:


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