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:
May. 21, 2002
Filed:
Oct. 19, 2000
Applicant:
Inventors:
Maki Wakita, Tanashi, JP;
Katsutoshi Mukaijima, Tanashi, JP;
Shoji Takahashi, Tanashi, JP;
Yoshinori Katsumata, Tanashi, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 5/300 ;
U.S. Cl.
CPC ...
B21D 5/300 ;
Abstract
In a card-type magnetic recording device ( ), a motor ( ) for driving a magnetic disk stored therein is mounted in a recess ( ) that is formed in a frame plate ( ). In order to form the recess ( ) in the frame plate ( ), backward extrusion molding is effected by means of a die ( ) having a slope ( ) and a punch ( ) having a slope ( ). A region between the slope ( ) and the slope ( ) is crushed by means of the die ( ) and the punch ( ) that relatively move up and down, and extends backward as well as forward with respect to the moving direction of the punch.