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:
Jul. 23, 2002
Filed:
Jan. 02, 2002
Applicant:
Inventor:
Yoichi Hayashi, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 2/3027 ;
U.S. Cl.
CPC ...
G11B 2/3027 ;
Abstract
A magnetic tape cartridge has a reel which includes an upper reel and a lower reel which are plastic moldings, the lower reel being welded to the upper reel by ultrasonic welding. In the shoulder of a boss section of the upper reel, a plurality of recesses are formed in such a manner that the recesses are radially outwardly extended from the center of rotation of the upper reel, and on the surface of the lower reel which are confronted with the recesses, a plurality of welding ribs are formed so as to be engaged with the bottoms of the recesses.