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:
Nov. 06, 1979
Filed:
Mar. 14, 1978
Applicant:
Inventor:
Naotsune Tsuda, Hachioji, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
29603 ; 29418 ;
Abstract
A method of manufacturing a magnetic head comprises the steps of forming between a pair of core blocks to be joined together gap holding surfaces arranged relative to a gap forming surface, in the core blocks, such that gaps formed between the gap holding surfaces, within which spacers are placed, will be wider than the gap formed between the gap forming surfaces between which there is provided a molten gap forming material forming an effective magnetic gap in the finished head having a width of about 1.mu. by slightly permeating the molten gap forming material within the core block.