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:
Oct. 16, 1990
Filed:
Mar. 03, 1989
Applicant:
Inventors:
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ; B23K / ;
U.S. Cl.
CPC ...
228193 ; 228170 ; 400124 ;
Abstract
In a method of producing a movable part of a wire-dot print head comprising an armature supported by a plate spring, and a lever having a tip to which print wire is fixed, the armature and the lever are formed of alloys containing identical atoms or alloys easy to diffuse into each other, a bond part of a base part of the lever is inserted in a bond groove in a tip of the armature, and the lever and the armature are heat-treated in vacuum at a temperature not lower than 1100.degree. C. and below the melting points of the lever and the armature, so that the lever and the armature are diffusion-bonded.