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:
Dec. 13, 1994
Filed:
Apr. 19, 1993
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
A print head of a wire-dot printer and a production method thereof, in which superhard chips are attached to contact surfaces of an armature and a core by brazing. The superhard chips can be readily secured to the contact surfaces of the armature and the core and are hardly worn by repeated impacts between the armature and the core which makes it possible to maintain the initial print quality for a long time and to obtain excellent abrasion resistance and strength of the contact surfaces in comparison with a conventional superhard film. It is not necessary to perform a grinding processing of the superhard chips with high accuracy after deposition thereof, and thus the thickness of the superhard chips can be readily controlled. As a result, production cost of the print head can be reduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile