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:
Mar. 01, 1983
Filed:
Jul. 15, 1980
Akio Mitsuishi, Shiojiri, JP;
Kabushiki Kaisha Suwa Seikosha, Tokyo, JP;
Shinshu Seiki Kabushiki Kaisha, Nagano, JP;
Abstract
An improved wire dot print head assembly for a wire dot printer including a resilient securing spring for holding the assembly elements secure is provided. The print head assembly includes a plurality of print wires, each selectively driven through a print nose by a plurality of electromagnets disposed about the print wires. A pivotable operating member engaged to the input end of the wire is actuated by an electromagnet with the fulcrum end of the operating member secured by a holding member. The holding member, nose, electromagnet and operating member are compressively retained by the resilient securing spring. The holding member is formed with a projection extending through the fulcum portion of the operating member to minimize magnetic reluctance of the magnetic flux by minimizing an air gap between a plunger mounted on the operating member and a yoke plate. The print head constructed in accordance with the invention permits improved dimensional accuracy in a simplified construction.