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. 15, 1981
Filed:
Aug. 27, 1979
Tosio Tomite, Katsuta, JP;
Nobuhiko Ogasawara, Mito, JP;
Hisanobu Kanamaru, Katsuta, JP;
Hideo Tatsumi, Mito, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A joining construction between a flywheel of a flywheel magneto and a boss for mounting thereon a shaft comprises a joining portion formed on the periphery of the boss, and a joining portion of the flywheel surrounding the periphery of the boss. The joining portion of boss has an annular groove defined by a rugged bottom and both sides one of which is inclined along metal flow. The joining portion of the flywheel has the same shaped groove as one of the boss. Two the joining portions define an annular gap in which a joining member is disposed deformed by pressworking. The joining member inserted into the annular gap has the same shearing strength as the flywheel when an axial force is applied to the flywheel magneto.