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:
Jul. 19, 2016
Filed:
May. 08, 2013
Harmonic Drive Systems Inc., Shinagawa-ku, JP;
Masaru Kobayashi, Azumino, JP;
Tatsuro Hoshina, Azumino, JP;
HARMONIC DRIVE SYSTEMS INC., Shinagawa-Ku, Tokyo, JP;
Abstract
A strain wave gearing () has a flexible externally toothed gear () with a boss (). A boss-side fastening surface () formed on the boss is coaxially superposed with a member-side fastening surface () of an output member (), and the boss () and the output member are fastened by fastening bolts (). The bolt tension of the fastening bolts () causes the engaging protuberances () of the boss-side fastening surface () to dig into the member-side fastening surface () by a predetermined dig-in depth. A large frictional force is produced in the fastening portions between the flexible externally toothed gear () and the output member (). It is thereby possible to transmit the necessary torque by the bolt tension alone without using pins or a friction sheet together with the fastening bolts.