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:
Feb. 06, 2001
Filed:
Jun. 15, 1999
Naomi Shirasawa, Nagano-ken, JP;
Harmonic Drive Systems, Inc., Tokyo, JP;
Abstract
A cup-type wave gear device,comprises a cup-shaped flexible external gear,which has a boss,formed at its outer circumferential surface with an external thread,. An output shaft,is formed on Its end surface with an annular recess whose inner circumferential surface is formed with an internal thread,. The external thread,of the boss,is screwed into the internal thread,of the output shaft,. Further, driving pins,are used to fasten the boss,to the output shaft,. Whereby, the flexible external gear,is fixedly connected to the output shaft,The fastening torque between the boss and the output shaft can be increased in comparison with the conventional case where fastening bolts are used to connect these parts.