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:
Jun. 26, 2001
Filed:
Aug. 02, 1999
Naomi Shirasawa, Nagano-ken, JP;
Harmonic Drive Systems, Inc., , JP;
Abstract
A silk hat flexible engagement gear device (,) has first and second end plates (,) and an input shaft (,) is rotatably supported, with their ends supported, between the tow end plates. An annular body (,) of a silk hat flexible external gear (,) is disposed on the outer circumference of the input shaft (,). A cross roller bearing (,) and a rigid internal gear (,) which also function as a device housing are arranged on the outer circumference. An cylindrical boss (,) of the flexible external gear is held between the outer race (,) of the cross roller bearing and the second end plate (,) and these three members are coupled with one another by means of second fixing bolts (,). An additional member which is used as a device housing is not necessary. The members are temporarily fixed and fastened and, further, attached to a housing on the motor side or on the load side by the fixing bolts (,). Therefore, the number of components of the device can be reduced, whereby making the device small and compact.