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:
Apr. 05, 2005
Filed:
Jul. 11, 2003
Masaru Kobayashi, Nagano-ken, JP;
Yoshihiro Tanioka, Nagano-ken, JP;
Masaru Kobayashi, Nagano-ken, JP;
Yoshihiro Tanioka, Nagano-ken, JP;
Harmonic Drive Systems Inc., Tokyo, JP;
Harmonic Drive Aktiengesellschaft, Limburg Ad Lahn, DE;
Abstract
A rigid internal gearof the wave gear device is composed by integrating a tooth-forming ringformed with internal teeth, and a main gear ringinto a single body. The tooth-forming ringis manufactured from a ferrous or copper material that has superior strength and abrasion resistance, while the main gear ringis manufactured from a lightweight material, such as an aluminum alloy. The outer circumferential surface of the tooth-forming ringis aluminized to form a dispersed aluminum coatingbefore the tooth-forming ringis cast within the main gear ringso as to integrate the main gear ringand the tooth-forming ringBoth parts are reliably integrated so that a large amount of torque can be transmitted, whereby realizing a rigid internal gear that is lighter than conventional models.