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. 10, 2012
Filed:
Oct. 17, 2007
Koichi Masuo, Ritto, JP;
Kazuyuki Ishizu, Ritto, JP;
Koichi Masuo, Ritto, JP;
Kazuyuki Ishizu, Ritto, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A backlash eliminator includes an input shaft () coupled to a driving motor () and having a drive gear (); an output shaft () fixing a gear (W), as an object to be cut, thereon, and having a driven gear (); and a stationary intermediate shaft () and a moving intermediate shaft () disposed parallel to the input shaft and the output shaft, and having large intermediate gears () meshing with the drive gear, and small intermediate gears () meshing with the driven gear, and a switching regulating valve () for pressing the moving intermediate shaft in its axial direction so that an output-side backlash elimination torque (Ts) between the driven gear and the small intermediate gear () acts in the same direction as the direction of generation of a cutting load torque (Tw) generated in the circumferential direction of the gear during machining of the gear.