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:
Nov. 01, 2012
Ntn Corporation, Osaka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A bearing is interposed in the revolute pair between a proximal end side link hub and each proximal side end link member. A control device controls an actuator, to perform work-time control for causing a determined work operation to be executed and to perform, while the work-time control is stopped, grease circulation control for circulating grease sealed in the bearing. The maximum value θof a bending angle in the work-time control does not exceed the maximum allowable bending angle θ'being the maximum value of the bending angle allowable in the mechanism, and the maximum value of the bending angle in the grease circulation control is greater than the maximum value θof the bending angle in the work-time control and smaller than the maximum allowable bending angle θ′.