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:
Aug. 17, 2021
Filed:
Aug. 23, 2018
Daihen Corporation, Osaka, JP;
Nikon Corporation, Tokyo, JP;
Nan Jiang, Osaka, JP;
Hiroshi Nakagiri, Osaka, JP;
Kota Hoshijima, Osaka, JP;
Kenji Omata, Utsunomiya, JP;
DAIHEN CORPORATION, Tokyo, JP;
Abstract
A driving apparatus has a problem in that during the maintenance operation, foreign matter moves from the tip end side of an input shaft into a hollow space. Therefore, a driving apparatus includes an input shaft with a hollow space formed therein, the hollow space penetrating therethrough in the axial direction, a motor that rotates the input shaft, a reduction gear that receives the power of the motorfrom the input shaft, an output shaft inserted through the hollow space of the input shaft and adapted to rotate about the rotation axis with power output from the reduction gear, and a detector that detects information on the rotation of the input shaft and the output shaft. A limiting member, which limits the movement of foreign matter into the hollow space of the input shaft from one side to the other side of the motor, is arranged in the hollow space between the input shaft and the output shaft.