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. 08, 2021
Filed:
Oct. 23, 2019
Fanuc Corporation, Yamanashi, JP;
Masahiro Murota, Yamanashi-ken, JP;
FANUC CORPORATION, Yamanashi, JP;
Abstract
A spindle device includes a spindle shaft, a spindle housing, and a chuck portion as a rotating member. The chuck portion has, formed therein, a suctioning passage through which air suctioned from the outside flows. The spindle shaft has a first guide passage which guides air flowing through the suctioning passage to a clearance between the inner wall of the spindle housing defining a through hole in which the spindle shaft is inserted and the outer wall of the spindle shaft facing the inner wall, by way of the interior of the spindle shaft. The spindle housing has, formed therein, a second guide passage configured to guide the air guided to the clearance, to the outside.