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:
Nov. 08, 2016
Filed:
Dec. 09, 2014
Nitta Corporation, Osaka, JP;
Yoji Ishizaki, Nara, JP;
Yoshiharu Kiyohara, Nara, JP;
Kenichiro Aoki, Nara, JP;
Katsuyuki Nakai, Nara, JP;
Yasuhiro Aoki, Nara, JP;
Toshihiko Kojima, Nara, JP;
Mitsuhiro Yamada, Nara, JP;
Takuya Taira, Nara, JP;
NITTA CORPORATION, Osaka, JP;
Abstract
A ball screw including: a male component having male grooves on an outer periphery for a ball to roll; a female component fitted together with the male component in an axial direction having female grooves facing the male grooves on an inner periphery for the ball to roll and a circulation path for the ball to circulate; and a seal member at one end, at the other end, or at each of one and the other ends of the female component in the axial direction and including a hole capable of communicating with the inner periphery, a fiber layer having a fitting surface having a convex part capable of being fitted in the male grooves when the male component is inserted into the hole and a surface made of fibers impregnated with rubber or resin, and a rubber or resin layer laminated on a surface opposite to the fitting surface.