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:
Feb. 19, 2013
Filed:
Apr. 09, 2010
Soshi Miyahara, Tokyo, JP;
Hideo Saito, Tokyo, JP;
Toshiaki Kadono, Tokyo, JP;
Masahiko Yoshino, Tokyo, JP;
Takashi Sakuyama, Tokyo, JP;
Tsutomu Togashi, Tokyo, JP;
Kazuhiro Tani, Tokyo, JP;
Eri Kameda, Tokyo, JP;
Futoshi Nakamura, Tokyo, JP;
Soshi Miyahara, Tokyo, JP;
Hideo Saito, Tokyo, JP;
Toshiaki Kadono, Tokyo, JP;
Masahiko Yoshino, Tokyo, JP;
Takashi Sakuyama, Tokyo, JP;
Tsutomu Togashi, Tokyo, JP;
Kazuhiro Tani, Tokyo, JP;
Eri Kameda, Tokyo, JP;
Futoshi Nakamura, Tokyo, JP;
THK Co., Ltd., Tokyo, JP;
Abstract
A rolling-element screw device includes: a large number of rolling elements; a screw shaft having an outer periphery on which a rolling groove for the large number of rolling elements is helically formed; a nut member which has a through-hole through which the screw shaft is passed and which is threadedly engaged with the screw shaft through intermediation of the large number of rolling elements; a lubricant supply hole formed through the nut member from an outer peripheral surface of the nut member to an inner peripheral surface of the nut member; a lubricant tank mounted to the outer peripheral surface of the nut member and comprising an accommodating chamber for lubricant; and a lubricant applying body standing from the lubricant tank, and inserted into the lubricant supply hole along with amounting operation of the lubricant tank with respect to the nut member.