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:
Sep. 11, 2012
Filed:
Oct. 07, 2008
Soshi Miyahara, Tokyo, JP;
Toshiaki Kadono, Tokyo, JP;
Masahiko Yoshino, Tokyo, JP;
Takashi Sakuyama, Tokyo, JP;
Lina Teng, Tokyo, JP;
Tsutomu Togashi, Tokyo, JP;
Kazuhiro Tani, Tokyo, JP;
Soshi Miyahara, Tokyo, JP;
Toshiaki Kadono, Tokyo, JP;
Masahiko Yoshino, Tokyo, JP;
Takashi Sakuyama, Tokyo, JP;
Lina Teng, Tokyo, JP;
Tsutomu Togashi, Tokyo, JP;
Kazuhiro Tani, Tokyo, JP;
THK Co., Ltd., Tokyo, JP;
Abstract
There is provided a new rolling body screw device manufactured with cheap cost without degrading quality in comparison with a conventional device even for a device having any large dimension in an end-cap type rolling body screw device. The rolling body screw device includes the direction changing passageseach including: a scoop-up portionscooping a ball rolling in a loaded rolling body passage as a loaded area of the endless track so as to hand over the balls to the direction changing passageas a non-loaded area of the endless track; and a route pathforming a circulation path of the ball scooped by the scoop-up portion. Each of the return pieces is composed, in combination, of a metal partformed of a metal material including the scoop-up portion, and non-metal partsformed of a non-metal material including the route path