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:
May. 01, 2012
Filed:
Nov. 15, 2004
Takeki Shirai, Shinagawa-ku, JP;
Masashi Konomoto, Shinagawa-ku, JP;
Takeki Shirai, Shinagawa-ku, JP;
Masashi Konomoto, Shinagawa-ku, JP;
THK Co., Ltd., Tokyo, JP;
Abstract
An actuator has a hollow track railhaving a slitextending in an axial direction thereof, a movable blockdisposed inside the track railto be movable along the track rail, and a ball screw mechanism for moving the movable blockalong the axial direction of the track rail. The track rail has, in a section perpendicular to the axial direction of the track rail, a guide portionfor guiding movement of the movable memberand an extensionextending from the guide portionso as to cover the movable member, and a width Wof the slitof the track rail formed between the opposed extensionsis narrower than a width Wof the movable member. Accordingly, the actuator can provide a high rigidity in spite of compact outer dimension.