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:
Mar. 17, 2020
Filed:
Oct. 31, 2017
Shimadzu Corporation, Kyoto-shi, Kyoto, JP;
Takeshi Maji, Kyoto, JP;
Shunsuke Atsumi, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto-shi, Kyoto, JP;
Abstract
Provided is an aperture-plate moving mechanism, including: a drive blockfixed to an aperture plate; a linear motion guidefor allowing the drive block to move along an axis while preventing the drive block from moving in other directions; a feed screwlaid in a direction of the axis; a nut memberhaving a threaded hole engaged with the feed screw, the nut member being prevented from rotating due to a rotation of the feed screw; and an urging memberfor pressing the drive block onto the nut member in the direction of the axis. With respect to the direction of the axis, the contact portion of either the drive block or the nut member is a convex surface, while the contact portion of the other member is a concave surface having a larger radius of curvature than the convex surface.