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:
Oct. 07, 2025
Filed:
Aug. 04, 2023
Mitutoyo Corporation, Kanagawa, JP;
Hisayoshi Sakai, Kanagawa, JP;
Tsutomu Ugajin, Tochigi, JP;
MITUTOYO CORPORATION, Kawasaki, JP;
Abstract
A dustproof seal structure includes a rotor assembly and a stator assembly rotatably supporting the rotor assembly. The stator assembly forms a horizontal thrust aerostatic bearing between a lower surface of the thrust plate and an upper surface of the stator assembly when compressed air is supplied between the lower surface of the thrust plate and the upper surface of the stator assembly. The thrust plate and the stator assembly form a sealing portion through which the compressed air flows. The sealing portion includes an inclined flow path whose height increases from an outer peripheral surface of the thrust plate toward the inside in a radial direction.