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:
Dec. 30, 2025
Filed:
Mar. 03, 2023
Edwards Japan Limited, Yachiyo, JP;
Shunsuke Takeda, Yachiyo, JP;
Edwards Japan Limited, Yachiyo, JP;
Abstract
Provided is a vacuum pump in which deformation of a peripheral part fastened to an outer cylinder can be prevented even when a count of bolts increases. A vacuum pump according to the present disclosure includes a rotating body, an outer cylinder that accommodates the rotating body, a peripheral part that is disposed on an outer perimeter side of the rotating body and concentrically with the outer cylinder, a plurality of bolts that fasten the outer cylinder and the peripheral part, and an axial force reducing means for reducing bolt axial force acting on the outer cylinder. The axial force reducing means is provided to at least one of the plurality of bolts.