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. 06, 2025
Filed:
Oct. 27, 2020
Edwards Japan Limited, Chiba, JP;
Tooru Miwata, Chiba, JP;
Yoshiyuki Takai, Chiba, JP;
Edwards Japan Limited, Chiba, JP;
Abstract
A vacuum pump is provided, which is capable of preventing a water cooling spacer, which is one component of a casing, from being damaged by destruction of an interior component. The vacuum pump includes a casing having an inlet port, a stator column provided upright inside the casing, and a rotating body shaped to surround an outer periphery of the stator column, with gas being sucked in from the inlet port by rotation of the rotating body, wherein the casing is composed of a plurality of components including a water cooling spacer having a water cooling pipe disposed therein, and the water cooling spacer is made of an aluminum alloy casting material having an elongation of 5% or more as a mechanical material property.