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:
Aug. 16, 2016
Filed:
Jul. 25, 2011
Yoshiyuki Sakaguchi, Urayasushi, JP;
Akihiro Ito, Funabashi, JP;
Akihiko Wada, Funabashi, JP;
Edwards Japan Limited, Chiba, JP;
Abstract
Provided is an exhaust pump that comprises connecting opening portions that can be deburred easily and that are suitable for enhancing gas evacuation performance. A rotor (a cylindrical rotating member) of an exhaust pump comprises a plate body that has a ring-like projection on a reverse side outer peripheral section of the rotor, and a cylindrical body that is fitted into an outer periphery of the ring-like projection. Connecting opening portions of the exhaust pump comprise holes that are formed by notching an outer peripheral section of the plate body and an outer peripheral section of the ring-like projection, and a portion (specifically, a hole) of the holes that opens in the form of a horizontal hole is covered by an outer-peripheral upper end portion of the cylindrical body.