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. 13, 2026
Filed:
Apr. 07, 2023
Pfeiffer Vacuum, Annecy, FR;
Éric Mandallaz, Annecy Cedex, FR;
Patrick Philippe, Annecy Cedex, FR;
PFEIFFER VACUUM, Annecy, FR;
Abstract
A dry vacuum pump includes at least one purge duct having two channels which are provided in the thickness of an interstage transverse half-wall of a half-shell. Each channel opens from a front face of the interstage transverse half-wall via a respective opening into the interior space of a pumping stage. A transverse groove is provided in the interstage transverse half-wall at a joining surface of the half-shells. The channels are made up of tubular ducts which are formed between an inclined plane of the transverse groove and the front face.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile