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:
Mar. 24, 2026
Filed:
Apr. 25, 2023
Applicant:
Pfeiffer Vacuum, Annecy, FR;
Inventor:
Nicolas Varennes, Annecy, FR;
Assignee:
PFEIFFER VACUUM, Annecy, FR;
Primary Examiner:
Int. Cl.
CPC ...
F04D 19/04 (2006.01); B33Y 80/00 (2015.01); F04D 29/02 (2006.01); F04D 29/38 (2006.01);
U.S. Cl.
CPC ...
F04D 19/042 (2013.01); F04D 29/023 (2013.01); F04D 29/384 (2013.01); B33Y 80/00 (2014.12); F05D 2240/301 (2013.01);
Abstract
A turbomolecular vacuum pump including a stator and a rotor designed to rotate in the stator. The rotor includes a hub and at least one blade stage including blades distributed regularly about the periphery of the hub. The blades of at least one blade stage of the rotor are hollow.