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:
Nov. 14, 2006
Filed:
May. 28, 2004
Applicants:
Romina Silvia Gotta, Bosconero, IT;
Cinzia Del Missier, Turin, IT;
Cristian Maccarrone, Turin, IT;
Fausto Casaro, Turin, IT;
Inventors:
Romina Silvia Gotta, Bosconero, IT;
Cinzia Del Missier, Turin, IT;
Cristian Maccarrone, Turin, IT;
Fausto Casaro, Turin, IT;
Assignee:
Varian S.p.A., Leini Torino, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 1/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for manufacturing stators of vacuum pumps, and stators obtained thereby, wherein a plurality of stator discs or rings are formed, preferably by pressing, and then stator discs or rings are coaxially stacked and mutually rotated so as to form a stator surface having defined thereon at least one groove extending in substantially axial direction with respect to a body of the stator.