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. 10, 2009
Filed:
Apr. 09, 2004
Graeme Huntley, Nr Bridgwater, GB;
Neil Geoffrey Bellenie, Pleasanton, CA (US);
Graeme Huntley, Nr Bridgwater, GB;
Neil Geoffrey Bellenie, Pleasanton, CA (US);
Edwards Vacuum, Inc., Wilmington, MA (US);
Abstract
A load-lock and dry vacuum pump assembly includes a load-lock having a load-lock housing, the load-lock housing includes a mating system having a flange-like cylinder and a cylinder concentrically located relative to said flange-like cylinder; a dry vacuum pump that includes a shaft, a rotor, a first concentric cylinder and a second concentric cylinder extending outwardly from the rotor, and is integrally connected with the mating system, the first and second dry vacuum pump concentric cylinders, the flange-like cylinder, and the cylinder concentrically located relative to said flange being axially arranged with respect to the shaft; and a molecular drag compression stage formed by flanges having helical structures selectively provided on the first and second concentric cylinders, the flange-like cylinder, and the cylinder concentrically located relative to the flange. The first and second concentric cylinders spin relative to the flange-like cylinder and the cylinder concentrically located relative to the flange.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile