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. 07, 2017
Filed:
Jun. 25, 2013
Fasmatech Science & Technology SA, Athens, GR;
Dimitris Papanastasiou, Athens, GR;
Emmanuel Raptakis, Athens, GR;
Diamantis Kounadis, Athens, GR;
Alexander Lekkas, Athens, GR;
Ioannis Orfanopoulos, Athens, GR;
Ioannis K Nikolos, Ioannina, GR;
Other;
Abstract
A guide apparatus includes a vacuum compartment provided at a background pressure and having a gas inlet opening arranged for jetting a gas in the form of a free jet stream containing entrained ions into a vacuum chamber along a predetermined jetting axis. At least one duct housed within the vacuum chamber has a guide bore positioned coaxially with the jetting axis for receiving the free jet stream such that a supersonic free jet is formed in the duct with a jet pressure ratio P/Prestrained to a value that does not exceed (A/a)to form a subsonic laminar gas flow inside of the duct for guiding the entrained ions, where Pis the pressure at an exit end of the gas inlet opening, Pis the background pressure, A is the cross sectional area of the bore, and a is the cross sectional area of the gas inlet opening.