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:
Sep. 28, 2004
Filed:
Jul. 03, 2003
Tihiro Ohkawa, La Jolla, CA (US);
Archimedes Technology Group, Inc., San Diego, CA (US);
Abstract
A device for separating high mass to charge particles (M ) from low mass to charge particles (M ) in a plasma includes a cylindrical wall that surrounds a chamber and defines an axis. Rectangular shaped coils are mounted on the wall to establish a magnetic field, B , in the chamber that is aligned substantially perpendicular to the axis and which rotates about the axis. Circularly shaped coils are provided to generate a time-constant, axially aligned magnetic field, B , in the chamber. Passive, ring-shaped electrodes are positioned at the ends of the wall and connected to resistors which are then grounded. The rotating magnetic field, B , rotates the plasma in the axially aligned magnetic field, B , which in turn, induces a radially oriented electric field, E , in the chamber. The crossed fields (i.e. E ×B ) cause the particles, M , to strike the wall while the particles, M , transit through the chamber.