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:
May. 06, 2025
Filed:
Apr. 07, 2020
Applicant:
Technical Manufacturing Corporation, Peabody, MA (US);
Inventor:
Igor Kordunsky, Quincy, MA (US);
Assignee:
Technical Manufacturing Corporation, Peabody, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 13/00 (2005.12); H01F 7/20 (2005.12);
U.S. Cl.
CPC ...
H01F 13/006 (2012.12); H01F 7/20 (2012.12);
Abstract
Apparatus and methods to reduce unwanted magnetic fields and unwanted motion in precision instruments are described. A coil assembly that is used to generate an opposing magnetic field can include a first coil configured to generate a static magnetic field and a second coil configured to generate a time-varying magnetic field. The first and second coils can be in close proximity and sized to suppress magnetic fields over a large localized region. The first coil can be connected to a choke to increase its impedance seen by the second coil.