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1. WO2020142157 - DEGAUSSING A MAGNETIZED STRUCTURE

Publication Number WO/2020/142157
Publication Date 09.07.2020
International Application No. PCT/US2019/064489
International Filing Date 04.12.2019
IPC
H01F 13/00 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
13Apparatus or processes for magnetising or demagnetising
H01F 27/36 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
34Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
36Electric or magnetic shields or screens
H01F 27/40 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
40Structural association with built-in electric component, e.g. fuse
CPC
H01F 13/006
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
13Apparatus or processes for magnetising or demagnetising
006Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material
H01F 27/36
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
34Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
36Electric or magnetic shields or screens
H01F 27/40
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
27Details of transformers or inductances, in general
40Structural association with built-in electric component, e.g. fuse
H01F 5/00
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
5Coils
Applicants
  • NORTHROP GRUMMAN SYSTEMS CORPORATION [US]/[US]
Inventors
  • CUBIAS, Victor M.
Agents
  • HARRIS, Christopher P.
Priority Data
16/238,36802.01.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DEGAUSSING A MAGNETIZED STRUCTURE
(FR) DÉMAGNÉTISATION D'UNE STRUCTURE AIMANTÉE
Abstract
(EN)
A system for degaussing a magnetized structure can include a given circuit that provides a differential alternating current (AC) signal that decays from an upper level to a lower level over a predetermined amount of time. The system also includes a given electrical coil coupled to the given circuit. The electrical coil circumscribes the magnetized structure. The electrical coil induces a decaying magnetic field on the magnetized structure in response to the differential AC signal to convert the magnetized structure into a degaussed structure.
(FR)
Un système de démagnétisation d'une structure aimantée peut comprendre un circuit donné qui fournit un signal de courant alternatif (CA) différentiel qui décroît d'un niveau supérieur à un niveau inférieur sur une durée prédéterminée. Le système comprend également une bobine électrique donnée couplée au circuit donné. La bobine électrique circonscrit la structure aimantée. La bobine électrique induit un champ magnétique décroissant sur la structure aimantée en réponse au signal CA différentiel pour convertir la structure aimantée en une structure démagnétisée.
Also published as
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