US4048604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic core
Assignee: Individual
•
Filing: 1976-03-25
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Granted: 1977-09-13
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Expires: 1996-03-25
Abstract
Abstract The present invention refers to a magnetic core comprising flat magnetic plates superimposed and joined in order to constitute the toroidal form of the core, creating an internal space for the winding and a lateral air gap groove. There being assembled in the open space of the core or air gap, annulling it, an open hoop made of magnetic material having suitable dimensions, whose outer edge penetrates into the interior space of the winding in order thus to create a new internal air gap because the external diameter of the hoop is smaller than the internal diameter of the space available for the inductance coils. In this way a magnetic shunt is situated between the inductance coils in order to regulate their mutual inductance.
Inventors
- 👤 Francisco Arjona Vallet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:44
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/24; H01F27/245; H01F29/00; H01F29/08; H01F29/10; H01F30/00; H01F30/06; H01F30/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
An improved construction of an electric inductance apparatus, comprising flat magnetic plates joined together to form a toroidal core, said toroidal core having an internal compartment accommodating inductance coils and an annular air gap between said coils, the improvement resulting in enhanced regulation of the mutal inductance of said inductance coils by forming a magnetic shunt between said inductance coils, said improvement comprising: said flat magnetic plates being shaped to form a lateral air gap groove adjacent to and leading into said compartment within said toroidal core, and said compartment within said toroidal core being penetrated through said lateral air gap by an open hoop of magnetic material having a thickness of sufficient dimension to enable said open hoop to penetrate into said compartment with said throidal core, said open hoop, being positioned between said inductance coils within said compartment, and the external diameter of said open hoop being of sufficient dimension to penetrate into said compartment and into said annular air gap between said inductance coils while leaving an air gap between a wall of the internal compartment and the outer periphery of said hoop.
Claim 2
Dependent Claim
186 words
An improved construction of an electric inductance apparatus, comprising flat magnetic plates joined together to form a toroidal core, said toroidal core having an internal compartment accommodating inductance coils and an annular air gap between said coils, the improvement resulting in enhanced regulation of the mutal inductance of said inductance coils by forming a magnetic shunt between said inductance coils, said improvement comprising: said flat magnetic plates being shaped to form a lateral air gap groove adjacent to and leading into said compartment within said toroidal core, and said compartment within said toroidal core being penetrated through said lateral air gap by an open hoop of magnetic material having a thickness of sufficient dimension to enable said open hoop to penetrate into said compartment with said throidal core, said open hoop, being positioned between said inductance coils within said compartment, and the external diameter of said open hoop being of sufficient dimension to penetrate into said compartment and into said annular air gap between said inductance coils while leaving an air gap between a wall of the internal compartment and the outer periphery of said hoop.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |