GB1432969A - - Google Patents
Info
- Publication number
- GB1432969A GB1432969A GB3169773A GB3169773A GB1432969A GB 1432969 A GB1432969 A GB 1432969A GB 3169773 A GB3169773 A GB 3169773A GB 3169773 A GB3169773 A GB 3169773A GB 1432969 A GB1432969 A GB 1432969A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plates
- magnets
- permanent
- july
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0205—Magnetic circuits with PM in general
- H01F7/021—Construction of PM
Abstract
1432969 Permanent magnets H SPODIG 3 July 1973 [3 July 1972] 31697/73 Heading H1P A composite permanent bar magnet comprises a column of two or more permanent plate magnets of hard magnetic material, e.g. ferrite alternately assembled with intermediate plate magnets of highly permeable soft magnetic materials, e.g. soft iron in juxtaposition to form an easily magnetizable N-S bar magnet unit; the permeability and coercivity of the first material being respectively lower and higher than those of the second material. Specifically anisotropic barium oxide ferrite magnets are formed as square plates of similar cross-section interposed with soft iron plates and the pack has a central bore for securing into a unit. Alternatively the plates may be circular. Plural such columns may be combined into a single unit, with a ferromagnetic return path. Curves are given illustrating the magnetic performance for different magnetic materials and for different thicknesses of the component bars or plates.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2232613A DE2232613A1 (en) | 1972-07-03 | 1972-07-03 | METHODS FOR IMPROVING THE MAGNETIZATION BEHAVIOR, ESPECIALLY. ALL DIFFICULT AND VERY DIFFICULT MAGNETIZABLE PERMANENT MAGNETIC FERRO, FERRI MAGNET MATERIALS FOR ACHIEVING HIGH FLOW DENSITY B DEEP M (G) AND FIELD STRENGTH H DEEP M (OE) WHEN THE MAGNETIC IS USED AT THE SAME TIME, VERY SIGNIFICANTLY ONE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1432969A true GB1432969A (en) | 1976-04-22 |
Family
ID=5849574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3169773A Expired GB1432969A (en) | 1972-07-03 | 1973-07-03 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3889220A (en) |
| BE (1) | BE800919A (en) |
| CH (1) | CH566633A5 (en) |
| DE (1) | DE2232613A1 (en) |
| ES (1) | ES416435A1 (en) |
| FR (1) | FR2191227B1 (en) |
| GB (1) | GB1432969A (en) |
| IT (1) | IT988282B (en) |
| NL (1) | NL7309177A (en) |
| SE (1) | SE398020B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4114532A (en) * | 1976-10-12 | 1978-09-19 | Dataproducts Corporation | Impact printer magnet assembly |
| US4609109A (en) * | 1982-07-06 | 1986-09-02 | Cryogenic Consultants Limited | Superconducting magnetic separators |
| US4707663A (en) * | 1985-08-15 | 1987-11-17 | Fonar Corporation | Nuclear magnetic resonance apparatus using low energy magnetic elements |
| US4675609A (en) * | 1985-09-18 | 1987-06-23 | Fonar Corporation | Nuclear magnetic resonance apparatus including permanent magnet configuration |
| DE29515302U1 (en) * | 1995-09-25 | 1995-11-30 | Baermann Horst Rheinmagnet | Magnet arrangement |
| DE19628722A1 (en) * | 1996-07-17 | 1998-01-22 | Esselte Meto Int Gmbh | Device for deactivating a securing element for electronic article surveillance |
| JP5655071B2 (en) * | 2010-06-08 | 2015-01-14 | 株式会社日立製作所 | Linear motor |
| WO2017023303A1 (en) | 2015-08-05 | 2017-02-09 | Stren Microlift Technology, Llc | Hydraulic pumping system for use with a subterranean well |
| US10344573B2 (en) | 2016-03-08 | 2019-07-09 | Weatherford Technology Holdings, Llc | Position sensing for wellsite pumping unit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1098804A (en) * | 1953-03-26 | 1955-08-22 | Int Standard Electric Corp | Structure of traveling wave amplifiers |
| ES221304A1 (en) * | 1954-04-22 | 1955-06-01 | Philips Nv | Magnet system comprising two structurally identical parts |
| US2947921A (en) * | 1957-02-25 | 1960-08-02 | Brown & Sharpe Mfg | Fine grid permanent magnetic chuck |
| US3153177A (en) * | 1962-09-11 | 1964-10-13 | Ketcham And Mcdougall Inc | Magnetic holder for paper clips |
| US3535200A (en) * | 1967-09-18 | 1970-10-20 | Gen Motors Corp | Multilayered mechanically oriented ferrite |
-
1972
- 1972-07-03 DE DE2232613A patent/DE2232613A1/en not_active Withdrawn
-
1973
- 1973-06-14 BE BE132274A patent/BE800919A/en unknown
- 1973-06-25 IT IT51015/73A patent/IT988282B/en active
- 1973-06-26 US US372707A patent/US3889220A/en not_active Expired - Lifetime
- 1973-06-26 FR FR7323222A patent/FR2191227B1/fr not_active Expired
- 1973-06-28 ES ES416435A patent/ES416435A1/en not_active Expired
- 1973-07-02 NL NL7309177A patent/NL7309177A/xx not_active Application Discontinuation
- 1973-07-02 SE SE7309279A patent/SE398020B/en unknown
- 1973-07-03 CH CH969373A patent/CH566633A5/xx not_active IP Right Cessation
- 1973-07-03 GB GB3169773A patent/GB1432969A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3889220A (en) | 1975-06-10 |
| DE2232613A1 (en) | 1974-01-24 |
| NL7309177A (en) | 1974-01-07 |
| BE800919A (en) | 1973-10-01 |
| ES416435A1 (en) | 1976-03-01 |
| SE398020B (en) | 1977-11-28 |
| CH566633A5 (en) | 1975-09-15 |
| IT988282B (en) | 1975-04-10 |
| FR2191227A1 (en) | 1974-02-01 |
| FR2191227B1 (en) | 1976-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |