NL241715A - - Google Patents
Info
- Publication number
- NL241715A NL241715A NL241715DA NL241715A NL 241715 A NL241715 A NL 241715A NL 241715D A NL241715D A NL 241715DA NL 241715 A NL241715 A NL 241715A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/04—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings operated by hand
- H03J5/12—Settings determined by a number of separately-actuated driving means which adjust the tuning element directly to desired settings
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/024—Erasing
- G11B5/0245—Bulk erasing
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US752118A US3023280A (en) | 1958-07-30 | 1958-07-30 | Degaussing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL241715A true NL241715A (xx) |
Family
ID=25024952
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL110207D NL110207C (xx) | 1958-07-30 | ||
| NL241715D NL241715A (xx) | 1958-07-30 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL110207D NL110207C (xx) | 1958-07-30 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3023280A (xx) |
| BE (1) | BE581148A (xx) |
| CH (1) | CH364909A (xx) |
| DE (1) | DE1207963B (xx) |
| FR (1) | FR1230951A (xx) |
| GB (1) | GB871420A (xx) |
| NL (2) | NL241715A (xx) |
| SE (1) | SE301556B (xx) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1104202B (de) * | 1959-04-18 | 1961-04-06 | Agfa Ag | Wechselfeldloescheinrichtung fuer magnetische Speicher |
| GB1020522A (en) * | 1963-10-15 | 1966-02-16 | Amos Of Exeter Ltd | Bulk-tape eraser |
| US3506884A (en) * | 1967-03-29 | 1970-04-14 | Milton A Mckinley | Magnetic tape degaussing unit |
| US3660727A (en) * | 1968-10-16 | 1972-05-02 | Sony Corp | Bulk eraser with permanent magnet flux produced obliquely to cassette movement |
| DE2716587A1 (de) * | 1977-04-14 | 1978-10-19 | Siemens Ag | Vorrichtung zum loeschen der information auf tonbaendern von tonbandkassetten |
| US4346426A (en) * | 1981-01-07 | 1982-08-24 | Fluxcom, Inc. | Magnetic tape de-gausser and method of erasing magnetic recording tape |
| US4467389A (en) * | 1982-03-26 | 1984-08-21 | Christie Electric Corp. | Magnetic tape degausser and method of erasing magnetic recording tape |
| US4551782A (en) * | 1983-09-09 | 1985-11-05 | Rfl Industries, Inc. | Method and apparatus for degaussing magnetic storage media |
| US4672345A (en) * | 1985-09-24 | 1987-06-09 | Electro-Matic Products Co. | Degausser/demagnetizer |
| US4751608A (en) * | 1986-10-14 | 1988-06-14 | Data Security, Inc. | Bulk degausser |
| US4730230A (en) * | 1987-03-31 | 1988-03-08 | Dowty Rfl Industries, Inc. | Apparatus and method for degaussing magnetic storage media |
| DE3736024C1 (en) * | 1987-10-24 | 1989-03-23 | Agfa Gevaert Ag | Demagnetising device |
| US5721665A (en) * | 1995-08-18 | 1998-02-24 | Data Security, Inc. | Modulated magnet field bulk degaussing system |
| US5969933A (en) * | 1998-03-25 | 1999-10-19 | Data Security, Inc. | Transient magnet field degaussing system |
| US5959824A (en) * | 1998-03-25 | 1999-09-28 | Data Security, Inc. | Transient magnetic field degaussing system with auto calibration |
| US6731491B2 (en) | 2001-06-15 | 2004-05-04 | Data Security, Inc. | Bulk degausser with fixed arrays of magnet poles |
| US7164569B1 (en) | 2004-06-30 | 2007-01-16 | Data Security, Inc. | Mechanism for automated permanent magnet degaussing |
| US20060018075A1 (en) * | 2004-07-23 | 2006-01-26 | Data Security, Inc. | Permanent magnet bulk degausser |
| US7715166B2 (en) * | 2006-07-14 | 2010-05-11 | Data Security, Inc. | Method and reciprocating apparatus for permanent magnet erasure of magnetic storage media |
| US7701656B2 (en) * | 2006-07-14 | 2010-04-20 | Data Security, Inc. | Method and apparatus for permanent magnet erasure of magnetic storage media |
| US20090284890A1 (en) * | 2008-05-16 | 2009-11-19 | Thiel Leroy D | Mechanism and Method for Permanent Magnet Degaussing |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE652011C (de) * | 1937-10-23 | Siemens & Halske Akt Ges | Vorrichtung zum Vormagnetisieren von Magnetogrammtraegern bzw. zum Loeschen von Magnetogrammen | |
| DE673134C (de) * | 1937-02-19 | 1939-03-16 | Aeg | Einrichtung zum Entmagnetisieren des Loesch- und/oder Sprechkopfes |
| DE754413C (de) * | 1942-04-17 | 1952-10-27 | Lorenz C Ag | Loeschkopf fuer magnetische Tonaufzeichnungen |
| DE972166C (de) * | 1942-06-03 | 1959-05-27 | Telefunken Gmbh | Verfahren und Vorrichtung zum Loeschen eines Magnetogrammtraegers, der zu einer Spule gewickelt ist |
| GB667011A (en) * | 1950-02-03 | 1952-02-20 | Otto Kurt Kolb | Improved method of and apparatus for erasing signals from magnetic sound record carriers |
| GB769727A (en) * | 1953-12-31 | 1957-03-13 | Ibm | Magnetic tape erasing apparatus |
| US2846518A (en) * | 1955-10-05 | 1958-08-05 | Bell Telephone Labor Inc | Means for erasing a magnetic record |
-
0
- NL NL110207D patent/NL110207C/xx active
- NL NL241715D patent/NL241715A/xx unknown
-
1958
- 1958-07-30 US US752118A patent/US3023280A/en not_active Expired - Lifetime
-
1959
- 1959-07-08 GB GB23528/59A patent/GB871420A/en not_active Expired
- 1959-07-23 FR FR800970A patent/FR1230951A/fr not_active Expired
- 1959-07-24 DE DEA32545A patent/DE1207963B/de active Pending
- 1959-07-28 CH CH7629959A patent/CH364909A/fr unknown
- 1959-07-28 BE BE581148A patent/BE581148A/fr unknown
- 1959-07-30 SE SE7134/59A patent/SE301556B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE581148A (fr) | 1959-11-16 |
| NL110207C (xx) | |
| GB871420A (en) | 1961-06-28 |
| US3023280A (en) | 1962-02-27 |
| SE301556B (xx) | 1968-06-10 |
| FR1230951A (fr) | 1960-09-21 |
| CH364909A (fr) | 1962-10-15 |
| DE1207963B (de) | 1965-12-30 |