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US4562789A
Expired / Lapsed
US
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Arrangement for remote sweeping of mines sensitive to magnetic fields
Assignee: Fr Luerssen Werft GmbH and Co
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Filing: 1984-05-01
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Granted: 1986-01-07
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Expires: 2004-05-01
Abstract
Abstract An arrangement for sweeping mines having firing systems which are sensitive to magnetic fields is disclosed which utilizes a remote control mobile floating body with a built-in propulsion system. A magnetic field is generated within a group of permanent magnets located within the floating body in such a manner that these permanent magnets are either individually controlled or controlled as a group so that various types of magnetic field mines can be detected.
Inventors
- 👤 Wolfgang Bornhofft
- 👤 Gerhard Irenkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:28
CPC Classifications
B; B63; B63G; B63G7/00; B63G7/02; B63G7/06; B63G8/00; B63G8/001; B63G2008/002; B63G2008/004
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
171 words
A device for conducting mine sweeping operations for mines having ignition systems sensitive to magnetic fields, comprising: a self-drive remote control float for surface or undersea operations; a plurality of identical permanent magnets located in said float wherein each of said magnets are spaced apart from each other such that a main axis of each one of said magnets is parallel to the main axes of the others of said magnets and wherein said permanent magnets generate a magnetic field required for sweeping said mines; a plurality of rotation means respectively associated with each of said plurality of magnets for rotating each of said magnets about their respective main axis; and control means for the controlling of said plurality of rotating means of said magnets whereby said control means provides for said rotation means to cause a predetermined amount of rotation of said magnets about said main axis in correspondence with respective different ignition systems of mines which are being swept and the extent of the area which is being swept.
Claim 2
Independent Claim
171 words
A device for conducting mine sweeping operations for mines having ignition systems sensitive to magnetic fields, comprising: a self-drive remote control float for surface or undersea operations; a plurality of identical permanent magnets located in said float wherein each of said magnets are spaced apart from each other such that a main axis of each one of said magnets is parallel to the main axes of the others of said magnets and wherein said permanent magnets generate a magnetic field required for sweeping said mines; a plurality of rotation means respectively associated with each of said plurality of magnets for rotating each of said magnets about their respective main axis; and control means for the controlling of said plurality of rotating means of said magnets whereby said control means provides for said rotation means to cause a predetermined amount of rotation of said magnets about said main axis in correspondence with respective different ignition systems of mines which are being swept and the extent of the area which is being swept.
Claim 3
Dependent Claim
15 words
The device according to claim 1, wherein said plurality of permanent magnets are disc-shaped magnets.
Claim 4
Dependent Claim
31 words
The device according to claim 1, wherein said control means includes a means for programmed remote control of the direction of the magnetic field produced by each of said permanent magnets.
Claim 5
Dependent Claim
35 words
The device according to claim 1, wherein said control means further includes a means for changing the direction of the field of each of said permanent magnets while said device is conducting a sweeping operation.
Claim 6
Dependent Claim
43 words
The device according to claim 3, wherein said control means includes a means for controlling said plurality of rotation means when said sweeping operation is not taking place so that the external magnetic field produced by said plurality of permanent magnets is minimal.
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) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |