DE3765997D1 - Kompass mit geringem magnetismus. - Google Patents

Kompass mit geringem magnetismus.

Info

Publication number
DE3765997D1
DE3765997D1 DE8787401006T DE3765997T DE3765997D1 DE 3765997 D1 DE3765997 D1 DE 3765997D1 DE 8787401006 T DE8787401006 T DE 8787401006T DE 3765997 T DE3765997 T DE 3765997T DE 3765997 D1 DE3765997 D1 DE 3765997D1
Authority
DE
Germany
Prior art keywords
compass
low magnetism
magnetism
low
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 - Fee Related
Application number
DE8787401006T
Other languages
English (en)
Inventor
Gilles Posseme
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Application granted granted Critical
Publication of DE3765997D1 publication Critical patent/DE3765997D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02—Magnetic compasses
    • G01C17/28—Electromagnetic compasses
    • G01C17/30—Earth-inductor compasses

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
DE8787401006T 1986-05-13 1987-04-30 Kompass mit geringem magnetismus. Expired - Fee Related DE3765997D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8606858A FR2598798B1 (fr) 1986-05-13 1986-05-13 Boussole faiblement magnetique

Publications (1)

Publication Number Publication Date
DE3765997D1 true DE3765997D1 (de) 1990-12-13

Family

ID=9335172

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787401006T Expired - Fee Related DE3765997D1 (de) 1986-05-13 1987-04-30 Kompass mit geringem magnetismus.

Country Status (5)

Country Link
US (1) US4774766A (de)
EP (1) EP0246138B1 (de)
CA (1) CA1288241C (de)
DE (1) DE3765997D1 (de)
FR (1) FR2598798B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69218233T2 (de) * 1991-11-08 1997-09-25 Precision Navigation Inc Referenzzeiger für eine kompassanzeigeeinrichtung
US5383280A (en) * 1992-11-20 1995-01-24 Mcdermott; Kevin Direction indicator for navigation
FR2726246B1 (fr) * 1994-10-28 1996-11-29 Thomson Csf Procede et systeme de destruction d'objets sous-marins, notamment de mines sous-marines
CN104141886B (zh) * 2013-05-09 2017-02-01 深圳市海洋王照明工程有限公司 手电筒

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3355705A (en) * 1967-11-28 Electronic directional error indicating system
GB1310302A (en) * 1970-05-26 1973-03-21 Space Age Electronics Ltd Apparatus for generating a signal representative of the heading angle of a body
US3802088A (en) * 1971-06-14 1974-04-09 Us Navy Guidance system for underwater swimmers
US3853089A (en) * 1972-06-05 1974-12-10 B Howard Course selector and indicator
US3888201A (en) * 1973-10-29 1975-06-10 Scient Drilling Controls Auto-pilot
CA1065454A (en) * 1976-06-01 1979-10-30 Lorne A. Kuehn Spatial orientation device
US4104803A (en) * 1977-01-03 1978-08-08 Hoeppel Raymond W Direction finding device and guidance system
US4255866A (en) * 1979-10-30 1981-03-17 The United States Of America As Represented By The Secretary Of The Navy Nonmagnetic compass
GB2107057B (en) * 1981-08-03 1985-01-03 Brookes & Gatehouse Suspension system
US4503621A (en) * 1982-12-08 1985-03-12 The Laitram Corporation Solid state compass

Also Published As

Publication number Publication date
EP0246138B1 (de) 1990-11-07
US4774766A (en) 1988-10-04
FR2598798B1 (fr) 1991-09-20
EP0246138A1 (de) 1987-11-19
FR2598798A1 (fr) 1987-11-20
CA1288241C (fr) 1991-09-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee