GB2004069B - Metal detectors - Google Patents

Metal detectors

Info

Publication number: GB2004069B
Authority: GB; United Kingdom
Prior art keywords: metal detectors; detectors; metal
Prior art date: 1977-08-20
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

Application number

GB7832419A

Other versions

GB2004069A (en

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.)

GE Healthcare UK Ltd

Original Assignee

GE Healthcare UK Ltd

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.)

1977-08-20

Filing date

1978-08-07

Publication date

1982-04-21

1978-08-07 Application filed by GE Healthcare UK Ltd filed Critical GE Healthcare UK Ltd

1978-08-07 Priority to GB7832419A priority Critical patent/GB2004069B/en

1979-03-21 Publication of GB2004069A publication Critical patent/GB2004069A/en

1982-04-21 Application granted granted Critical

1982-04-21 Publication of GB2004069B publication Critical patent/GB2004069B/en

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
- G01V3/105—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils forming directly coupled primary and secondary coils or loops

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Remote Sensing (AREA)
Life Sciences & Earth Sciences (AREA)
Electromagnetism (AREA)
Environmental & Geological Engineering (AREA)
Geology (AREA)
General Life Sciences & Earth Sciences (AREA)
General Physics & Mathematics (AREA)
Geophysics (AREA)
Geophysics And Detection Of Objects (AREA)

GB7832419A 1977-08-20 1978-08-07 Metal detectors Expired GB2004069B (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
GB7832419A GB2004069B (en)	1977-08-20	1978-08-07	Metal detectors

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
GB3501477		1977-08-20
GB7832419A GB2004069B (en)	1977-08-20	1978-08-07	Metal detectors

Publications (2)

Publication Number	Publication Date
GB2004069A GB2004069A (en)	1979-03-21
GB2004069B true GB2004069B (en)	1982-04-21

Family

ID=26262543

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB7832419A Expired GB2004069B (en)	1977-08-20	1978-08-07	Metal detectors

Country Status (1)

Country	Link
GB (1)	GB2004069B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4427942A (en) *	1980-04-29	1984-01-24	Electrolocation Limited	Concealed electrical conductor detecting system
US4503392A (en) *	1981-07-21	1985-03-05	Rizhsky Politekhnichesky Institut	Apparatus for non-destructive testing of spot welds using an electromagnetic field
SE430545B (en) *	1982-04-01	1983-11-21	Asea Ab	DEVICE FOR THE DETECTION OF METAL FORMS IN A MATERIAL FLOW
FI79618C (en) *	1986-08-15	1990-01-10	Outokumpu Oy	SAETTING OVER ANORDINATION FOR DETECTING AV METALLKROPPAR.
ZA876706B (en) *	1986-09-08	1988-05-25	Candy Bruce Halcro	Method of discrimination detection using two frequencies
GB2241332A (en) *	1990-02-26	1991-08-28	Inzh Tsv N Isseledovatelskogo	Metalliferous objects detector
US5506506A (en) *	1992-01-14	1996-04-09	Halcro Nominees Pty Ltd.	Metal detector for detecting and discriminating between ferrous and non-ferrous targets in ground
DE19648834A1 (en) *	1996-11-26	1998-05-28	Foerster Inst Dr Friedrich	Method for operating and evaluating signals from an eddy current probe and device for carrying out the method
WO2003071311A1 (en) *	2002-02-19	2003-08-28	Radiodetection Limited	System and method for detecting a concealed current carrying conductor
US7649356B2 (en)	2002-12-18	2010-01-19	White's Electronics, Inc.	Pulse induction metal detector having high energy efficiency and sensitivity
GB2427474B8 (en) *	2005-06-20	2009-04-22	Radiodetection Ltd	A method of and apparatus for determining if a buried current carrying conductor is buried above a predetermined minimum depth
EP2439560B1 (en)	2010-10-07	2013-05-29	Mettler-Toledo Safeline Limited	Method for monitoring the operation of a metal detection system and metal detection system
EP2625551B1 (en)	2010-10-07	2016-11-09	Mettler-Toledo Safeline Limited	Method for operating a metal detection system and metal detection system
EP2439559B1 (en)	2010-10-07	2013-05-29	Mettler-Toledo Safeline Limited	Method for operating of a metal detection system and metal detection system
US9018935B2 (en)	2011-09-19	2015-04-28	Mettler-Toledo Safeline Limited	Method for operating a metal detection apparatus and apparatus

1978
- 1978-08-07 GB GB7832419A patent/GB2004069B/en not_active Expired

Also Published As

Publication number	Publication date
GB2004069A (en)	1979-03-21

Publication	Publication Date	Title
GB2029995B (en)	1982-10-20	Metal detectors
JPS5436961A (en)	1979-03-19	Angleeoffrotation detector
JPS53102070A (en)	1978-09-06	Detector
GB2041532B (en)	1983-05-11	Metal detector
HK1984A (en)	1984-01-13	Proximity detector
JPS5487247A (en)	1979-07-11	Detector
GB2004069B (en)	1982-04-21	Metal detectors
JPS53141081A (en)	1978-12-08	Detector
GB1540236A (en)	1979-02-07	Metal detectors
GB2000594B (en)	1982-03-24	Movement detector
JPS53108734A (en)	1978-09-21	Zero detector
JPS5439052A (en)	1979-03-24	Bissphosphine metal complex
JPS5471672A (en)	1979-06-08	Detector
JPS5436780A (en)	1979-03-17	Xxray detector
ZM7878A1 (en)	1979-07-19	Metal recovery
JPS53117457A (en)	1978-10-13	Metal detector
JPS53123186A (en)	1978-10-27	Xxray detector
JPS53114497A (en)	1978-10-05	Balanceeregulated circuit for metal detector
JPS5480149A (en)	1979-06-26	Detector
JPS5433075A (en)	1979-03-10	Mean value detector
JPS53107866A (en)	1978-09-20	Buried metal detector
JPS5399440A (en)	1978-08-30	Grounddfault detector
JPS5439654A (en)	1979-03-27	Angleeoffrotation detector
JPS5411774A (en)	1979-01-29	Peak value detector
JPS5411773A (en)	1979-01-29	Peak value detector

Legal Events

Date	Code	Title	Description
1990-08-29	732	Registration of transactions, instruments or events in the register (sect. 32/1977)
1993-04-07	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19920807