GB1343556A - Static magnetic field metal detector - Google Patents

Static magnetic field metal detector

Info

Publication number
GB1343556A
GB1343556A GB4685372A GB4685372A GB1343556A GB 1343556 A GB1343556 A GB 1343556A GB 4685372 A GB4685372 A GB 4685372A GB 4685372 A GB4685372 A GB 4685372A GB 1343556 A GB1343556 A GB 1343556A
Authority
GB
United Kingdom
Prior art keywords
coil
oct
cutter
passage
signals
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
Application number
GB4685372A
Other languages
English (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.)
Unisys Corp
Original Assignee
Sperry Rand Corp
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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB1343556A publication Critical patent/GB1343556A/en
Expired legal-status Critical Current

Links

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
    • G01V3/107—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 using compensating coil or loop arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S56/00—Harvesters
    • Y10S56/15—Condition responsive

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Harvesting Machines For Root Crops (AREA)
GB4685372A 1971-10-29 1972-10-11 Static magnetic field metal detector Expired GB1343556A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19384671A 1971-10-29 1971-10-29

Publications (1)

Publication Number Publication Date
GB1343556A true GB1343556A (en) 1974-01-10

Family

ID=22715259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4685372A Expired GB1343556A (en) 1971-10-29 1972-10-11 Static magnetic field metal detector

Country Status (6)

Country Link
US (1) US3757501A (enrdf_load_stackoverflow)
CA (1) CA1001256A (enrdf_load_stackoverflow)
DE (3) DE2265809C2 (enrdf_load_stackoverflow)
FR (1) FR2158004B1 (enrdf_load_stackoverflow)
GB (1) GB1343556A (enrdf_load_stackoverflow)
IT (1) IT966496B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2946098A1 (de) * 1978-11-24 1980-06-04 Sperry Nv Erntemaschine
GB2055030A (en) * 1979-07-31 1981-02-18 Matsushita Electric Industrial Co Ltd Circuit for detecting a utensil load placed asymmetrically relative to an induction heating coil
WO2017205958A1 (en) * 2015-06-02 2017-12-07 Syncrude Canada Ltd. In Trust For The Owners Of The Syncrude Project As Such Owners Exist Now And In The Future Tramp metal detection

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757501A (en) * 1971-10-29 1973-09-11 Sperry Rand Corp Static magnetic field metal detector
US3896608A (en) * 1973-06-25 1975-07-29 Sperry Rand Corp Static magnetic field metal detector
US3959953A (en) * 1974-12-04 1976-06-01 Sperry Rand Corporation Apparatus to detect the passage of ferrous material in crop harvesting machines
DE2525042C2 (de) * 1975-06-05 1985-10-10 Maschinenfabrik Fahr Ag Gottmadingen, 7702 Gottmadingen Automatische Warneinrichtung an Landmaschinen
US3972156A (en) * 1975-02-24 1976-08-03 Sperry Rand Corporation Speed-independent static magnetic field metal detector
US4243980A (en) * 1978-02-17 1981-01-06 Lichtblau G J Antenna system for electronic security installations
US4198006A (en) * 1978-10-30 1980-04-15 Sperry Corporation Magnetic clearance sensor
US4205797A (en) * 1978-10-30 1980-06-03 Sperry Corporation Magnetic clearance sensor
US4359686A (en) * 1980-06-30 1982-11-16 Kenneth Wherry Metal detection apparatus with basket
US4344074A (en) * 1981-04-02 1982-08-10 Sperry Corporation Magnetic field producing apparatus
US4433528A (en) 1982-08-30 1984-02-28 Sperry Corporation Metal detector apparatus
US4531118A (en) * 1983-08-29 1985-07-23 Dickey-John Corporation Metal detector
CS239075B1 (en) * 1984-04-10 1985-12-16 Karel Stastny Metallic admixtures indication device in material
DE3825109A1 (de) * 1988-07-23 1990-02-01 Truetzschler & Co Vorrichtung zum abscheiden metallischer verunreinigungen aus einer fasertransportleitung in der spinnereivorbereitung
DE3903561A1 (de) * 1989-02-07 1990-08-09 Foerster Inst Dr Friedrich Verfahren und schaelmaschine zum schaelen eines holzstammes
DE4129882C2 (de) * 1990-09-17 2002-02-07 Truetzschler Gmbh & Co Kg Vorrichtung zum Abscheiden metallischer Verunreinigungen aus einer Fasertransportstrecke in der Spinnereivorbereitung
DE4140812A1 (de) * 1991-12-11 1993-06-17 Claas Saulgau Gmbh Vorrichtung zum erkennen von ferromagnetischen fremdkoerpern, insbesondere bei erntemaschinen
DE4331849C2 (de) * 1993-09-20 1998-07-09 Deere & Co Elektronischer Schaltkreis einer Elektromagnetkupplung
US5444966A (en) * 1994-02-03 1995-08-29 New Holland North America, Inc. Metal detection apparatus for agricultural harvester
US5504428A (en) 1994-09-16 1996-04-02 Deere & Company Magnetic metal detector mounted in a feed roll of a harvisting machine
US5600941A (en) * 1995-03-31 1997-02-11 New Holland North America, Inc. Compensation for start-up transients
US5600942A (en) * 1995-03-31 1997-02-11 New Holland North America, Inc. Adaptive thresholding for metal detection
US5670882A (en) * 1995-09-21 1997-09-23 Magnawand Inc. Ferrous target identification system with magnetic field polarity and gradient indication
DE19620526A1 (de) * 1996-05-22 1997-11-27 Burkhard Weis Metalldetektor zum Erkennen von Metall im Erntegutfluß
US7024839B2 (en) * 2001-10-11 2006-04-11 Paul Wingert Agricultural bagger with upper tunnel compaction and chute agitation
DE10332395A1 (de) * 2003-07-17 2005-02-24 Maschinenfabrik Bernard Krone Gmbh Erntemaschine
US7116107B2 (en) * 2004-09-10 2006-10-03 Abitibi Geophysics Inc. Transmitter loops in series for electromagnetic geophysical surveys
US20060168913A1 (en) 2005-01-31 2006-08-03 Wingert Paul R Agricultural bagger with dual rotor and/or variable-taper tunnel
DE102005005736A1 (de) * 2005-02-07 2006-09-28 Claas Selbstfahrende Erntemaschinen Gmbh Metalldetektionseinrichtung
US7575065B1 (en) 2008-07-31 2009-08-18 Garrett Electronics, Inc. Metal detector with excavation tool
US20100321021A1 (en) * 2009-06-23 2010-12-23 Jack Alexander Siegel Metal detection excavation apparatus and method
US9347798B1 (en) 2014-12-24 2016-05-24 Garrett Electronics, Inc. Metal detector with hermetic housing
CN104718878B (zh) * 2015-04-02 2017-07-18 江苏省农业机械技术推广站 一种秸秆收获粉碎还田机
US10677952B2 (en) * 2015-12-28 2020-06-09 Shenzhen Aoyadi Electronic Equipment Co., Ltd. Self-balance noise reduction metal detection double-coil
DE102017129778A1 (de) * 2017-12-13 2019-06-13 Claas Selbstfahrende Erntemaschinen Gmbh Feldhäcksler
EP4421538A1 (en) * 2023-02-24 2024-08-28 Mettler-Toledo Safeline Limited Metal detection apparatus with a test device and test device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7104999U (de) * 1971-06-24 Bautz J Gmbh Feldhäcksler
US2550688A (en) * 1949-03-19 1951-05-01 Rca Corp Metal detection apparatus
US3084495A (en) * 1962-01-26 1963-04-09 William S Blackerby Lawn mower having magnet attached
US3368214A (en) * 1965-03-10 1968-02-06 Swanson Spray & Mfg Inc Operating shaft indicators for crop harvesting machines
US3508238A (en) * 1966-07-18 1970-04-21 Texas Instruments Inc Intrusion detection system
US3646736A (en) * 1970-01-06 1972-03-07 Frank B Hutchins Attachment for a riding-type lawnmower
US3675660A (en) * 1971-05-03 1972-07-11 Massey Ferguson Ind Ltd Combine stone trap door
US3757501A (en) * 1971-10-29 1973-09-11 Sperry Rand Corp Static magnetic field metal detector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2946098A1 (de) * 1978-11-24 1980-06-04 Sperry Nv Erntemaschine
GB2055030A (en) * 1979-07-31 1981-02-18 Matsushita Electric Industrial Co Ltd Circuit for detecting a utensil load placed asymmetrically relative to an induction heating coil
US4447691A (en) * 1979-07-31 1984-05-08 Matsushita Electric Industrial Company, Limited Circuit for detecting a utensil load placed asymmetrically relative to an induction heating coil
WO2017205958A1 (en) * 2015-06-02 2017-12-07 Syncrude Canada Ltd. In Trust For The Owners Of The Syncrude Project As Such Owners Exist Now And In The Future Tramp metal detection
US10274630B2 (en) 2015-06-02 2019-04-30 Syncrude Canada Ltd. In Trust For The Owners Of The Syncrude Project As Such Owners Exist Now And In The Future Tramp metal detection

Also Published As

Publication number Publication date
US3757501A (en) 1973-09-11
IT966496B (it) 1974-02-11
DE2265809C2 (de) 1985-09-19
FR2158004A1 (enrdf_load_stackoverflow) 1973-06-08
CA1001256A (en) 1976-12-07
DE2265770C2 (de) 1987-01-29
DE2252595A1 (de) 1973-05-03
DE2252595C2 (de) 1986-02-20
FR2158004B1 (enrdf_load_stackoverflow) 1980-04-04

Similar Documents

Publication Publication Date Title
GB1343556A (en) Static magnetic field metal detector
GB1452549A (en) Agricultural machines having a tramp metal detector
EP0305013A3 (en) Inductive proximity sensor
GB1386506A (en) Distance measuring arrangement
GB1424072A (en) Magnetic bearings
CA2067076A1 (en) Inductive position indicator
ZA812518B (en) Contactless, electric control-handle
GB648964A (en) Improvements in or relating to apparatus for conditioning a magnetic record member
GB872941A (en) Apparatus for counting moving objects of electrically conducting material
GB1306207A (enrdf_load_stackoverflow)
GB1191930A (en) Arrangement for Contactless Measurement of Displacements
GB1086344A (en) Magnetometer orientation
US4788813A (en) Metal detection in the vicinity of ferrous boundaries
SE9000716L (sv) Skraemning av magnetoelastiska vridmomentgivare fraan laagfrekventa magnetfaelt
KR840006541A (ko) 핵연료 물질 제조에 있어서의 품질 제어장치
ES8201799A1 (es) Un transductor electroacustico
ES404010A1 (es) Dispositivo de ajuste para un sistema de propulsion elec- trico, especialmente para un sistema de propulsion de maqui-na de coser.
GB1533168A (en) Amplification system
GB1451005A (en) Sensors for detecting ferromagnetic objects
JPS649302A (en) Non-contact displacement detector
SU385630A1 (ru) Ё^СЕСОЮЗНАЯ^fr^JITHO-IEK'^B'^^^^^^
SU1746935A1 (ru) Способ обнаружени посторонних токопроход щих предметов в потоке технологического продукта уборочной сельскохоз йственной машины
GB1434227A (en) Non-contact inductive pickup for locaint the interface between two media
GB1429822A (en) Sewing machines
GB1195601A (en) Mineral Sorting Apparatus

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years