JPS56168102A - Noncontacting type differential detector - Google Patents

Noncontacting type differential detector

Info

Publication number
JPS56168102A
JPS56168102A JP15950080A JP15950080A JPS56168102A JP S56168102 A JPS56168102 A JP S56168102A JP 15950080 A JP15950080 A JP 15950080A JP 15950080 A JP15950080 A JP 15950080A JP S56168102 A JPS56168102 A JP S56168102A
Authority
JP
Japan
Prior art keywords
core
around
type differential
coil
differential detector
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.)
Pending
Application number
JP15950080A
Other languages
Japanese (ja)
Inventor
Takeshi Araya
Tsugio Udagawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15950080A priority Critical patent/JPS56168102A/en
Publication of JPS56168102A publication Critical patent/JPS56168102A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE: To ensure a detection even for a small extent of displacement, by winding a primary coil for energizing directly around a core.
CONSTITUTION: A primary coil 9 for energizing made of heat resistant enamel wire is wound directly around a core 8 fixed to a detector main body 7 or after winding an extremely thin paperlike substance around the core. A secondary coil 11 is wound differentially around the coil 9. In such constitution, even a small extent of displacement can be detected for a material 12 to be examined.
COPYRIGHT: (C)1981,JPO&Japio
JP15950080A 1980-11-14 1980-11-14 Noncontacting type differential detector Pending JPS56168102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15950080A JPS56168102A (en) 1980-11-14 1980-11-14 Noncontacting type differential detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15950080A JPS56168102A (en) 1980-11-14 1980-11-14 Noncontacting type differential detector

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP7530474A Division JPS516050A (en) 1974-07-03 1974-07-03 HISETSUSHOKUSHIKI SADOGATAKENSHUTSUKI

Publications (1)

Publication Number Publication Date
JPS56168102A true JPS56168102A (en) 1981-12-24

Family

ID=15695119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15950080A Pending JPS56168102A (en) 1980-11-14 1980-11-14 Noncontacting type differential detector

Country Status (1)

Country Link
JP (1) JPS56168102A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993022110A1 (en) * 1992-05-01 1993-11-11 L. Engineering Co., Ltd. Safety apparatus
US5428279A (en) * 1992-05-01 1995-06-27 Noboru Sugimoto Safety apparatus determining whether a detected presence is a work piece or a human

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993022110A1 (en) * 1992-05-01 1993-11-11 L. Engineering Co., Ltd. Safety apparatus
US5428279A (en) * 1992-05-01 1995-06-27 Noboru Sugimoto Safety apparatus determining whether a detected presence is a work piece or a human

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