JPS51118996A - Material detector - Google Patents

Material detector

Info

Publication number
JPS51118996A
JPS51118996A JP4470375A JP4470375A JPS51118996A JP S51118996 A JPS51118996 A JP S51118996A JP 4470375 A JP4470375 A JP 4470375A JP 4470375 A JP4470375 A JP 4470375A JP S51118996 A JPS51118996 A JP S51118996A
Authority
JP
Japan
Prior art keywords
material detector
detector
failured
rise
reliability
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.)
Granted
Application number
JP4470375A
Other languages
Japanese (ja)
Other versions
JPS5811672B2 (en
Inventor
Mitsuru Yoda
Iwao Mochizuki
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.)
Nippon Signal Co Ltd
Original Assignee
Nippon Signal Co 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 Nippon Signal Co Ltd filed Critical Nippon Signal Co Ltd
Priority to JP50044703A priority Critical patent/JPS5811672B2/en
Publication of JPS51118996A publication Critical patent/JPS51118996A/en
Publication of JPS5811672B2 publication Critical patent/JPS5811672B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Switches Operated By Changes In Physical Conditions (AREA)
  • Burglar Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

PURPOSE: To rise the reliability of the device by making it possible to detect material with other element even if one element is failured.
COPYRIGHT: (C)1976,JPO&Japio
JP50044703A 1975-04-11 1975-04-11 butsutaikenchisouchi Expired JPS5811672B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50044703A JPS5811672B2 (en) 1975-04-11 1975-04-11 butsutaikenchisouchi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50044703A JPS5811672B2 (en) 1975-04-11 1975-04-11 butsutaikenchisouchi

Publications (2)

Publication Number Publication Date
JPS51118996A true JPS51118996A (en) 1976-10-19
JPS5811672B2 JPS5811672B2 (en) 1983-03-04

Family

ID=12698763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50044703A Expired JPS5811672B2 (en) 1975-04-11 1975-04-11 butsutaikenchisouchi

Country Status (1)

Country Link
JP (1) JPS5811672B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5851387U (en) * 1981-09-30 1983-04-07 オーテック電子株式会社 light beam warning device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS425455Y1 (en) * 1966-09-10 1967-03-18
JPS4810929U (en) * 1971-06-25 1973-02-07
JPS4922860U (en) * 1972-05-29 1974-02-26

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS425455Y1 (en) * 1966-09-10 1967-03-18
JPS4810929U (en) * 1971-06-25 1973-02-07
JPS4922860U (en) * 1972-05-29 1974-02-26

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5851387U (en) * 1981-09-30 1983-04-07 オーテック電子株式会社 light beam warning device

Also Published As

Publication number Publication date
JPS5811672B2 (en) 1983-03-04

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