AU8661891A - Safety circuits - Google Patents

Safety circuits

Info

Publication number
AU8661891A
AU8661891A AU86618/91A AU8661891A AU8661891A AU 8661891 A AU8661891 A AU 8661891A AU 86618/91 A AU86618/91 A AU 86618/91A AU 8661891 A AU8661891 A AU 8661891A AU 8661891 A AU8661891 A AU 8661891A
Authority
AU
Australia
Prior art keywords
safety circuits
circuits
safety
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.)
Abandoned
Application number
AU86618/91A
Inventor
George Henry Jackson
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.)
EJA Ltd
Original Assignee
EJA Engineering 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 EJA Engineering Ltd filed Critical EJA Engineering Ltd
Publication of AU8661891A publication Critical patent/AU8661891A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H47/004—Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit
    • H01H47/005—Safety control circuits therefor, e.g. chain of relays mutually monitoring each other
AU86618/91A 1990-10-13 1991-10-14 Safety circuits Abandoned AU8661891A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909022283A GB9022283D0 (en) 1990-10-13 1990-10-13 Safety circuits
GB9022283 1990-10-13

Publications (1)

Publication Number Publication Date
AU8661891A true AU8661891A (en) 1992-05-20

Family

ID=10683687

Family Applications (1)

Application Number Title Priority Date Filing Date
AU86618/91A Abandoned AU8661891A (en) 1990-10-13 1991-10-14 Safety circuits

Country Status (3)

Country Link
AU (1) AU8661891A (en)
GB (1) GB9022283D0 (en)
WO (1) WO1992007374A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6297569B1 (en) * 1998-12-31 2001-10-02 Honeywell International Inc. Power switching system
FR2989848B1 (en) * 2012-04-18 2014-04-11 Schneider Electric Ind Sas SECURED DETECTION SYSTEM

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1958017A1 (en) * 1969-11-13 1971-05-19 Licentia Gmbh Circuit arrangement for the secure control of switching operations
USRE28822E (en) * 1972-04-03 1976-05-18 Amana Refrigeration, Inc. Safety interlock system for microwave ovens
US4091438A (en) * 1977-01-31 1978-05-23 The Minster Machine Company Press control system
EP0105054B1 (en) * 1982-10-01 1987-02-04 Square D Starkstrom GmbH Circuit for the active control of limit switches arranged in pairs

Also Published As

Publication number Publication date
WO1992007374A1 (en) 1992-04-30
GB9022283D0 (en) 1990-11-28

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