GB1297199A - - Google Patents

Info

Publication number
GB1297199A
GB1297199A GB1297199DA GB1297199A GB 1297199 A GB1297199 A GB 1297199A GB 1297199D A GB1297199D A GB 1297199DA GB 1297199 A GB1297199 A GB 1297199A
Authority
GB
United Kingdom
Prior art keywords
obstruction
relay
relays
tool
detected
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
Other languages
English (en)
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 filed Critical
Publication of GB1297199A publication Critical patent/GB1297199A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002Monitoring or fail-safe circuits
    • H01H47/004Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit
    • H01H47/005Safety control circuits therefor, e.g. chain of relays mutually monitoring each other

Landscapes

  • Auxiliary Devices For Machine Tools (AREA)
  • Keying Circuit Devices (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
GB1297199D 1969-05-13 1970-04-28 Expired GB1297199A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691924461 DE1924461C3 (de) 1969-05-13 1969-05-13 Schaltungsanordnung zur Überwachung des Kontaktspiels von Relaiskontakten

Publications (1)

Publication Number Publication Date
GB1297199A true GB1297199A (enExample) 1972-11-22

Family

ID=5734114

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1297199D Expired GB1297199A (enExample) 1969-05-13 1970-04-28

Country Status (3)

Country Link
DE (1) DE1924461C3 (enExample)
FR (1) FR2047230A5 (enExample)
GB (1) GB1297199A (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2831089C2 (de) * 1978-07-14 1984-02-16 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Schaltungsanordnung zur Überwachung der Relaiskontakte im Überwachungskreis einer Arbeitsmaschine
DE3619723A1 (de) * 1986-06-12 1987-12-17 Kloeckner Moeller Elektrizit Kontaktbehaftete zusatzsteuerung fuer sicherheitsstromkreise
DE102022110812A1 (de) 2022-05-03 2023-11-09 Phoenix Contact Gmbh & Co. Kg Sicherheitsschaltvorrichtung insbesondere zum überwachten Einschalten eines elektrischen und/oder elektronischen Verbrauchers

Also Published As

Publication number Publication date
DE1924461A1 (de) 1970-11-19
DE1924461C3 (de) 1978-03-09
DE1924461B2 (de) 1977-07-21
FR2047230A5 (enExample) 1971-03-12

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee