FR612830A - Improvements in relays - Google Patents

Improvements in relays

Info

Publication number
FR612830A
FR612830A FR612830DA FR612830A FR 612830 A FR612830 A FR 612830A FR 612830D A FR612830D A FR 612830DA FR 612830 A FR612830 A FR 612830A
Authority
FR
France
Prior art keywords
relays
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
French (fr)
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.)
SPX Corp
Original Assignee
General Railway Signal Co
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 General Railway Signal Co filed Critical General Railway Signal Co
Application granted granted Critical
Publication of FR612830A publication Critical patent/FR612830A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/30—Electromagnetic relays specially adapted for actuation by ac
    • H01H51/32—Frequency relays; Mechanically-tuned relays

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Electromagnets (AREA)
FR612830D 1925-03-19 1926-03-16 Improvements in relays Expired FR612830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16747A US1766611A (en) 1925-03-19 1925-03-19 Relay

Publications (1)

Publication Number Publication Date
FR612830A true FR612830A (en) 1926-11-02

Family

ID=21778740

Family Applications (1)

Application Number Title Priority Date Filing Date
FR612830D Expired FR612830A (en) 1925-03-19 1926-03-16 Improvements in relays

Country Status (5)

Country Link
US (1) US1766611A (en)
BE (1) BE332737A (en)
FR (1) FR612830A (en)
GB (1) GB249511A (en)
NL (1) NL19814C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2447890A (en) * 1942-12-03 1948-08-24 Bendix Aviat Corp Electromagnetic mechanism
BE540332A (en) * 1954-10-25
US2916581A (en) * 1957-03-06 1959-12-08 Mallory & Co Inc P R Low loss vibrator
US3036176A (en) * 1959-08-11 1962-05-22 Connecticut Valley Entpr Inc Electrical relay

Also Published As

Publication number Publication date
NL19814C (en)
BE332737A (en)
GB249511A (en) 1926-08-26
US1766611A (en) 1930-06-24

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