GB887026A - An electromagnetic switching device - Google Patents

An electromagnetic switching device

Info

Publication number
GB887026A
GB887026A GB38478/58A GB3847858A GB887026A GB 887026 A GB887026 A GB 887026A GB 38478/58 A GB38478/58 A GB 38478/58A GB 3847858 A GB3847858 A GB 3847858A GB 887026 A GB887026 A GB 887026A
Authority
GB
United Kingdom
Prior art keywords
coils
yokes
contacts
flux
holding
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
GB38478/58A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB887026A publication Critical patent/GB887026A/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
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H01H51/281—Mounting of the relay; Encapsulating; Details of connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/22—Switches without multi-position wipers
    • H01H67/30—Co-ordinate-type selector switches with field of co-ordinate coil acting directly upon magnetic leaf spring or reed-type contact member

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

887,026. Electromagnetic switches. STANDARD TELEPHONES & CABLES Ltd. Nov. 28, 1958 [Dec. 3, 1957], No. 38478/58. Class 38 (5). [Also in Group XXXIX] In a cross-bar switch having so-called " reed contacts " of magnetic material operable by flux flowing therethrough, the two reeds forming a contact set are magnetically connected respectively to horizontal yokes N10 . . . N19 and vertical yokes N1 . . . N9, each yoke (such as N10) having an individual pair of coils (such as B10, B11, Fig. 3) and each group of yokes is provided with holding coils 11, 12 and 13, 14 respectively which surround the corresponding individual coils. The holding coils are permanently energized to produce a flux insufficient to operate any of the contacts, but capable of holding contacts once they are operated. Operation of a pair of contacts is effected by reinforcing the holding flux with a further flux by energizing the corresponding individual horizontal and vertical coils. This further flux is insufficient to operate the reed contacts by itself. Release is effected by energizing these coils in the reverse direction. Electrical connections may be established through the yokes, which may be insulated from the main magnetic frame 1 by means of ferrite bushings (not shown); or ferrite bushings may be provided in the yokes at the points where they are joined by the reeds, individual electrical connections being made to the reeds. The individual reed contacts may be enclosed in a casing filled with inert gas.
GB38478/58A 1957-12-03 1958-11-28 An electromagnetic switching device Expired GB887026A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR752918 1957-12-03

Publications (1)

Publication Number Publication Date
GB887026A true GB887026A (en) 1962-01-10

Family

ID=8705201

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38478/58A Expired GB887026A (en) 1957-12-03 1958-11-28 An electromagnetic switching device

Country Status (5)

Country Link
US (1) US2999140A (en)
BE (1) BE573527R (en)
CH (1) CH370127A (en)
FR (1) FR1191307A (en)
GB (1) GB887026A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348075A (en) * 1964-07-22 1967-10-17 Bell Telephone Labor Inc Circuit identifier
CN110269421A (en) * 2019-06-24 2019-09-24 无锡市启冠健康科技有限公司 A kind of learning chair to correct sitting posture

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2187115A (en) * 1939-03-02 1940-01-16 Bell Telephone Labor Inc Switching device
US2397123A (en) * 1943-04-30 1946-03-26 Bell Telephone Labor Inc Contact operation
US2535400A (en) * 1949-08-25 1950-12-26 Bell Telephone Labor Inc Multicontact dry reed relay
US2630506A (en) * 1949-12-30 1953-03-03 Bell Telephone Labor Inc Relay
US2902558A (en) * 1955-02-17 1959-09-01 Bell Telephone Labor Inc Laminated core dry reed relay
BE543234A (en) * 1955-02-17
US2821597A (en) * 1955-03-18 1958-01-28 Bell Telephone Labor Inc Register relay

Also Published As

Publication number Publication date
CH370127A (en) 1963-06-30
US2999140A (en) 1961-09-05
BE573527R (en) 1959-06-03
FR1191307A (en) 1959-10-19

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