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GB539120A - Improvements in and relating to electric contacts - Google Patents

Improvements in and relating to electric contacts

Info

Publication number
GB539120A
GB539120A GB4747/40A GB474740A GB539120A GB 539120 A GB539120 A GB 539120A GB 4747/40 A GB4747/40 A GB 4747/40A GB 474740 A GB474740 A GB 474740A GB 539120 A GB539120 A GB 539120A
Authority
GB
United Kingdom
Prior art keywords
alloys
electric contacts
per cent
march
manganese
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
GB4747/40A
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.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey 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 Johnson Matthey PLC filed Critical Johnson Matthey PLC
Publication of GB539120A publication Critical patent/GB539120A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/02—Contacts characterised by the material thereof
    • H01H1/021—Composite material
    • H01H1/023—Composite material having a noble metal as the basic material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Conductive Materials (AREA)

Abstract

539,120. Alloys ; electric contacts. JOHNSON, MATTHEY & CO., Ltd. March 13, 1940, Nos. 4747 and 4748. Convention dates, March 16, 1939, and April 25. 1939. [Class 82 (i)] [Also in in Group XXXVII] Alloys for electric contacts consist of silver with 0.5-25 per cent. of cadmium and 0.05-15 per cent. of magnesium, with or without up to a total of 5 per cent. of copper, nickel, cobalt, iron, or manganese. The opposing contact may be made of tungsten, or of an alloy of silver with gold, palladium, or platinum, with or without small amounts of nickel, iron, cobalt, or manganese. Specifications 267,263, [Class 82 (i)], and 453,419, are referred to. The Specification as open to inspection under Sect. 91 refers also to the application of the alloys to jewellery, tableware, and the like. This subject-matter does not appear in the Specification as accepted.
GB4747/40A 1939-03-16 1940-03-13 Improvements in and relating to electric contacts Expired GB539120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US539120XA 1939-03-16 1939-03-16

Publications (1)

Publication Number Publication Date
GB539120A true GB539120A (en) 1941-08-28

Family

ID=21987376

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4747/40A Expired GB539120A (en) 1939-03-16 1940-03-13 Improvements in and relating to electric contacts

Country Status (1)

Country Link
GB (1) GB539120A (en)

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