GB758953A - Improvements in or relating to direct current electric switching contacts - Google Patents

Improvements in or relating to direct current electric switching contacts

Info

Publication number
GB758953A
GB758953A GB6481/54A GB648154A GB758953A GB 758953 A GB758953 A GB 758953A GB 6481/54 A GB6481/54 A GB 6481/54A GB 648154 A GB648154 A GB 648154A GB 758953 A GB758953 A GB 758953A
Authority
GB
United Kingdom
Prior art keywords
per cent
relating
direct current
current electric
switching contacts
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
GB6481/54A
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.)
Stackpole Carbon Co
Original Assignee
Stackpole Carbon 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 Stackpole Carbon Co filed Critical Stackpole Carbon Co
Publication of GB758953A publication Critical patent/GB758953A/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
    • H01H1/04—Co-operating contacts of different material

Abstract

758,953. Switch contacts. STACKPOLE CARBON CO. March 5, 1954 [March 12, 1953], No. 6481/54. Class 38(5) One, preferably the " cathode ", of a pair of D.C. contacts is formed from (a) a noble metal, e.g. silver or gold, (b) lead and (c) one of the following, viz: cadmium, bismuth, antimony, mangangese and chromium. The amount of lead is between 1 per cent and 10 per cent (preferably 2 per cent) and constituent (c) should not exceed 5 per cent. The "anode" contact may be formed from the same material or from a mixture of 20 to 70 per cent silver (preferably not over 40 per cent), 2 to 8 per cent nickel (preferably about 5 per cent) and the remainder gold.
GB6481/54A 1953-03-12 1954-03-05 Improvements in or relating to direct current electric switching contacts Expired GB758953A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US342026A US2770700A (en) 1953-03-12 1953-03-12 Direct current electric switching contacts

Publications (1)

Publication Number Publication Date
GB758953A true GB758953A (en) 1956-10-10

Family

ID=23340020

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6481/54A Expired GB758953A (en) 1953-03-12 1954-03-05 Improvements in or relating to direct current electric switching contacts

Country Status (3)

Country Link
US (1) US2770700A (en)
DE (1) DE1029497B (en)
GB (1) GB758953A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3191275A (en) * 1961-09-26 1965-06-29 Talon Inc Method of making electrical contacts
US3154660A (en) * 1962-03-26 1964-10-27 Gen Motors Corp Arc-resistant electrical contact having a cadmium-copper, alloy surface
US4011053A (en) * 1972-03-15 1977-03-08 Square D Company Electrical contact material and process
US4011052A (en) * 1972-03-15 1977-03-08 Square D Company Electrical contact material and process
USRE30052E (en) * 1972-03-15 1979-07-24 Square D Company Electrical contact material and process
USRE29986E (en) * 1972-03-15 1979-05-08 Square D Company Electrical contact material and process

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US937285A (en) * 1909-02-24 1909-10-19 Western Electric Co Alloy.
GB456018A (en) * 1934-07-09 1936-11-02 Molybdenum Co Nv Improvements in or relating to the manufacture of welding electrodes and electric make-and-break switch contacts
US2099551A (en) * 1937-05-20 1937-11-16 Gen Electric Electrical switch contacts
CH234233A (en) * 1941-08-23 1944-09-15 Fides Gmbh Contact for low voltage devices.
US2362007A (en) * 1943-03-23 1944-11-07 Mallory & Co Inc P R Method of making sintered copper chromium metal composition

Also Published As

Publication number Publication date
US2770700A (en) 1956-11-13
DE1029497B (en) 1958-05-08

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