GB576566A - Improvements in and relating to electrical contacts - Google Patents

Improvements in and relating to electrical contacts

Info

Publication number
GB576566A
GB576566A GB17465/43A GB1746543A GB576566A GB 576566 A GB576566 A GB 576566A GB 17465/43 A GB17465/43 A GB 17465/43A GB 1746543 A GB1746543 A GB 1746543A GB 576566 A GB576566 A GB 576566A
Authority
GB
United Kingdom
Prior art keywords
metal
oxide
mixture
pressed
per cent
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
GB17465/43A
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.)
Mallory Metallurgical Products Ltd
Original Assignee
Mallory Metallurgical Products Ltd
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 Mallory Metallurgical Products Ltd filed Critical Mallory Metallurgical Products Ltd
Publication of GB576566A publication Critical patent/GB576566A/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
    • H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49206—Contact or terminal manufacturing by powder metallurgy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12014—All metal or with adjacent metals having metal particles
    • Y10T428/1216—Continuous interengaged phases of plural metals, or oriented fiber containing

Abstract

A non-sticking, non-welding electrical contact is composed of a metal of high conductivity selected from the group consisting of copper, silver, gold and alloys in which these metals predominate, and, interspersed with such metal, kaolin or an oxide of one of the metals selected from the group consisting of beryllium, magnesium, calcium, strontium and barium and having a m. pt. exceeding 1800 DEG C., the oxide being preferably in the proportion of 1-10 per cent of the mixture. Particles of the metal may be mixed with the oxide, pieces of the desired porosity pressed from the mixture and the pieces sintered by heat; a mixture of the finely-divided metal and oxide may be pressed to porous bars and the bars impregnated by heating them together with more of the metal at a temperature above the m. pt. of the metal but lower than that of the oxide; the oxide may be stirred uniformly into molten metal and the mixture cast in chill moulds; a mixture of the oxide and powdered metal may be hot pressed at a temperature sufficiently high to effect bonding. 1-2 per cent of a cementing agent, e.g. sodium silicate, may be added. Specifications 214,580, 270,300, [both in Class 70], and 523,318 are referred to.
GB17465/43A 1942-10-23 1943-10-23 Improvements in and relating to electrical contacts Expired GB576566A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US463118A US2396101A (en) 1942-10-23 1942-10-23 Electrical contact

Publications (1)

Publication Number Publication Date
GB576566A true GB576566A (en) 1946-04-10

Family

ID=23838931

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17465/43A Expired GB576566A (en) 1942-10-23 1943-10-23 Improvements in and relating to electrical contacts

Country Status (2)

Country Link
US (1) US2396101A (en)
GB (1) GB576566A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30052E (en) 1972-03-15 1979-07-24 Square D Company Electrical contact material and process
US4165452A (en) * 1978-01-09 1979-08-21 General Motors Corporation Ignition distributor electrode for suppressing radio frequency interference
US4166201A (en) * 1978-01-09 1979-08-28 General Motors Corporation Ignition distributor electrode for suppressing radio frequency interference
DE3116657A1 (en) * 1981-04-27 1983-01-27 Siemens AG, 1000 Berlin und 8000 München COMPOSITE FOR ELECTRICAL CONTACTS AND METHOD FOR THE PRODUCTION THEREOF

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2664618A (en) * 1944-04-22 1954-01-05 Fansteel Metallurgical Corp Electrical contact
US2490214A (en) * 1945-07-19 1949-12-06 Mallory & Co Inc P R Electrical contacting element
US2712299A (en) * 1948-08-24 1955-07-05 Parker Pen Co Fountain pen
US2684052A (en) * 1948-09-11 1954-07-20 Parker Pen Co Writing instrument
US2654945A (en) * 1948-10-11 1953-10-13 Cutler Hammer Inc Electrical contact
US2545438A (en) * 1949-01-12 1951-03-20 Baker & Co Inc Spark plug electrode
US2621123A (en) * 1949-04-23 1952-12-09 Gibson Electric Company Method of sintering silver contact material
US2669512A (en) * 1951-01-09 1954-02-16 Mallory & Co Inc P R Electric contact material and method of making the same
US2855491A (en) * 1954-06-30 1958-10-07 Gen Electric Metal-ceramic electrical resistors
US3109716A (en) * 1957-07-22 1963-11-05 Owens Corning Fiberglass Corp Lamellar metal structure
US3114631A (en) * 1960-08-24 1963-12-17 Handy & Harman Silver composition
US3135601A (en) * 1961-11-16 1964-06-02 Martin Marietta Corp Alumina-silver alloy
CH407264A (en) * 1963-10-08 1966-02-15 Bbc Brown Boveri & Cie Method for manufacturing a gas diffusion electrode for electrochemical fuel elements
US3343927A (en) * 1963-12-18 1967-09-26 Motor Wheel Corp Sintered metal brake drum
US3701654A (en) * 1967-01-03 1972-10-31 Texas Instruments Inc Silver-base alloy for making electrical contacts
GB1376626A (en) * 1971-10-27 1974-12-11 Square D Co Electrical contact materials
US4011052A (en) * 1972-03-15 1977-03-08 Square D Company Electrical contact material and process
USRE29986E (en) * 1972-03-15 1979-05-08 Square D Company Electrical contact material and process
US4011053A (en) * 1972-03-15 1977-03-08 Square D Company Electrical contact material and process
US4018599A (en) * 1975-09-05 1977-04-19 Engelhard Minerals & Chemicals Corporation Electrical contacts of dispersion strengthened gold
US4202686A (en) * 1976-12-27 1980-05-13 Mitsubishi Kinzoku Kabushiki Kaisha Process for manufacturing fine powder of metal
JPS5476731A (en) * 1977-11-30 1979-06-19 Nissan Motor Co Ltd Distributor of internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30052E (en) 1972-03-15 1979-07-24 Square D Company Electrical contact material and process
US4165452A (en) * 1978-01-09 1979-08-21 General Motors Corporation Ignition distributor electrode for suppressing radio frequency interference
US4166201A (en) * 1978-01-09 1979-08-28 General Motors Corporation Ignition distributor electrode for suppressing radio frequency interference
DE3116657A1 (en) * 1981-04-27 1983-01-27 Siemens AG, 1000 Berlin und 8000 München COMPOSITE FOR ELECTRICAL CONTACTS AND METHOD FOR THE PRODUCTION THEREOF

Also Published As

Publication number Publication date
US2396101A (en) 1946-03-05

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