GB1346758A - Vacuum interrupter contacts - Google Patents

Vacuum interrupter contacts

Info

Publication number
GB1346758A
GB1346758A GB1346758DA GB1346758A GB 1346758 A GB1346758 A GB 1346758A GB 1346758D A GB1346758D A GB 1346758DA GB 1346758 A GB1346758 A GB 1346758A
Authority
GB
United Kingdom
Prior art keywords
refractory metal
particles
sintered
per cent
chromium
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
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Publication of GB1346758A publication Critical patent/GB1346758A/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
    • H01H1/0203—Contacts characterised by the material thereof specially adapted for vacuum switches
    • H01H1/0206—Contacts characterised by the material thereof specially adapted for vacuum switches containing as major components Cu and Cr

Abstract

1346758 Sintered contacts ASSOCIATED ELECTRICAL INDUSTRIES Ltd 21 May 1971 [24 Feb 1970] 8800/70 Heading C7D [Also in Division H1] A vacuum-interrupter contact has a contact surface portion made of a material which comprises particles of a semi-refractory metal in which are dispersed from 1 per cent to 5 per cent by weight of particles of a refractory metal, the particles being compacted and sintered under vacuum, and the sintered compact being infiltrated under vaccum with a non-refractory metal. The non-refractory metal consists of or includes as a main constituant, copper, silver or an alloy of copper and/or silver. The semi-refractory metal consists of, or includes as a main constituent, chromium, chromium mono-boride, cobalt or a combination thereof. The refractory metal consists of or includes as a main constituent, tungsten, molybdenum or tantalum and I may have a particle size of À001 to 01 inch being granules consisting of sintered particles. The surface portion may be formed by making a sintered compact from a mixture of semirefractory metal powder, e.g. chromium, and the refractory particles and infiltrating the compact with the non-refractory metal, e.g. to provide a copper content of 20 per cent to 41 per cent by weight.
GB1346758D 1970-02-24 1970-02-24 Vacuum interrupter contacts Expired GB1346758A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB880070 1970-02-24

Publications (1)

Publication Number Publication Date
GB1346758A true GB1346758A (en) 1974-02-13

Family

ID=9859493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1346758D Expired GB1346758A (en) 1970-02-24 1970-02-24 Vacuum interrupter contacts

Country Status (1)

Country Link
GB (1) GB1346758A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110176A2 (en) * 1982-11-01 1984-06-13 Mitsubishi Denki Kabushiki Kaisha Contact material for vacuum circuit breaker
EP0181149A2 (en) * 1984-10-30 1986-05-14 Mitsubishi Denki Kabushiki Kaisha Contact material for vacuum circuit breaker
EP0184854A2 (en) * 1984-12-13 1986-06-18 Mitsubishi Denki Kabushiki Kaisha Contact for vacuum interrupter
EP0354997A2 (en) * 1988-08-19 1990-02-21 Kabushiki Kaisha Toshiba Contact forming material for a vacuum interrupter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110176A2 (en) * 1982-11-01 1984-06-13 Mitsubishi Denki Kabushiki Kaisha Contact material for vacuum circuit breaker
EP0110176A3 (en) * 1982-11-01 1987-01-21 Mitsubishi Denki Kabushiki Kaisha Contact material for vacuum circuit breaker
EP0181149A2 (en) * 1984-10-30 1986-05-14 Mitsubishi Denki Kabushiki Kaisha Contact material for vacuum circuit breaker
EP0181149A3 (en) * 1984-10-30 1987-07-29 Mitsubishi Denki Kabushiki Kaisha Contact material for vacuum circuit breaker
EP0184854A2 (en) * 1984-12-13 1986-06-18 Mitsubishi Denki Kabushiki Kaisha Contact for vacuum interrupter
EP0184854A3 (en) * 1984-12-13 1987-08-26 Mitsubishi Denki Kabushiki Kaisha Contact for vacuum interrupter
EP0354997A2 (en) * 1988-08-19 1990-02-21 Kabushiki Kaisha Toshiba Contact forming material for a vacuum interrupter
EP0354997A3 (en) * 1988-08-19 1990-07-11 Kabushiki Kaisha Toshiba Contact forming material for a vacuum interrupter
US5149362A (en) * 1988-08-19 1992-09-22 Kabushiki Kaisha Toshiba Contact forming material for a vacuum interrupter

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years