US3657505A - Electrical contacting arrangement - Google Patents

Electrical contacting arrangement Download PDF

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Publication number
US3657505A
US3657505A US18085A US3657505DA US3657505A US 3657505 A US3657505 A US 3657505A US 18085 A US18085 A US 18085A US 3657505D A US3657505D A US 3657505DA US 3657505 A US3657505 A US 3657505A
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US
United States
Prior art keywords
aluminum
contact
layer
base body
copper
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 - Lifetime
Application number
US18085A
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English (en)
Inventor
Josef Mosele
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3657505A publication Critical patent/US3657505A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/38—Plug-and-socket contacts
    • H01H1/385—Contact arrangements for high voltage gas blast circuit breakers

Definitions

  • a composite electrical contact structure which includes a laminate of an aluminum layer bonded to a layer of high-grade [52] US. Cl. ..200/166 C, 29/630 C contact material such as copper or silver onto the aluminum [51] Int. Cl. ..H01h 1/02 layer of which is then cast a base body of aluminum or alu- [58] Field of Search ..200/166 C; 29/630 C m n alloy. ng ng o the e o y, the surface of the aluminum layer is fused by and becomes united with the molten aluminum upon solidification of the latter.
  • the present invention relates to an electrical contact arrangement, especially for power circuit breaker apparatus, in which a base body of aluminum or aluminum alloy is joined to a contact piece of high-grade contact material by casting.
  • the present invention is based on the task to find a solution for applying contacts to a base body of aluminum or aluminum alloy with a high-grade material, in which the contact transition is substantially improved over the arrangements so far proposed, with respect to from the electrical as well as thermal aspects.
  • the contact piece-be a composite body consisting of aluminum and the high-grade contact material, the aluminum side of which faces the base body. In this manner there is obtained between the base body and the aluminum side of the composite body an intimate, homogeneous metallic bond which remains free of corrosion and in which the entire cross section of the transfer area is utilized.
  • FIG. 1 is a half longitudinal section showing the point of contact between two tubular conductors
  • FIG. 2 is a similar sectional view showing a sliding contact arrangement.
  • the two tubular conductors l and 2 are arranged so that they butt against each other with their end faces.
  • the conductors 1, 2 consist of aluminum or aluminum alloy and each have at the end face the contact bodies 3 and 4, respectively, each of which, as.a composite body, consists of two layers 3a, 3b and 4a, 411, respectively.
  • the layers 3a and 4a, respectively, consist of aluminum and the layers 3b, 4b respectively consist of high-grade contact material, such as for-example, copper or silver.
  • Such composite bodies are manufactured by rolling together under pressure and heat to form a laminate and are commercially available in various forms, for instance, in plate form, for instance, as the so-called Cupal plate.
  • the tubular conductor part 1 can for example, be cast from an ingot of aluminum alloy, wherein the laminated body 3 is placed into the casting mold prior to pouring the molten aluminum into the mold, in such a manner that the aluminum side, layer 3a, faces the casting zone for the conductor body 1 as the latter is cast.
  • the composite bodies 3, 4 and an adjacent portion of the conductor 1, 2 can be covered with a suitable protective lacquer, so that access of air and moisture to the contact point is prevented.
  • the required contact pressure between the conductors l and 2 can be achieved, for example, by pressing them together in a manner known per se, not shown in detail. If the contacting layers 3b, 4b consists, for example, of copper, they can be silver-plated after they have been faced off to make them flat.
  • the ring shaped composite body 8 built up from the aluminum and copper layers 8a, 8b, is cast into the outer surface of the tubular shaped aluminum base body 5.
  • the contact fingers 9 On the side of the outer layer of high-grade contact material 8b rest the contact fingers 9.
  • These fingers 9 distributed around the circumference. They can consist, for example, of silver-plated copper and are held in a fixed cage 10, with the insertion of the contact pressure springs 11.
  • Within the part 5 is accommodated, by means of an insulating plastic ring 7, a nozzle switch piece 6 which is supported and driven so that it can reciprocate in the direction of the double-headed arrow 12.
  • the switch piece 6 consists, for example, of silverplated copper and the right-hand ends of the fingers 6 slide on it.
  • the two end faces of the sheet-shaped composite body 8 each can terminate in a small recess in the shape of an annular groove in the base body 5, so that they do not touch the latter.
  • the groove can be filled with a protective lacquer which possibly also covers the bodies 5, 8 to some extent.
  • a composite contact structure comprising a laminate consisting of an aluminum layer bonded to a layer of highgrade contact material and a base body essentially of aluminum cast upon and fused with said aluminum layer.
  • MOSELE JOSEF I is ccrtificd that error appears in the and ch-1'7; uaid Letters Patent a.

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  • Contacts (AREA)
  • Manufacture Of Switches (AREA)
US18085A 1969-04-01 1970-03-10 Electrical contacting arrangement Expired - Lifetime US3657505A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH494369A CH497771A (de) 1969-04-01 1969-04-01 Elektrische Kontaktanordnung, insbesondere für Starkstromschaltgeräte
DE19691917104 DE1917104A1 (de) 1969-04-01 1969-04-02 Elektrische Kontaktanordnung
DE6913470U DE6913470U (de) 1969-04-01 1969-04-02 Elektrische kontaktanordnung

Publications (1)

Publication Number Publication Date
US3657505A true US3657505A (en) 1972-04-18

Family

ID=27175037

Family Applications (1)

Application Number Title Priority Date Filing Date
US18085A Expired - Lifetime US3657505A (en) 1969-04-01 1970-03-10 Electrical contacting arrangement

Country Status (6)

Country Link
US (1) US3657505A (de)
CH (1) CH497771A (de)
DE (2) DE6913470U (de)
FR (1) FR2042222A5 (de)
GB (1) GB1247131A (de)
SE (1) SE352474B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599376A (en) * 1968-11-22 1971-08-17 Cincinnati Milacron Inc Apparatus for automatic grinding
USRE31452E (en) * 1979-02-16 1983-11-29 Casco Products Division of Sun Chemical Corporation Quick-acting electric cigar lighter
RU2146199C1 (ru) * 1997-11-27 2000-03-10 Московский государственный институт стали и сплавов (технологический университет) Композиционный материал
RU2146619C1 (ru) * 1997-11-27 2000-03-20 Московский государственный институт стали и сплавов (технологический университет) Композиционный материал

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026603A (en) * 1958-10-13 1962-03-27 Kelsey Hayes Co Method of making electrical contacts and the like
US3198662A (en) * 1962-08-20 1965-08-03 Philip M H Seibert Process of applying a silver layer on an aluminum electrical contact
US3299240A (en) * 1965-05-25 1967-01-17 Ite Circuit Breaker Ltd Hinge contact for disconnect switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026603A (en) * 1958-10-13 1962-03-27 Kelsey Hayes Co Method of making electrical contacts and the like
US3198662A (en) * 1962-08-20 1965-08-03 Philip M H Seibert Process of applying a silver layer on an aluminum electrical contact
US3299240A (en) * 1965-05-25 1967-01-17 Ite Circuit Breaker Ltd Hinge contact for disconnect switch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3599376A (en) * 1968-11-22 1971-08-17 Cincinnati Milacron Inc Apparatus for automatic grinding
USRE31452E (en) * 1979-02-16 1983-11-29 Casco Products Division of Sun Chemical Corporation Quick-acting electric cigar lighter
RU2146199C1 (ru) * 1997-11-27 2000-03-10 Московский государственный институт стали и сплавов (технологический университет) Композиционный материал
RU2146619C1 (ru) * 1997-11-27 2000-03-20 Московский государственный институт стали и сплавов (технологический университет) Композиционный материал

Also Published As

Publication number Publication date
FR2042222A5 (de) 1971-02-05
DE6913470U (de) 1971-02-18
CH497771A (de) 1970-10-15
DE1917104A1 (de) 1970-10-08
GB1247131A (en) 1971-09-22
SE352474B (de) 1972-12-27

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