US1658713A - Electrical contact - Google Patents
Electrical contact Download PDFInfo
- Publication number
- US1658713A US1658713A US671785A US67178523A US1658713A US 1658713 A US1658713 A US 1658713A US 671785 A US671785 A US 671785A US 67178523 A US67178523 A US 67178523A US 1658713 A US1658713 A US 1658713A
- Authority
- US
- United States
- Prior art keywords
- contact
- copper
- base
- silver
- alloy
- 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
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 20
- 239000010949 copper Substances 0.000 description 20
- 229910052802 copper Inorganic materials 0.000 description 16
- 239000003870 refractory metal Substances 0.000 description 8
- 229910000881 Cu alloy Inorganic materials 0.000 description 7
- 238000005219 brazing Methods 0.000 description 7
- 229910001316 Ag alloy Inorganic materials 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001371 Er alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
Images
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
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9265—Special properties
- Y10S428/929—Electrical contact feature
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9335—Product by special process
- Y10S428/939—Molten or fused coating
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S76/00—Metal tools and implements, making
- Y10S76/05—Electric welding
-
- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S76/00—Metal tools and implements, making
- Y10S76/11—Tungsten and tungsten carbide
-
- 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
- Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
- Y10T29/4921—Contact or terminal manufacturing by assembling plural parts with bonding
- Y10T29/49211—Contact or terminal manufacturing by assembling plural parts with bonding of fused material
- Y10T29/49213—Metal
-
- 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
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
- Y10T428/12812—Diverse refractory group metal-base components: alternative to or next to each other
-
- 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
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12882—Cu-base component alternative to Ag-, Au-, or Ni-base component
-
- 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
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12903—Cu-base component
- Y10T428/1291—Next to Co-, Cu-, or Ni-base component
Definitions
- the present invention relates to electrical make and break contacts, as for example, the vibratory contacts in an ignition system for an internal combustion engine.
- the brazing of the tip and base by copper 1s carried out by interposing copper as a thm plate between the contact tip and the base and then melting the copper in a hydrogen atmosphere.
- Althoug copper is entirely satisfactory to produce a strong joint, great care must be exercised not to permit any excess of copper to remain on the contacting face or on the sides of the contact disk of refractory metal as this will cause arcing at the contacts during subsequent operation accompanied by overheating and burning of the contact points.
- This tendency of copper to cause arcing when present upon the contacting surfaces necessitated a separate grinding operation in the manufacture of make and break contacts.
- Even a careful removal of copper from the contact disk did not always obviate the dangerof arcing, as copper sometimes worked through cracks in the contact disk to the contact face and caused arcing.
- brazing metal in an electrical contact is constituted by a suitable alloy of silver and copper that no arcing occurs when the brazing alloys remain on the face of the contact disk, or creeps on the contact face during operation of the contact.
- the base whereby a contact is attached may consist wholly of soft metal, as silver-copper alloy in the present instance, I shall describe my invention as applied to the manufacture of contacts having a base of other metal.
- the disk 1 of silver-cop er alloy is interposed between the contact disk 2 and the stem or support 3.
- the silver alloy may contain from about 15 to 28 per cent copper, the lower content of copper of this range being preferred.
- the contact disk may consist of tungsten, molybdenum, or other refractory metal.
- the base 3 ordinarily consists of soft steel, but to advantage may consist of copper or bronze which have a higher heat conductivit than steel.
- the contact parts thusassemb ed are heated to the melting point of the brazing materials while held on a suitable form or support, preferably consisting of graphite in a furnace provided with an atmosphere of filling of hydrogen, as described in Coolidge Patent 1,181,741.
- the silver-copper alloy readily wets' both the tip of tungsten or other refractory metal and the base of iron or steel in the presence of a reducing gas.
- the mechanical properties of the completed contact containing an interjacent brazinglayer of silver-copper alloy are substantially the same as a contact containing a brazing film of copper while as already indicated no grinding or other finishing step is required to remove excess brazing material, and no difficulty is experienced by brazing metal working through cracks of the contact disk to the face of the contact.
- An electrical make and break contact comprising a contact head having a substantially fiat surface and a parallel, substantially flat backing therefor consisting of an alloy of silver and copper, said backing being joined to said head by fusion.
- An electrical make and break contact comprising a contact head of refractory metal, a base and an alloy of silver and copper uniting said head and base by fusion said alloy consisting largely of silver and containing not more than 28% of copper.
- An electrical make and break contact comprising a contact head of refractory metal having a substantially flat surface, a base consisting of cuprous metal, said base having a substantially flat surface, and an alloy of silver and copper interposed between said flat surfaces to unite said head and base.
- An electrical make and break contact comprising a. contact head of n0n-arcing,'1-efractory material and a backing material consisting of an alloy of 85 to 72% parts silver and about 15 to 28 per cent copper.
- An electrical make and break contact comprising a head of tungsten, a base of 10 copper and an interjacent layer of silvercopper alloy containing at' least about 72 parts silver.
Landscapes
- Contacts (AREA)
Description
Feb. 7, 1928. 1,658,713
T. s. FULLER ELECTRICAL CONTACT Filed Oct- 30. 1923 Inventor: Truman '61",
"Us Attorney- Patented Feb. 7, 1928.
UNITED STATES PATENT OFFICE.
TRUMAN S. FULLER, OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COIPANY, A CORPORATION 01 NEW YORK.
ELECTRICAL CONTACT.
Application filed October 30, 1923. Serial No. 671,785.
The present invention relates to electrical make and break contacts, as for example, the vibratory contacts in an ignition system for an internal combustion engine.
5 When refractory metals such, for example, as tungsten or molybdenum are utilized as tips for make and break contacts, the pellets of refractory metal between which the en'- cuit is broken have been secured by a layer 1 of copper to a base or tack of steel, or other metal suitable for riveting, which solidly binds the tip of refractory metal to the base to make a unitary structure. As described in Coolidge Patent 1,181,741, of May 2, 191$,
the brazing of the tip and base by copper 1s carried out by interposing copper as a thm plate between the contact tip and the base and then melting the copper in a hydrogen atmosphere.
Althoug copper is entirely satisfactory to produce a strong joint, great care must be exercised not to permit any excess of copper to remain on the contacting face or on the sides of the contact disk of refractory metal as this will cause arcing at the contacts during subsequent operation accompanied by overheating and burning of the contact points. This tendency of copper to cause arcing when present upon the contacting surfaces necessitated a separate grinding operation in the manufacture of make and break contacts. But even a careful removal of copper from the contact disk did not always obviate the dangerof arcing, as copper sometimes worked through cracks in the contact disk to the contact face and caused arcing.
I have discovered that when the brazing metal in an electrical contact is constituted by a suitable alloy of silver and copper that no arcing occurs when the brazing alloys remain on the face of the contact disk, or creeps on the contact face during operation of the contact.
The accompanying drawing illustrates a contact embodying my invention, Fig. 1 showing the parts before assembly, and Fig. 2 the completed contact.
Although the base whereby a contact is attached may consist wholly of soft metal, as silver-copper alloy in the present instance, I shall describe my invention as applied to the manufacture of contacts having a base of other metal.
Referring to the drawing, the disk 1 of silver-cop er alloy is interposed between the contact disk 2 and the stem or support 3. The silver alloy may contain from about 15 to 28 per cent copper, the lower content of copper of this range being preferred. The contact disk may consist of tungsten, molybdenum, or other refractory metal. The base 3 ordinarily consists of soft steel, but to advantage may consist of copper or bronze which have a higher heat conductivit than steel. The contact parts thusassemb ed are heated to the melting point of the brazing materials while held on a suitable form or support, preferably consisting of graphite in a furnace provided with an atmosphere of filling of hydrogen, as described in Coolidge Patent 1,181,741.
The silver-copper alloy readily wets' both the tip of tungsten or other refractory metal and the base of iron or steel in the presence of a reducing gas. The mechanical properties of the completed contact containing an interjacent brazinglayer of silver-copper alloy are substantially the same as a contact containing a brazing film of copper while as already indicated no grinding or other finishing step is required to remove excess brazing material, and no difficulty is experienced by brazing metal working through cracks of the contact disk to the face of the contact.
What I claim as new and desire to secure by Letters Patent of the United States, is,
1. An electrical make and break contact comprising a contact head having a substantially fiat surface and a parallel, substantially flat backing therefor consisting of an alloy of silver and copper, said backing being joined to said head by fusion.
2. An electrical make and break contact comprising a contact head of refractory metal, a base and an alloy of silver and copper uniting said head and base by fusion said alloy consisting largely of silver and containing not more than 28% of copper.
3. An electrical make and break contact comprising a contact head of refractory metal having a substantially flat surface, a base consisting of cuprous metal, said base having a substantially flat surface, and an alloy of silver and copper interposed between said flat surfaces to unite said head and base. 4. An electrical make and break contact comprising a. contact head of n0n-arcing,'1-efractory material and a backing material consisting of an alloy of 85 to 72% parts silver and about 15 to 28 per cent copper.
5. An electrical make and break contact comprising a head of tungsten, a base of 10 copper and an interjacent layer of silvercopper alloy containing at' least about 72 parts silver. I
In witness whereof, I have hereunto set my hand this 29th day of October, 1923.
TRUMAN S. FULLER.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US671785A US1658713A (en) | 1923-10-30 | 1923-10-30 | Electrical contact |
| GB25784/24A GB224230A (en) | 1923-10-30 | 1924-10-29 | Improvements in and relating to electrical contacts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US671785A US1658713A (en) | 1923-10-30 | 1923-10-30 | Electrical contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1658713A true US1658713A (en) | 1928-02-07 |
Family
ID=24695874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US671785A Expired - Lifetime US1658713A (en) | 1923-10-30 | 1923-10-30 | Electrical contact |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1658713A (en) |
| GB (1) | GB224230A (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2456933A (en) * | 1943-11-25 | 1948-12-21 | Gen Electric | Brazing alloy |
| US2464533A (en) * | 1947-05-21 | 1949-03-15 | Thomas R Shearer | Positive contact ignition assembly |
| US2508465A (en) * | 1944-03-18 | 1950-05-23 | Westinghouse Electric Corp | Lined metal tube and method of manufacture |
| US2799081A (en) * | 1952-09-24 | 1957-07-16 | Gibson Electric Company | Electrical contacts |
| US2922028A (en) * | 1957-11-25 | 1960-01-19 | Union Carbide Corp | Electric arc electrodes |
| US3000085A (en) * | 1958-06-13 | 1961-09-19 | Westinghouse Electric Corp | Plating of sintered tungsten contacts |
| US3010198A (en) * | 1953-02-16 | 1961-11-28 | Gen Motors Corp | Joining titanium and titanium-base alloys to high melting metals |
| US3802062A (en) * | 1973-01-23 | 1974-04-09 | Duerrwaechter E Dr Doduco | PROCESS OF PRODUCING SOLDERABLE COMPOSITES CONTAINING AgCdO |
| US3935988A (en) * | 1973-07-05 | 1976-02-03 | Eugen Durrwachter Doduco | Process of producing solderable composites containing AgCdO |
| US4017266A (en) * | 1974-04-24 | 1977-04-12 | General Instrument Corporation | Process for making a brazed lead electrode, and product thereof |
| US4053728A (en) * | 1975-10-24 | 1977-10-11 | General Electric Company | Brazed joint between a beryllium-base part and a part primarily of a metal that is retractable with beryllium to form a brittle intermetallic compound |
| US4246321A (en) * | 1978-12-20 | 1981-01-20 | Chugai Denki Kogya Kabushiki-Kaisha | Ag-SnO Alloy composite electrical contact |
| US4417119A (en) * | 1981-06-22 | 1983-11-22 | Mitsubishi Denki Kabushiki Kaisha | Liquid joint process |
| US4499778A (en) * | 1981-02-03 | 1985-02-19 | Northrop Corporation | Flexure mount assembly for a dynamically tuned gyroscope and method of manufacturing same |
| US4633567A (en) * | 1983-01-03 | 1987-01-06 | Amerace Corporation | Method and apparatus for making a tool |
| US5367195A (en) * | 1993-01-08 | 1994-11-22 | International Business Machines Corporation | Structure and method for a superbarrier to prevent diffusion between a noble and a non-noble metal |
| CN104117748A (en) * | 2014-08-19 | 2014-10-29 | 郑州机械研究所 | High-voltage power transmission and transformation contact and welding method thereof |
| USD863222S1 (en) * | 2019-07-30 | 2019-10-15 | Twisted Ideas, Inc. | Conductive pin |
| US10756453B2 (en) | 2018-08-20 | 2020-08-25 | Twisted Ideas, Inc. | Quick connection system |
| USD931217S1 (en) * | 2015-04-08 | 2021-09-21 | Sonos, Inc. | Power plug |
| US12592507B2 (en) | 2022-03-28 | 2026-03-31 | Antronix Inc. | High frequency receptacle for cable TV pin connector |
-
1923
- 1923-10-30 US US671785A patent/US1658713A/en not_active Expired - Lifetime
-
1924
- 1924-10-29 GB GB25784/24A patent/GB224230A/en not_active Expired
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2456933A (en) * | 1943-11-25 | 1948-12-21 | Gen Electric | Brazing alloy |
| US2508465A (en) * | 1944-03-18 | 1950-05-23 | Westinghouse Electric Corp | Lined metal tube and method of manufacture |
| US2464533A (en) * | 1947-05-21 | 1949-03-15 | Thomas R Shearer | Positive contact ignition assembly |
| US2799081A (en) * | 1952-09-24 | 1957-07-16 | Gibson Electric Company | Electrical contacts |
| US3010198A (en) * | 1953-02-16 | 1961-11-28 | Gen Motors Corp | Joining titanium and titanium-base alloys to high melting metals |
| US2922028A (en) * | 1957-11-25 | 1960-01-19 | Union Carbide Corp | Electric arc electrodes |
| US3000085A (en) * | 1958-06-13 | 1961-09-19 | Westinghouse Electric Corp | Plating of sintered tungsten contacts |
| US3802062A (en) * | 1973-01-23 | 1974-04-09 | Duerrwaechter E Dr Doduco | PROCESS OF PRODUCING SOLDERABLE COMPOSITES CONTAINING AgCdO |
| US3935988A (en) * | 1973-07-05 | 1976-02-03 | Eugen Durrwachter Doduco | Process of producing solderable composites containing AgCdO |
| US4017266A (en) * | 1974-04-24 | 1977-04-12 | General Instrument Corporation | Process for making a brazed lead electrode, and product thereof |
| US4053728A (en) * | 1975-10-24 | 1977-10-11 | General Electric Company | Brazed joint between a beryllium-base part and a part primarily of a metal that is retractable with beryllium to form a brittle intermetallic compound |
| US4246321A (en) * | 1978-12-20 | 1981-01-20 | Chugai Denki Kogya Kabushiki-Kaisha | Ag-SnO Alloy composite electrical contact |
| US4499778A (en) * | 1981-02-03 | 1985-02-19 | Northrop Corporation | Flexure mount assembly for a dynamically tuned gyroscope and method of manufacturing same |
| US4417119A (en) * | 1981-06-22 | 1983-11-22 | Mitsubishi Denki Kabushiki Kaisha | Liquid joint process |
| US4633567A (en) * | 1983-01-03 | 1987-01-06 | Amerace Corporation | Method and apparatus for making a tool |
| US5367195A (en) * | 1993-01-08 | 1994-11-22 | International Business Machines Corporation | Structure and method for a superbarrier to prevent diffusion between a noble and a non-noble metal |
| US5420073A (en) * | 1993-01-08 | 1995-05-30 | International Business Machines Corporation | Structure and method for a superbarrier to prevent diffusion between a noble and a non-noble metal |
| CN104117748A (en) * | 2014-08-19 | 2014-10-29 | 郑州机械研究所 | High-voltage power transmission and transformation contact and welding method thereof |
| CN104117748B (en) * | 2014-08-19 | 2016-10-19 | 郑州机械研究所 | A kind of high voltage power transmission and transforming contact and welding method thereof |
| USD931217S1 (en) * | 2015-04-08 | 2021-09-21 | Sonos, Inc. | Power plug |
| US10756453B2 (en) | 2018-08-20 | 2020-08-25 | Twisted Ideas, Inc. | Quick connection system |
| US11264738B2 (en) | 2018-08-20 | 2022-03-01 | Twisted Ideas, Inc. | Quick connection system |
| USD863222S1 (en) * | 2019-07-30 | 2019-10-15 | Twisted Ideas, Inc. | Conductive pin |
| US12592507B2 (en) | 2022-03-28 | 2026-03-31 | Antronix Inc. | High frequency receptacle for cable TV pin connector |
Also Published As
| Publication number | Publication date |
|---|---|
| GB224230A (en) | 1925-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US1658713A (en) | Electrical contact | |
| US2391456A (en) | Spark plug electrode | |
| US2191460A (en) | Article of manufacture | |
| US2439570A (en) | Electric contact | |
| US3119944A (en) | Spark plug electrode | |
| US3078562A (en) | Method for attaching silver-cadmium oxide bodies to a supporting member | |
| US3065539A (en) | Flushing silver solders over and onto surfaces of other metals | |
| US4053728A (en) | Brazed joint between a beryllium-base part and a part primarily of a metal that is retractable with beryllium to form a brittle intermetallic compound | |
| US1888071A (en) | Seal for electric discharge devices | |
| US1181742A (en) | Electrical contact. | |
| US2626339A (en) | Welding rod | |
| US3034202A (en) | Contact for forge welding methods | |
| US2809423A (en) | Salt flux and method for brazing aluminum parts therewith | |
| US2310568A (en) | Method of joining materials | |
| US2799081A (en) | Electrical contacts | |
| US2250099A (en) | Antifriction composition | |
| US1974298A (en) | Method of making a seal for electric discharge devices | |
| US1860793A (en) | Electrical contacting element | |
| US2652624A (en) | Method of producing composite metal | |
| US2294405A (en) | Aluminum base metal composition | |
| US3705951A (en) | Spark plug sealing gasket | |
| US1969132A (en) | Terminal for electric heating appliances | |
| US1990783A (en) | Electrical make-and-break contactor and method of mounting points thereof | |
| CN110140265B (en) | Spark plug electrode, spark plug and method for producing a spark plug electrode | |
| US1957111A (en) | Bearing |