Patent US3859491A successfully refreshed from Google Patents.
US3859491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact assembly and method of manufacture of having silver-cadmium oxide contacts affixed to a brass carrier
Assignee: General Electric Co
•
Filing: 1973-08-31
•
Granted: 1975-01-07
•
Expires: 1993-08-31
Abstract
Abstract Silver-cadmium oxide contacts affixed to a brass carrier. The brass carrier has a layer of copper electroplated thereon. Each of a pair of silver-cadmium oxide contact buttons are axially aligned with the copper layer and positioned adjacent opposite ends of one surface of the brass carrier. The contact buttons are then welded to the brass carrier.
Inventors
- 👤 Laurence Eric Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:17
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/18; B23K35/00; B23K35/001; B23K35/007; H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0231; H01H1/0237; H01H1/02372; H01H1/02374
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
35 words
A COMPOSITE CONTACT ASSEMBLY FABRICATED BY MEANS OF ELECTRICAL RESISTANCE WELDING, COMPRISING: A. A SUPPORT INCLUDING A BRASS CONTACT CARRIER AND A COPPER LAYER EXTENDING OVER SUBSTANTIALLY THE TOTAL SURFACE AREA OF SAID CARRIER; AND
Claim 2
Dependent Claim
35 words
A COMPOSITE CONTACT ASSEMBLY FABRICATED BY MEANS OF ELECTRICAL RESISTANCE WELDING, COMPRISING: A. A SUPPORT INCLUDING A BRASS CONTACT CARRIER AND A COPPER LAYER EXTENDING OVER SUBSTANTIALLY THE TOTAL SURFACE AREA OF SAID CARRIER; AND
Claim 3
Dependent Claim
25 words
A contact assembly according to claim 1 wherein said copper layer and said silver-cadmium oxide contact are positioned adjacent one end of said contact carrier.
Claim 4
Dependent Claim
25 words
A contact assEsmbly according to claim 1 further comprising another silver-cadmium oxide contact attached to said support and in axial alignment with said copper layer.
Claim 5
Dependent Claim
37 words
A contact assembly according to claim 3 wherein said silver-cadmium oxide contacts are in the form of circular buttons, each contact having a flat bottom surface and a central protruding portion depending from said flat bottom surface.
Claim 6
Dependent Claim
24 words
A contact assembly according to claim 4 wherein said central protruding portion of each of said contact buttons is physically connected to said carrier.
Claim 7
Independent Claim
111 words
A method of manufacturing a contact assembly comprising the steps of: a. depositing a layer of copper on at least a portion of a surface of a brass contact carrier to form a contact support; b. placing a silver-cadmium oxide contact in engagement with a first electrical resistance welding electrode; c. positioning said support onto said contact; d. placing a second electrical resistance welding electrode in engagement with said copper layer and in axial alignment with said contact and said first welding electrode; and e. simultaneously applying welding pressure to and current through said electrodes, said contact, said carrier and said copper layer to weld said contact directly to said support.
Claim 8
Independent Claim
111 words
A method of manufacturing a contact assembly comprising the steps of: a. depositing a layer of copper on at least a portion of a surface of a brass contact carrier to form a contact support; b. placing a silver-cadmium oxide contact in engagement with a first electrical resistance welding electrode; c. positioning said support onto said contact; d. placing a second electrical resistance welding electrode in engagement with said copper layer and in axial alignment with said contact and said first welding electrode; and e. simultaneously applying welding pressure to and current through said electrodes, said contact, said carrier and said copper layer to weld said contact directly to said support.
Claim 9
Dependent Claim
22 words
A method according to claim 6 wherein said copper layer is electroplated onto substantially the total surface area of said brass carrier.
Claim 10
Dependent Claim
21 words
A method according to claim 7 further comprising the step of welding a plurality of silver-cadmium oxide contacts to said support.
Claim 11
Independent Claim
63 words
A method of manufacturing a contact assembly comprising the steps of: a. depositing a copper layer onto substantially the total surface area of a brass contact carrier to form a support; b. positioning a silver-cadmium oxide contact member to engage said support and to be in axial alignment with said copper layer; and c. electrical resistance welding said member directly to said support.
Claim 12
Independent Claim
63 words
A method of manufacturing a contact assembly comprising the steps of: a. depositing a copper layer onto substantially the total surface area of a brass contact carrier to form a support; b. positioning a silver-cadmium oxide contact member to engage said support and to be in axial alignment with said copper layer; and c. electrical resistance welding said member directly to said support.
References Cited (Backward Citations)
US3226517A
Cited
US3571546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |