Patent US3178093A successfully refreshed from Google Patents.
US3875652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding metals together
Assignee: RCA Corp
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Filing: 1973-08-08
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Granted: 1975-04-08
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Expires: 1993-08-08
Abstract
Abstract A wire of a soft metal, such as gold, silver, or copper, can be ultrasonically bonded to a base metal substrate by coating the wire with a thin layer of an alloy of nickel-phosphorus, coating the substrate with a relatively thicker layer of an alloy of cobalt-phosphorus, and applying ultrasonic vibratory energy between the coated wire and the coated substrate. A portion of the thin layer of the nickel-phosphorus is worn away during the application of the ultrasonic vibratory energy, and the wire is bonded directly to the relatively thicker layer of cobaltphosphorus.
Inventors
- 👤 Anthony Francis Arnold
- 👤 Anthony Zbigniew Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:15
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/001; B23K35/007; B23K20/00; B23K20/10; H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/328
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
111 words
A METHOD OF BONDING A FIRST METAL BODY SELECTED FROM THE GROUP CONSISTING OF GOLD, SILVER, COPPER, AND ALLOYS THEREOF TO A SECOND METAL BODY COMPRISING THE STEPS OF: APPLYING A THIN LAYER OF AN ALLOY SELECTED FROM THE GROUP CONSISTING OF NICKEL-PHOSPHORUS, COBALT-PHOSPHORUS, AND MIXTURES THEREOF ON SAID FIRST METAL BODY, APPLYING A RELATIVELY THICKER LAYER OF AN ALLOY SELECTED FROM THE GROUP CONSISTING OF COBALT-PHOSPHORUS, NICKELPHOSPHORUS, AND MIXTURES THEREOF ON SAID SECOND METAL BODY, PLACING SAID LAYERS OF SAID FIRST AND SAID SEOND METAL BODIES TOGETHER, AND APPLYING ELESTIC VIBRATORY ENERGY BETWEEN SAID BODIES UNTIL SAID FIRST METAL BODY IS BONDED TO THE LAYER ON SAID SECOND METAL BODY.
Claim 2
Independent Claim
111 words
A METHOD OF BONDING A FIRST METAL BODY SELECTED FROM THE GROUP CONSISTING OF GOLD, SILVER, COPPER, AND ALLOYS THEREOF TO A SECOND METAL BODY COMPRISING THE STEPS OF: APPLYING A THIN LAYER OF AN ALLOY SELECTED FROM THE GROUP CONSISTING OF NICKEL-PHOSPHORUS, COBALT-PHOSPHORUS, AND MIXTURES THEREOF ON SAID FIRST METAL BODY, APPLYING A RELATIVELY THICKER LAYER OF AN ALLOY SELECTED FROM THE GROUP CONSISTING OF COBALT-PHOSPHORUS, NICKELPHOSPHORUS, AND MIXTURES THEREOF ON SAID SECOND METAL BODY, PLACING SAID LAYERS OF SAID FIRST AND SAID SEOND METAL BODIES TOGETHER, AND APPLYING ELESTIC VIBRATORY ENERGY BETWEEN SAID BODIES UNTIL SAID FIRST METAL BODY IS BONDED TO THE LAYER ON SAID SECOND METAL BODY.
Claim 3
Dependent Claim
32 words
A method in accordance with claim 1 nickel-phosphorus the layer on said first metal body is a nickel- phosphorus alloy and the layer on said second metal body is a cobalt-phosphorus alloy.
Claim 4
Dependent Claim
37 words
A method in accordance with claim 2 wherein: the layer of said first metal body is between 200A and 3,000A, and the layer on said second metal body is relatively thicker than that on said first body.
Claim 5
Dependent Claim
33 words
A method in accordance with claim 1 wherein: said nickel-phosphorus alloy comprises between 1 and 30%, by weight, of phosphorus, and said cobalt-phosphorus alloy comprises between 1 and 30%, by weight, of phosphorus.
Claim 6
Dependent Claim
37 words
A method in accordance with claim 1 wherein: said first metal body comprises gold and said layer thereon comprises nickel-phosphorus, and said second metal body comprises a base metal and said layer thereon comprises a cobalt-phosphorus alloy.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |