US3945556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Functional alloy for use in automated soldering processes
Assignee: Alpha Assembly Solutions Inc
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Filing: 1975-02-25
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Granted: 1976-03-23
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Expires: 1995-02-25
Abstract
Abstract A solder alloy for use in automated soldering of workpieces by application thereto of liquid solder from a molten reservoir. The alloy consists essentially of from about 50 to 57.5% by weight tin, from about 1.5 to 4% by weight antimony, with the balance being substantially lead. The alloy is preferably further characterized in displaying a solidus-to-liquidus temperature range no greater than that of a 60/40 weight ratio tin/lead solder.
Inventors
- 👤 Howard H. Manko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:04
CPC Classifications
C; C22; C22C; C22C13/00; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; B23K35/262
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
In the process of machine soldering a workpiece by application thereto of liquid solder from a molten reservoir; the improvement wherein: said solder is an alloy consisting essentially of from about 50 to 57.5% by weight tin, from about 1.5 to 4% by weight antimony, and the balance being substantially lead.
Claim 2
Dependent Claim
51 words
In the process of machine soldering a workpiece by application thereto of liquid solder from a molten reservoir; the improvement wherein: said solder is an alloy consisting essentially of from about 50 to 57.5% by weight tin, from about 1.5 to 4% by weight antimony, and the balance being substantially lead.
Claim 3
Dependent Claim
39 words
A process in accordance with claim 1, wherein the compositional range of said alloy is such as to further characterize said alloy as displaying a solidus-to-liquidus temperature range no greater than that of a 60/40 weight ratio tin/lead solder.
Claim 4
Dependent Claim
35 words
A process in accordance with claim 1, wherein said alloy consists essentially of from about 51 to 54% by weight tin, from about 2 to 3.5% by weight antimony, and the balanace being substantially lead.
Claim 5
Dependent Claim
23 words
A process in accordance with claim 1, wherein said alloy by weight consists essentially of approximately 55% tin, 2.55% antimony, and 42.23% lead.
Claim 6
Dependent Claim
23 words
A process in accordance with claim 1, wherein said alloy by weight consists essentially of approximately 52% tin, 3% antimony, and 45% lead.
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) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |