Patent US3723697A successfully refreshed from Google Patents.
US3723697A
Expired / Lapsed
US
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Infra-red soldering apparatus incorporating pressure applying structure-thereto
Assignee: Plessey Handel und Investments AG
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Filing: 1971-11-18
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Granted: 1973-03-27
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Expires: 1991-11-18
Abstract
Abstract To ensure good pressure distribution to the individual conductor pairs to be solder-joined when effecting infrared-light soldering of a set of conductors on a flexible infrared-pervious substrate to a second set of conductors on a second substrate, a strip-type focussed infra-red source is equipped with a pressure pad which is pivotally supported by trunnions resting on pressure application spring bars, and which consist of a quartz bar fitted at its pressure-transmission face with a pressure-distribution pad made of SYLGARD 182 silicone resin, a material which has a high infra-red transmission combined with good resilience and temperature resistance.
Inventors
- 👤 F King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:43
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/005; B23K1/0053
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
31 words
Apparatus as claimed in claim 1, wherein the pressure pad additionally includes a pair of cheek plates, one at each side of said plane, and each carrying one of said trunnions.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |