US3881245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting electrical components on thick film printed circuit elements
Assignee: Northrop Grumman Properties Ltd
•
Filing: 1974-02-26
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Granted: 1975-05-06
•
Expires: 1994-02-26
Abstract
Abstract A method of mounting, on a thick film printed circuit, a component having metallised ends, includes welding strips of metal foil to appropriate conductive areas of the circuit, placing the component with its metallised ends overlaying the strips, wrapping the strips around the metallised ends and welding the strips in place on the ends. The component may additionally be adhesively secured to the circuit and may be encapsulated after being mounted.
Inventors
- 👤 Jeffrey Leoman Dudley
- 👤 John Christopher Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:29
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/328; H05K3/40; H05K3/4007; H05K3/4015; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; H05K1/09; H05K1/092; H05K2201/00; H05K2201/10; H05K2201/10613; H05K2201/10621; H05K2201/10636; H05K2201/10719; H05K2201/10954; H05K2201/10962; Y; Y02; Y02P; Y02P70/00; Y02P70/50; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49144
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
67 words
A method of mounting, on thick film printed circuit elements, components having metallised contact areas, comprising welding a strip of metal foil to a conductive area of the circuit element, placing the component so that a metallised area of said component overlays the welded portion of said strip, wrapping the ends of the strip around the component and welding them to said metallised area on the component.
Claim 2
Independent Claim
67 words
A method of mounting, on thick film printed circuit elements, components having metallised contact areas, comprising welding a strip of metal foil to a conductive area of the circuit element, placing the component so that a metallised area of said component overlays the welded portion of said strip, wrapping the ends of the strip around the component and welding them to said metallised area on the component.
Claim 3
Dependent Claim
16 words
A method as claimed in claim 1 in which said strip is formed of gold foil.
Claim 4
Dependent Claim
32 words
A method as claimed in claim 1 in which a plurality of said strips are welded to respective conductive areas of said circuit element and to respective metallised areas of the component.
Claim 5
Dependent Claim
15 words
A method as claimed in claim 1 in which said welding is electrical resistance welding.
Claim 6
Dependent Claim
14 words
A method as claimed in claim 4 in which said welding is parallel-gap welding.
Claim 7
Dependent Claim
34 words
A method as claimed in claim 1 which includes the step of applying a layer of epoxy resin adhesive to that side of the component which is to be placed adjacent the conductive area.
Claim 8
Dependent Claim
25 words
A method as claimed in claim 1 which includes the step of encapsulating the component after the latter has been secured to the circuit element.
Claim 9
Dependent Claim
16 words
A method as claimed in claim 7 in which the component is encapsulated in silicone rubber.
Claim 10
Dependent Claim
22 words
A method as claimed in claim 8 in which the component is surrounded by a cap filled with a synthetic resin adhesive.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |