US4045867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for encapsulating electrical components
Assignee: RIFA SWEDEN BOX 945 S-391 29 KALMAR SWEDEN AB
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Filing: 1975-08-13
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Granted: 1977-09-06
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Expires: 1995-08-13
Abstract
Abstract In a method for encapsulating electrical components, especially capacitors, plastic moulds joined to a common trough-shaped pouring ingate are used. A liquid, hardenable plastics filling compound is poured into the moulds in excess under vacuum, and the plastics compound is brought to cure. After curing, the pouring ingate together with the surplus filling compound is cut off from the encapsulated components. The mould remains as a cover around the component.
Inventors
- 👤 Arne Gudmund Strom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:24
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/224; H01G13/00; H01G13/003; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169; Y10T29/49171; Y10T29/49172
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
226 words
A method for encapsulating electrical components in capsules filled with a hardenable plastics material, said capsules being part of a mould having a trough-shaped pouring ingate mounted above and in fluid communication with the entrances of said capsules, said capsules being provided with holes in their bottom portions and being spaced from one another along said trough-shaped pouring ingate, each of said electrical components to be provided with a first electrical connection wire connected to a first terminal of said electrical component, and a second electrical connection wire connected to a second terminal of said electrical component, said method comprising: the steps of inserting said electrical components into said capsules such that the connection wires pass through the holes provided in the bottoms of the capsules, one electrical component for each of said capsules; pouring a liquid hardenable plastics material into said trough-shaped pouring ingate, said step of pouring comprising pouring a surplus amount of said liquid hardenable plastics material so that an excess amount of said material remains in said trough-shaped pouring ingate after all of said capsules have been filled, and pouring said material into said trough-shaped pouring ingate under vacuum; curing said liquid hardenable plastics material; and separating said trough-shaped pouring ingate along with the excess hardened plastics material from said thus-formed encapsulated components such that a plurality of individual encapsulated components results.
Claim 2
Independent Claim
226 words
A method for encapsulating electrical components in capsules filled with a hardenable plastics material, said capsules being part of a mould having a trough-shaped pouring ingate mounted above and in fluid communication with the entrances of said capsules, said capsules being provided with holes in their bottom portions and being spaced from one another along said trough-shaped pouring ingate, each of said electrical components to be provided with a first electrical connection wire connected to a first terminal of said electrical component, and a second electrical connection wire connected to a second terminal of said electrical component, said method comprising: the steps of inserting said electrical components into said capsules such that the connection wires pass through the holes provided in the bottoms of the capsules, one electrical component for each of said capsules; pouring a liquid hardenable plastics material into said trough-shaped pouring ingate, said step of pouring comprising pouring a surplus amount of said liquid hardenable plastics material so that an excess amount of said material remains in said trough-shaped pouring ingate after all of said capsules have been filled, and pouring said material into said trough-shaped pouring ingate under vacuum; curing said liquid hardenable plastics material; and separating said trough-shaped pouring ingate along with the excess hardened plastics material from said thus-formed encapsulated components such that a plurality of individual encapsulated components results.
Claim 3
Dependent Claim
148 words
The method according to claim 1, wherein said step of inserting said electrical components into said capsules comprises inserting said first and second connection wires for each electrical component, prior to connection to said electircal component, through a first hole and a second hole in the bottom surface of a respective capsule, pushing said first and second connection wires through said holes until said connection wires are positioned above the top surface of said trough-shaped pouring ingate, bending the ends of said first and second connection wires positioned above said top surface of said trough-shaped pouring ingate, connecting said thus-bent ends of said first and second connection wires to said first and second terminals of the corresponding electrical component, and pulling said thus-connected first and second connection wires back through said first and second holes until said electrical component is in the proper position in its respective capsule.
Claim 4
Dependent Claim
49 words
The method according to claim 2, wherein said step of inserting said electrical components into said capsules further comprises cutting said first and second connection wires to a desired length after said step of pulling said thus-connected first and second connection wires back through said first and second holes.
Claim 5
Dependent Claim
42 words
The method according to claim 2, wherein said step of inserting said first and second connection wires into said respective capsules comprises advancing said connection wires from respective reels of connection wire positioned below said first and second holes of each capsule.
Claim 6
Dependent Claim
40 words
The method according to claim 4, wherein said step of separating said trough-shaped pouring ingate along with said excess material comprises cutting said trough-shaped pouring ingate along with said excess material from the top portions of said thus-formed encapsulated components.
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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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |