Patent US3672046A successfully refreshed from Google Patents.
US3672046A
Expired / Lapsed
US
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The method of making an electrical component
Assignee: Pulse Electronics Corp
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Filing: 1970-01-14
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Granted: 1972-06-27
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Expires: 1990-01-14
Abstract
Abstract The method comprises forming a lead frame having a plurality of sets of leads and connecting at least one electrical element to each set of leads. The elements are preencapsulated with a pressure-distributing material which is substantially free of gases. The preencapsulated elements are then encapsulated and the respective elements and their associated leads are separated to provide the electrical components. The invention further includes the electrical component per se.
Inventors
- 👤 William T Storey
- 👤 Robert F Procter
- 👤 Charles H A Snyder
- 👤 George M Jacob
- 👤 Raymond T Mooney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:27
CPC Classifications
H; H01; H01F; H01F19/00; H01F19/04; H01F19/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49121
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
74 words
A method of fabricating electrical components comprising forming a lead frame having a plurality of spaced sets of leads, connecting at least one electrical element to selected sets of leads, preencapsulating said elements to surround the element associated with each set of leads with a continuous material which is substantially free of gas and which substantially evenly distributes pressures applied, encapsulating said preencapsulated elements, and separating said encapsulated elements to provide said electrical components.
Claim 2
Independent Claim
74 words
A method of fabricating electrical components comprising forming a lead frame having a plurality of spaced sets of leads, connecting at least one electrical element to selected sets of leads, preencapsulating said elements to surround the element associated with each set of leads with a continuous material which is substantially free of gas and which substantially evenly distributes pressures applied, encapsulating said preencapsulated elements, and separating said encapsulated elements to provide said electrical components.
Claim 3
Dependent Claim
27 words
The method of Claim 1, in which said preencapsulating step comprises coating said elements with a preencapsulating liquid, and curing said liquid to provide said preencapsulated elements.
Claim 4
Dependent Claim
21 words
The method of claim 2, including the step of degassing said preencapsulating liquid prior to coating said elements with said liquid.
Claim 5
Dependent Claim
50 words
The method of claim 3, further comprising the steps of placing said lead frame with said connected electrical elements in a mold, introducing said preencapsulating liquid into said mold to coat said elements, and curing said preencapsulating liquid by heating said mold to a preselected temperature, and cooling said mold.
Claim 6
Dependent Claim
23 words
The method of claim 4, including the step of preheating said mold to a predetermined temperature prior to introducing said preencapsulating liquid therein.
Claim 7
Dependent Claim
23 words
The method of claim 1, in which said elements are connected to said plurality of selected sets of leads by respective resistance welds.
Claim 8
Dependent Claim
61 words
The method of claim 1 in which said lead frame is formed with tie bars interconnecting said leads and a lead mounting portion, and including the further step of removing said tie bars and lead mounting portion from each of said electrical components, and bending the leads of each component, and bending the leads of each component at a preselected angle.
Claim 9
Dependent Claim
16 words
The method of claim 1, in which said elements are encapsulated by transfer molding the same.
Claim 10
Dependent Claim
35 words
An electrical component comprising a plurality of leads, an electrical element connected to said plurality of leads, a pressure-distributing material surrounding said element, and a casing surrounding said pressure-distributing material having said element embedded therein.
Claim 11
Dependent Claim
35 words
An electrical component comprising a plurality of leads, an electrical element connected to said plurality of leads, a pressure-distributing material surrounding said element, and a casing surrounding said pressure-distributing material having said element embedded therein.
Claim 12
Dependent Claim
17 words
An electrical component as in claim 9, in which said pressure-distributing material comprises a polyurethane elastomeric material.
Claim 13
Dependent Claim
15 words
An electrical component as in claim 9, in which said casing comprises a thermoplastic material.
Claim 14
Dependent Claim
15 words
An electrical component as in claim 9, in which said casing comprises a thermosetting material.
References Cited (Backward Citations)
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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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |