Patent US4805893A successfully refreshed from Google Patents.
Patent US4804805A successfully refreshed from Google Patents.
US4804805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protected solder connection and method
Assignee: Therm O Disc Inc
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Filing: 1987-12-21
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Granted: 1989-02-14
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Expires: 2007-12-21
Abstract
Abstract Solder in a connection is kept from melting when applying an outer protective layer of high melting point plastic by first applying an inner layer of low melting point plastic.
Inventors
- 👤 Adamantios Antonas
- 👤 Kenneth C. Day
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:13
CPC Classifications
H; H01; H01C; H01C1/00; H01C1/02; H01C1/032; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49146; Y10T29/49169; Y10T29/49171; Y10T29/49172
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
65 words
An electrical device including components connected together by solder having a solder melting temperature range, said device being encapsulated in plastic material including inner and outer layers, said inner layer having an inner layer melting temperature range substantially less than said solder melting temperature range, and said outer layer having an outer layer melting temperature range substantially greater than said inner layer melting temperature range.
Claim 2
Dependent Claim
65 words
An electrical device including components connected together by solder having a solder melting temperature range, said device being encapsulated in plastic material including inner and outer layers, said inner layer having an inner layer melting temperature range substantially less than said solder melting temperature range, and said outer layer having an outer layer melting temperature range substantially greater than said inner layer melting temperature range.
Claim 3
Dependent Claim
20 words
The device of claim 1 wherein said outer layer melting temperature range at least approaches said solder melting temperature range.
Claim 4
Dependent Claim
17 words
The device of claim 1 wherein said outer layer has a greater thickness than said inner layer.
Claim 5
Dependent Claim
26 words
The device of claim 1 wherein said outer layer is of a material having a substantially greater physical strength and chemical resistance than said inner layer.
Claim 6
Dependent Claim
16 words
The device of claim 1 wherein said inner layer comprises fused powder particles of plastic material.
Claim 7
Dependent Claim
15 words
The device of claim 1 wherein said outer layer is molded over said inner layer.
Claim 8
Dependent Claim
15 words
The device of claim 1 wherein said device comprises a thermistor having leads soldered thereto.
Claim 9
Dependent Claim
16 words
The device of claim 1 wherein said inner layer has a thickness of approximately 10-20 thousandths.
Claim 10
Dependent Claim
23 words
The device of claim 1 wherein said outer layer melting temperature range is at least as great as said solder melting temperature range.
Claim 11
Dependent Claim
20 words
The device of claim 1 wherein said outer layer melting temperature range is greater than said solder melting temperature range.
Claim 12
Dependent Claim
60 words
A soldered electrical connection including solder having a solder melting temperature range, plastic material enclosing said connection and including inner and outer layers, said inner layer having an inner layer melting temperature range lower than said solder melting temperature range, and said outer layer having an outer layer melting temperature range that is greater than said solder melting temperature range.
Claim 13
Dependent Claim
60 words
A soldered electrical connection including solder having a solder melting temperature range, plastic material enclosing said connection and including inner and outer layers, said inner layer having an inner layer melting temperature range lower than said solder melting temperature range, and said outer layer having an outer layer melting temperature range that is greater than said solder melting temperature range.
Claim 14
Dependent Claim
21 words
The connection of claim 11 wherein said inner layer has a thickness substantially less than the thickness of said outer layer.
Claim 15
Dependent Claim
16 words
The connection of claim 11 wherein both said inner and outer layers are of thermoplastic material.
Claim 16
Dependent Claim
18 words
The connection of claim 11 wherein said inner layer comprises particles of plastic powder fused to said connection.
Claim 17
Dependent Claim
28 words
The connection of claim 11 wherein said outer layer is of a material having substantially greater physical strength and chemical resistance than the material of said inner layer.
Claim 18
Independent Claim
71 words
A method of protecting a soldered connection containing solder having a solder melting temperature range comprising the steps of applying to said connection an inner layer of plastic material having an inner layer melting temperature range lower than said solder melting temperature range, and applying over said inner layer an outer layer of plastic material having an outer layer melting temperature range substantially greater than said inner layer melting temperature range.
Claim 19
Independent Claim
71 words
A method of protecting a soldered connection containing solder having a solder melting temperature range comprising the steps of applying to said connection an inner layer of plastic material having an inner layer melting temperature range lower than said solder melting temperature range, and applying over said inner layer an outer layer of plastic material having an outer layer melting temperature range substantially greater than said inner layer melting temperature range.
Claim 20
Dependent Claim
32 words
The method of claim 16 including the step of heating said connection at least approximately to said inner layer melting temperature range prior to applying said inner layer of plastic material thereto.
Claim 21
Dependent Claim
29 words
The method of claim 17 wherein said inner layer of plastic material is applied to said connection by passing said connection through a fluidized bed of powdered plastic material.
Claim 22
Dependent Claim
16 words
The method of claim 18 wherein said outer layer is injection molded onto said inner layer.
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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) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |